This page has only limited features, please log in for full access.

Unclaimed
Jobst Wurl
Departamento Académico de Ciencias Marinas y Costeras, Universidad Autónoma de Baja California Sur, UABCS, Carretera al Sur km 5.5, La Paz 23080, Mexico

Honors and Awards

The user has no records in this section


Career Timeline

The user has no records in this section.


Short Biography

The user biography is not available.
Following
Followers
Co Authors
The list of users this user is following is empty.
Following: 0 users

Feed

Journal article
Published: 04 March 2021 in Resources
Reads 0
Downloads 0

Geo-thermalism has been widely recognized on the Baja California Peninsula, especially during the last decade. The current research, carried out on Bahia Concepcion, evidences the existence of geothermal springs, which get recharged mainly by groundwater and seawater. The groundwater can be characterized as Na+-Cl− and Na+-HCO3 − type, with a pH value close to neutrality. The slightly more acidic thermal sites presented temperatures between 32 °C and 59 °C at the surface. Based on the relationships of the Cl− and Br−, as well as the B/Cl−, and Br−/Cl− ratios, seawater was recognized as the main source of salinity. The spatial distribution is explained directly through marine intrusion, or via sprays and aerosols within the rainwater. Seawater ratios in thermal springs varied from 62% to 83%, corresponding mainly to shallow inflow, but seawater inputs into the deep thermal reservoir were also recognized. Temperatures in the geothermal deep reservoir were inferred from 114 to 209 °C, calculated through the SiO2 and Na+-K+ geothermometers. In addition to previously reported thermal sites at Bahía Concepción, and based on their elevated temperatures, two new sites were identified. Another five springs do not fulfill the commonly used definition, based on differential temperature, but show the typical hydrogeochemical signature of thermal water. A new approach to identify this low-temperature geothermal-influenced spring water by its hydrogeochemical composition is presented, for which the term “Masked Geothermal Waters” (MGW) is introduced. Our findings increase the area of the geothermal anomaly and, therefore, the potential of geothermal resources. The approach proposed in this research will also be useful to identify more MGW in other coastal areas.

ACS Style

Pablo Hernández-Morales; Jobst Wurl; Carlos Green-Ruiz; Diego Morata. Hydrogeochemical Characterization as a Tool to Recognize “Masked Geothermal Waters” in Bahía Concepción, Mexico. Resources 2021, 10, 23 .

AMA Style

Pablo Hernández-Morales, Jobst Wurl, Carlos Green-Ruiz, Diego Morata. Hydrogeochemical Characterization as a Tool to Recognize “Masked Geothermal Waters” in Bahía Concepción, Mexico. Resources. 2021; 10 (3):23.

Chicago/Turabian Style

Pablo Hernández-Morales; Jobst Wurl; Carlos Green-Ruiz; Diego Morata. 2021. "Hydrogeochemical Characterization as a Tool to Recognize “Masked Geothermal Waters” in Bahía Concepción, Mexico." Resources 10, no. 3: 23.

Journal article
Published: 22 April 2020 in Groundwater for Sustainable Development
Reads 0
Downloads 0

Oases are complex ecosystems, with permanent water bodies, springs, and vegetated areas, which are located in areas where the frequency of rain is a critical factor for the maintenance and subsistence of flora and fauna. These ecosystems have been of great importance providing resources for the settlement of human societies. In addition to the natural stress to which they are confronted, oases are facing pressures related to coastal development and climate change. New research is necessary to understand the effects of these pressures, to define strategies to promote mitigation measures to limit their deterioration. In this paper, we proposed a multi-criteria methodology to define and quantify recent and future pressures to an oasis affected by climate change and coastal development and the definition of priority areas for the installation of mitigation and adaptation measures This methodology was applied to Todos Santos oasis, one of the most important wetlands in Baja California Sur state, which has been affected in recent years by coastal development. The results indicate that the integration of MODFLOW models, CCRP index, chemistry data, and geospatial analysis provides effective tools to generate information on the possible future of oases, contributing greatly to land planning, nature conservation and sustainable management of these ecosystems.

ACS Style

Miguel Angel Imaz-Lamadrid; Jobst Wurl; Oscar Arizpe-Covarrubias; Eleonora Romero-Vadillo. Deterioration of oases subject to climate change and coastal development: The case of Todos Santos Oasis, Baja California Sur, Mexico. Groundwater for Sustainable Development 2020, 11, 100401 .

AMA Style

Miguel Angel Imaz-Lamadrid, Jobst Wurl, Oscar Arizpe-Covarrubias, Eleonora Romero-Vadillo. Deterioration of oases subject to climate change and coastal development: The case of Todos Santos Oasis, Baja California Sur, Mexico. Groundwater for Sustainable Development. 2020; 11 ():100401.

Chicago/Turabian Style

Miguel Angel Imaz-Lamadrid; Jobst Wurl; Oscar Arizpe-Covarrubias; Eleonora Romero-Vadillo. 2020. "Deterioration of oases subject to climate change and coastal development: The case of Todos Santos Oasis, Baja California Sur, Mexico." Groundwater for Sustainable Development 11, no. : 100401.

Original article
Published: 02 December 2019 in Environmental Earth Sciences
Reads 0
Downloads 0

The golf courses present major areas of grass that need high volumes of water for maintenance. In regions with arid climate, elevated water losses by evapotranspiration contrast with low rainfall. In the urban-touristic area of Los Cabos, 13 golf courses have been built in a distance of 40 km along the coast. This benefits private developers but golf courses provoke various environmental and social problems, including habitat loss, pollution of soils and aquifers, among others. Because the golf courses do not report their water demand, the annual water consumption was analyzed by indirect methods, using satellite imagery and geographic information systems. The obtained annual water demand of the 13 golf fields is 7.09 million m3, which is more than the whole water volume used for agriculture in this area. The findings suggest that the water consumption should be taken into account as an important environmental impact before the realization of new golf courses in Mexico.

ACS Style

Jobst Wurl. Competition for water: consumption of golf courses in the tourist corridor of Los Cabos, BCS, Mexico. Environmental Earth Sciences 2019, 78, 674 .

AMA Style

Jobst Wurl. Competition for water: consumption of golf courses in the tourist corridor of Los Cabos, BCS, Mexico. Environmental Earth Sciences. 2019; 78 (24):674.

Chicago/Turabian Style

Jobst Wurl. 2019. "Competition for water: consumption of golf courses in the tourist corridor of Los Cabos, BCS, Mexico." Environmental Earth Sciences 78, no. 24: 674.

Journal article
Published: 27 July 2019 in Resources
Reads 0
Downloads 0

Groundwater provides the most important of the water resources used in the maintenance of communities in arid and semi-arid regions. In these areas, the usage of deep wells with motorized pumps in combination with the lack of effective regulatory policies and high human population growth (increase the water demand) impact the quality of the groundwater. This is especially the case for the San José del Cabo aquifer, in Baja California Sur. In the present study the groundwater flow system is analyzed in order to recognize the impact from variations in groundwater extraction and recharge on the phreatic levels and discharge values. In order to achieve this goal, a groundwater model was generated using the MODFLOW program. Different scenarios of extraction and recharge were calculated, based on different estimations of population growth. All the scenarios result in decreasing groundwater levels. As an important result, a relationship between the phreatic level and the extraction volume was found for the middle zone of the aquifer, where an average annual decrease of 0.5 m was observed from every 5 × 106 m3 additional extraction volume. This zone is up to three times more susceptible to changes in extraction values than the southern zone. As the results show, the San José del Cabo aquifer is in a fragile state where an increment in extraction is not an option without the use of remediation technics or new sources for water supply.

ACS Style

Javier Alexis Trasviña-Carrillo; Jobst Wurl; Miguel Angel Imaz-Lamadrid. Groundwater Flow Model and Statistical Comparisons Used in Sustainability of Aquifers in Arid Regions. Resources 2019, 8, 134 .

AMA Style

Javier Alexis Trasviña-Carrillo, Jobst Wurl, Miguel Angel Imaz-Lamadrid. Groundwater Flow Model and Statistical Comparisons Used in Sustainability of Aquifers in Arid Regions. Resources. 2019; 8 (3):134.

Chicago/Turabian Style

Javier Alexis Trasviña-Carrillo; Jobst Wurl; Miguel Angel Imaz-Lamadrid. 2019. "Groundwater Flow Model and Statistical Comparisons Used in Sustainability of Aquifers in Arid Regions." Resources 8, no. 3: 134.

Journal article
Published: 25 March 2019 in Resources
Reads 0
Downloads 0

In arid and semiarid zones, groundwater plays a key role in the ecology and availability of freshwater. Coastal lagoons in arid zones have great importance as a refuge for species of flora and fauna, as a source of freshwater, and for recreational purposes for local communities and tourism. In addition, as environments under natural stress, they are suffering pressure from anthropogenic activities and climate change, especially in zones with intense touristic development as in the case of the Baja California Peninsula in northwest Mexico. In this paper, we analyze the future of a coastal lagoon impacted by climate change and anthropogenic pressures. We constructed a groundwater MODFLOW-SWI2 model to predict changes in freshwater–saltwater inputs and correlated them with the geospatial analysis of the distribution and evolution of the water body and surrounding vegetation. The methodology was applied to the San Jose lagoon, one of the most important wetlands in the Baja California peninsula, which had been affected by anthropogenic activities and endangered by climate change. According to our water balance, the deficit of the San Jose aquifer will increase by 2040 as a result of climate change. The water table north of the lagoon will drop, affecting the amount of freshwater inflow. This reduction, together with an increase of evapotranspiration and the sea-level rise, will favor an increase of mineralization, reducing the surface water and groundwater quality and in consequence affecting the vegetation cover. Without proper management and adequate measures to mitigate these impacts, the lagoon may disappear as a freshwater ecosystem. Results of this research indicate that the use of a groundwater flow model, together with a geospatial analysis provide effective tools to predict scenarios for the future of coastal lagoons, and serve as a basis for land planning, nature conservation, and sustainable management of these ecosystems.

ACS Style

Miguel Angel Imaz-Lamadrid; Jobst Wurl; Ernesto Ramos-Velázquez. Future of Coastal Lagoons in Arid Zones under Climate Change and Anthropogenic Pressure. A Case Study from San Jose Lagoon, Mexico. Resources 2019, 8, 57 .

AMA Style

Miguel Angel Imaz-Lamadrid, Jobst Wurl, Ernesto Ramos-Velázquez. Future of Coastal Lagoons in Arid Zones under Climate Change and Anthropogenic Pressure. A Case Study from San Jose Lagoon, Mexico. Resources. 2019; 8 (1):57.

Chicago/Turabian Style

Miguel Angel Imaz-Lamadrid; Jobst Wurl; Ernesto Ramos-Velázquez. 2019. "Future of Coastal Lagoons in Arid Zones under Climate Change and Anthropogenic Pressure. A Case Study from San Jose Lagoon, Mexico." Resources 8, no. 1: 57.

Journal article
Published: 01 February 2019 in Revista Internacional de Contaminación Ambiental
Reads 0
Downloads 0

The El Carrizal hydrological basin is located in the southwest zone of the state of Baja California Sur, Mexico. The El Triunfo-San Antonio mining district, where mine tailings are located with high concentrations of potentially toxic elements (PTEs), is located in the higher part of the basin. The demographic growth of the city of La Paz has pushed to transfer water from this basin, so the aim of this work was to characterize the hydrogeochemical composition of groundwater and to evaluate the water quality for human consumption. In the year 2015, 19 wells in the El Carrizal basin and 11 wells in the basins of La Paz, La Matanza and Santa Inés-La Muela were sampled during the dry (April-May) and rainy (November-December) seasons. The physicochemical parameters were measured in situ, the major ions (Na + , K + , Ca 2+ , Mg 2+ , Cl – , SO 4 2– , HCO 3 – and NO 3 – ) and PTEs (As, Cd) were determined in the laboratory. The results indicated that the types of water are mainly associated with the lithology of the area in the upper part of the El Carrizal basin, and that the type of water that predominates contains Ca 2+ and HCO 3 – . In the study area, 67 % of the wells in the dry season exceeded the concentration limit of As (10 μg/L). A continuous monitoring of these groundwater wells is necessary to support the supply programs for the population. La cuenca hidrológica El Carrizal se ubica al suroeste del estado de Baja California Sur, México. El distrito minero El Triunfo-San Antonio, donde se localizan jales mineros con altas concentraciones de elementos potencialmente tóxicos (EPT), se encuentra en la parte alta de la cuenca. El crecimiento demográfico en la ciudad de La Paz ha ejercido presión para la transferencia de agua de esta cuenca, por lo que el objetivo de este trabajo fue caracterizar la composición hidrogeoquímica del agua subterránea y evaluar su calidad para consumo humano. En 2015, durante las épocas de estiaje (abril-mayo) y lluvias (noviembre-diciembre), se muestrearon 19 pozos de la cuenca El Carrizal y 11 pozos de las cuencas La Paz, La Matanza y Santa Inés-La Muela. Los parámetros físicos y químicos fueron medidos in situ y los iones mayores (Na + , K + , Ca 2+ , Mg 2+ , Cl – , SO 4 2– , HCO 3 – y NO 3 – ) y EPT (As y Cd) se determinaron en el laboratorio. Se encontró que los tipos de agua están asociados principalmente a la litología de la zona en la parte alta de la cuenca El Carrizal, y que el tipo de agua que predomina es bicarbonatada cálcica (Ca 2+ -HCO 3 – ). En el área de estudio el 67 % de los pozos en época de estiaje rebasaron el límite de la concentración de As (10 µg/L). Es necesario establecer un monitoreo continuo de estos pozos de agua subterránea para apoyar los programas de abasto a la población.

ACS Style

Karen Velázquez-Pedroza; Departamento De Oceanología Centro Interdisciplinario De Ciencias Marinas; Janette Magalli Murillo-Jiménez; Ana Judith Marmolejo-Rodríguez; Enrique Hiparco Nava-Sanchez; Pedro Abelardo Morales-Puente; Jobst Wurl; Eliseo Hernández-Pérez; Instituto De Geología Departamento De Geoquímica; Universidad Autónoma De Baja California Sur Departamento Académico De Ciencias De La Tierra. CARACTERIZACIÓN HIDROGEOQUÍMICA EN LA CUENCA HIDROLÓGICA EL CARRIZAL, BAJA CALIFORNIA SUR, MÉXICO. Revista Internacional de Contaminación Ambiental 2019, 35, 47 -64.

AMA Style

Karen Velázquez-Pedroza, Departamento De Oceanología Centro Interdisciplinario De Ciencias Marinas, Janette Magalli Murillo-Jiménez, Ana Judith Marmolejo-Rodríguez, Enrique Hiparco Nava-Sanchez, Pedro Abelardo Morales-Puente, Jobst Wurl, Eliseo Hernández-Pérez, Instituto De Geología Departamento De Geoquímica, Universidad Autónoma De Baja California Sur Departamento Académico De Ciencias De La Tierra. CARACTERIZACIÓN HIDROGEOQUÍMICA EN LA CUENCA HIDROLÓGICA EL CARRIZAL, BAJA CALIFORNIA SUR, MÉXICO. Revista Internacional de Contaminación Ambiental. 2019; 35 (1):47-64.

Chicago/Turabian Style

Karen Velázquez-Pedroza; Departamento De Oceanología Centro Interdisciplinario De Ciencias Marinas; Janette Magalli Murillo-Jiménez; Ana Judith Marmolejo-Rodríguez; Enrique Hiparco Nava-Sanchez; Pedro Abelardo Morales-Puente; Jobst Wurl; Eliseo Hernández-Pérez; Instituto De Geología Departamento De Geoquímica; Universidad Autónoma De Baja California Sur Departamento Académico De Ciencias De La Tierra. 2019. "CARACTERIZACIÓN HIDROGEOQUÍMICA EN LA CUENCA HIDROLÓGICA EL CARRIZAL, BAJA CALIFORNIA SUR, MÉXICO." Revista Internacional de Contaminación Ambiental 35, no. 1: 47-64.

Journal article
Published: 01 April 2018 in Journal of Hydrology
Reads 0
Downloads 0

Mismanagement has caused the overexploitation of one third of the major aquifers in Mexico, mainly due to excessive water extraction for agricultural irrigation. Santo Domingo (Baja California Sur, in northern Mexico, where agriculture absorbs nearly 80% of water) is the only aquifer in the Mexico where, after a period of overexploitation, equality between extraction and recharge rates was achieved, although this has not meant the securement of long-term water availability. This paper offers an analysis of hydrological resilience of a water-limited arid ecosystem under future extraction scenarios and changing climate conditions. A regional groundwater flow model is proposed using MODFLOW software. Then, different indicators were modeled as outcomes of coupled human-water systems to predict water trajectories under different human impacts. The aim was to recognize water insecurity scenarios and define appropriate actions to a more sustainable use of this scarce resource in the region. Thus, although runoff derived from extreme floods may favor infiltration, the involvement of local stakeholders and decision makers to reverse the adverse impacts of current water management and climate change is imperative if water availability and better quality are to be secured.

ACS Style

Jobst Wurl; Alba E. Gámez; Antonina Ivanova; Miguel Angel Imaz Lamadrid; Pablo Hernández-Morales. Socio-hydrological resilience of an arid aquifer system, subject to changing climate and inadequate agricultural management: A case study from the Valley of Santo Domingo, Mexico. Journal of Hydrology 2018, 559, 486 -498.

AMA Style

Jobst Wurl, Alba E. Gámez, Antonina Ivanova, Miguel Angel Imaz Lamadrid, Pablo Hernández-Morales. Socio-hydrological resilience of an arid aquifer system, subject to changing climate and inadequate agricultural management: A case study from the Valley of Santo Domingo, Mexico. Journal of Hydrology. 2018; 559 ():486-498.

Chicago/Turabian Style

Jobst Wurl; Alba E. Gámez; Antonina Ivanova; Miguel Angel Imaz Lamadrid; Pablo Hernández-Morales. 2018. "Socio-hydrological resilience of an arid aquifer system, subject to changing climate and inadequate agricultural management: A case study from the Valley of Santo Domingo, Mexico." Journal of Hydrology 559, no. : 486-498.

Journal article
Published: 02 March 2018 in International Journal of Environmental Research and Public Health
Reads 0
Downloads 0

The mining activity in the San Antonio-El Triunfo district, located in a mountainous region at 60 km southeast of La Paz, occured for more than 250 years and left behind severe contamination of soils and riverbed sediments which led to elevated concentrations of arsenic and other trace elements in the surface- and groundwater of the region. Although the main mining activity ended around 1911, contamination is still beeing distributed, especially from left behind tailings and mine waste piles. The contamination levels in the groundwater have been reported in several studies, but there is little information available on the surface water quality, and especially the temporal variation. In this study, we analyzed the surface water of the La Junta creek, in the southern part of the San Antonio-El Triunfo mining district. The working hypothesis was that by means of a spatial analysis of surface water and shallow groundwater, in combination with the temporal observation of the concentrations in runoff water, the effects of different sources of arsenic (natural geogene anomalies, due to historic mining activity, and hydrothermal related impact) in the La Junta creek can be recognized. This present study revealed that historic mining activity caused a mojor impact of arsenic but less contamination was observed than in the northern part of the district and elevated arsenic concentrations in stream water generally occurred during times of low streamflow.

ACS Style

Jobst Wurl; Miguel Imaz Lamadrid; Lía Mendez-Rodriguez; Baudilio Acosta Vargas. Arsenic Concentration in the Surface Water of a Former Mining Area: The La Junta Creek, Baja California Sur, Mexico. International Journal of Environmental Research and Public Health 2018, 15, 437 .

AMA Style

Jobst Wurl, Miguel Imaz Lamadrid, Lía Mendez-Rodriguez, Baudilio Acosta Vargas. Arsenic Concentration in the Surface Water of a Former Mining Area: The La Junta Creek, Baja California Sur, Mexico. International Journal of Environmental Research and Public Health. 2018; 15 (3):437.

Chicago/Turabian Style

Jobst Wurl; Miguel Imaz Lamadrid; Lía Mendez-Rodriguez; Baudilio Acosta Vargas. 2018. "Arsenic Concentration in the Surface Water of a Former Mining Area: The La Junta Creek, Baja California Sur, Mexico." International Journal of Environmental Research and Public Health 15, no. 3: 437.

Original article
Published: 22 December 2017 in Sustainable Water Resources Management
Reads 0
Downloads 0

The Valley of Santo Domingo represents the most important agricultural region in the state of Baja California Sur. The uncontrolled extraction of groundwater, and especially the over-exploitation of the Santo Domingo aquifer from 1957 on, has caused modifications to the natural flow system and induced a lateral inflow of seawater from the Pacific coast. As a result, the groundwater quality in the Santo Domingo Irrigation District (066) is deteriorating. Seawater intrusion and irrigation return water, combined with the mobilization of deeper groundwater, have been identified as important sources of salinization. Due to a reduction of the permitted extraction volume (to only one-third), an equality between discharge and recharge volume was achieved from 2003 on, but the deterioration of the groundwater quality still continues. To plan different scenarios of artificial recharge, a regional groundwater model was created, using the Modflow2000 software. The observed groundwater levels (from 1996 on) were used to calibrate the groundwater flow model, taking into account the extraction rates of more than active 500 wells. To simulate infiltration of surface water, runoff data were introduced to the Streamflow package, based on calculations from an HEC-1 model. In the Valley of Santo Domingo, the natural recharge and infiltration of irrigation return water generate an average annual recharge of 188 million m3. As a first step toward an aquifer management plan, results from hydrological and hydraulic models were incorporated into the regional groundwater flow model, to plan scenarios of additional artificial recharge facilities that would prevent deepening of the cone of depression. The elaborated Water Resources Management plan proposes the capture of an annual volume of 30 million m3 of surface water from the Sierra de la Giganta Mountains, which could be accumulated in four water retention dams. The captured surface water then would flow to the four smaller recharge dams with a total storage volume of about 2 million m3, located downstream, where it would recharge the aquifer. As the model indicates, within a period of 3 months, an annual volume of at least 21.5 million m3 of surface water could be infiltrated via the riverbeds and recharge dams. Although this volume may not be enough to prevent saline intrusion from the coast line, it would stop the water level decline in the center of the cone of depression and improve groundwater quality.

ACS Style

Jobst Wurl; Miguel Angel Imaz Lamadrid. Coupled surface water and groundwater model to design managed aquifer recharge for the valley of Santo Domingo, B.C.S., Mexico. Sustainable Water Resources Management 2017, 4, 361 -369.

AMA Style

Jobst Wurl, Miguel Angel Imaz Lamadrid. Coupled surface water and groundwater model to design managed aquifer recharge for the valley of Santo Domingo, B.C.S., Mexico. Sustainable Water Resources Management. 2017; 4 (2):361-369.

Chicago/Turabian Style

Jobst Wurl; Miguel Angel Imaz Lamadrid. 2017. "Coupled surface water and groundwater model to design managed aquifer recharge for the valley of Santo Domingo, B.C.S., Mexico." Sustainable Water Resources Management 4, no. 2: 361-369.

Journal article
Published: 10 April 2017 in Hidrobiológica
Reads 0
Downloads 0
ACS Style

Jobst Wurl; Universidad Autónoma De Baja California Sur. Hydrologic response to climate change in arid regions: Case study in los Comondú, Baja California Sur, Mexico. Hidrobiológica 2017, 27, 13 -22.

AMA Style

Jobst Wurl, Universidad Autónoma De Baja California Sur. Hydrologic response to climate change in arid regions: Case study in los Comondú, Baja California Sur, Mexico. Hidrobiológica. 2017; 27 (1):13-22.

Chicago/Turabian Style

Jobst Wurl; Universidad Autónoma De Baja California Sur. 2017. "Hydrologic response to climate change in arid regions: Case study in los Comondú, Baja California Sur, Mexico." Hidrobiológica 27, no. 1: 13-22.

Journal article
Published: 10 April 2017 in Hidrobiológica
Reads 0
Downloads 0
ACS Style

Jobst Wurl; Universidad Autónoma De Baja California Sur. Hydrologic response to climate change in arid regions: Case study in los Comondú, Baja California Sur, Mexico. Hidrobiológica 2017, 27, 13 -22.

AMA Style

Jobst Wurl, Universidad Autónoma De Baja California Sur. Hydrologic response to climate change in arid regions: Case study in los Comondú, Baja California Sur, Mexico. Hidrobiológica. 2017; 27 (1):13-22.

Chicago/Turabian Style

Jobst Wurl; Universidad Autónoma De Baja California Sur. 2017. "Hydrologic response to climate change in arid regions: Case study in los Comondú, Baja California Sur, Mexico." Hidrobiológica 27, no. 1: 13-22.

Journal article
Published: 31 December 2016 in ÁREAS NATURALES PROTEGIDAS SCRIPTA
Reads 0
Downloads 0
ACS Style

.Jobst Wurl Wurl; Miguel Ángel Imaz Lamadrid.. Las Condiciones Hidrogeológicas en la Cuenca San José del Cabo, Baja California Sur, México. ÁREAS NATURALES PROTEGIDAS SCRIPTA 2016, 2, 91 -102.

AMA Style

.Jobst Wurl Wurl, Miguel Ángel Imaz Lamadrid.. Las Condiciones Hidrogeológicas en la Cuenca San José del Cabo, Baja California Sur, México. ÁREAS NATURALES PROTEGIDAS SCRIPTA. 2016; 2 (2):91-102.

Chicago/Turabian Style

.Jobst Wurl Wurl; Miguel Ángel Imaz Lamadrid.. 2016. "Las Condiciones Hidrogeológicas en la Cuenca San José del Cabo, Baja California Sur, México." ÁREAS NATURALES PROTEGIDAS SCRIPTA 2, no. 2: 91-102.

Young scholars in earth and environmental sciences
Published: 19 November 2016 in Environmental Science and Pollution Research
Reads 0
Downloads 0

The existence of hot springs in the northeastern part of Los Cabos Baja California Sur (BCS), is known from pre-Hispanic times, but their hydrochemical composition had not been previously described. Several springs are located within the watershed of Santiago, and the objective of this study was to define the hydrogeochemical composition of the thermal springs and to characterize the geothermal reservoir. A total of 16 water samples were taken in 11 geothermal manifestations under dry (June 2014) and humid (March 2015) conditions. A geothermal system of low enthalpy and low mineralization was found along the San José del Cabo Fault (FSJC), with an average salinity (TDS) of 261 mg/L and an alkaline pH (8.5–9.5). The hydrogeochemical composition corresponds to the sodium-bicarbonate type, and geothermometers (silica and Na–K) indicate temperatures ranging from 70 to 115 °C for the deep thermal reservoir in conditions of equilibrium. The thermal springs with these hydrogeochemical characteristics differ in respect to the hydrochemical composition of the springs, formally described on several sites of BCS. Br/Cl and B/Cl ratios as well as the enrichment factor (EF) indicate that rainwater with a seawater component represents the source of the thermal spring water. In the springs, a mixture between thermal water and surface water is observed, combined with a relatively deep water circulation, allowing a calcium–sodium exchange, according to the host rock geochemistry. The higher temperatures found at some hot springs are related to the main trace of the San José del Cabo Fault.

ACS Style

Pablo Hernández-Morales; Jobst Wurl. Hydrogeochemical characterization of the thermal springs in northeastern of Los Cabos Block, Baja California Sur, México. Environmental Science and Pollution Research 2016, 24, 13184 -13202.

AMA Style

Pablo Hernández-Morales, Jobst Wurl. Hydrogeochemical characterization of the thermal springs in northeastern of Los Cabos Block, Baja California Sur, México. Environmental Science and Pollution Research. 2016; 24 (15):13184-13202.

Chicago/Turabian Style

Pablo Hernández-Morales; Jobst Wurl. 2016. "Hydrogeochemical characterization of the thermal springs in northeastern of Los Cabos Block, Baja California Sur, México." Environmental Science and Pollution Research 24, no. 15: 13184-13202.

Journal article
Published: 01 August 2015 in Applied Geochemistry
Reads 0
Downloads 0
ACS Style

Leopoldo Gutiérrez-Caminero; Bodo Weber; Jobst Wurl; Mariela Carrera-Muñoz. Tracing toxic elements sources using lead isotopes: An example from the San Antonio–El Triunfo mining district, Baja California Sur, México. Applied Geochemistry 2015, 59, 23 -32.

AMA Style

Leopoldo Gutiérrez-Caminero, Bodo Weber, Jobst Wurl, Mariela Carrera-Muñoz. Tracing toxic elements sources using lead isotopes: An example from the San Antonio–El Triunfo mining district, Baja California Sur, México. Applied Geochemistry. 2015; 59 ():23-32.

Chicago/Turabian Style

Leopoldo Gutiérrez-Caminero; Bodo Weber; Jobst Wurl; Mariela Carrera-Muñoz. 2015. "Tracing toxic elements sources using lead isotopes: An example from the San Antonio–El Triunfo mining district, Baja California Sur, México." Applied Geochemistry 59, no. : 23-32.

Journal article
Published: 29 October 2014 in región y sociedad
Reads 0
Downloads 0

El desarrollo en las zonas áridas está estrechamente relacionado con la disponibilidad y calidad del recurso agua tanto para uso humano como productivo. Este artículo se refiere a su estado actual, disponibilidad y uso en San Miguel y San José de Comondú, dos comunidades-oasis de Baja California Sur, México, en el contexto de una política pública que promueve su crecimiento con base en la explotación de su potencial turístico. Con esto se pretende ofrecer un marco de referencia para comprender la cultura ambiental y de manejo hídrico en esas poblaciones, así como ofrecer opciones para un mejor uso de este recurso en una zona vulnerable, que es representativa de localidades sudcalifornianas aisladas, pero en vías de integración a los procesos económicos y de urbanización que se viven en la entidad.

ACS Style

Alba E. Gámez; Jobst Wurl; Juan Carlos Graciano. Disponibilidad y uso del agua en el oasis de los Comondú, Baja California Sur: retos y oportunidades para el desarrollo rural. región y sociedad 2014, 26, 1 .

AMA Style

Alba E. Gámez, Jobst Wurl, Juan Carlos Graciano. Disponibilidad y uso del agua en el oasis de los Comondú, Baja California Sur: retos y oportunidades para el desarrollo rural. región y sociedad. 2014; 26 (60):1.

Chicago/Turabian Style

Alba E. Gámez; Jobst Wurl; Juan Carlos Graciano. 2014. "Disponibilidad y uso del agua en el oasis de los Comondú, Baja California Sur: retos y oportunidades para el desarrollo rural." región y sociedad 26, no. 60: 1.

Journal article
Published: 01 October 2014 in Journal of Hydrology
Reads 0
Downloads 0
ACS Style

Jobst Wurl; Lia Mendez-Rodriguez; Baudilio Acosta-Vargas. Arsenic content in groundwater from the southern part of the San Antonio-El Triunfo mining district, Baja California Sur, Mexico. Journal of Hydrology 2014, 518, 447 -459.

AMA Style

Jobst Wurl, Lia Mendez-Rodriguez, Baudilio Acosta-Vargas. Arsenic content in groundwater from the southern part of the San Antonio-El Triunfo mining district, Baja California Sur, Mexico. Journal of Hydrology. 2014; 518 ():447-459.

Chicago/Turabian Style

Jobst Wurl; Lia Mendez-Rodriguez; Baudilio Acosta-Vargas. 2014. "Arsenic content in groundwater from the southern part of the San Antonio-El Triunfo mining district, Baja California Sur, Mexico." Journal of Hydrology 518, no. : 447-459.

Journal article
Published: 19 March 2013 in Investigaciones Geográficas
Reads 0
Downloads 0

En el estado de Baja California Sur existen solo cuatro oasis con extensiones mayores a 2.0 km2; La Purísima (2.25 km2) representa el tercero en extensión. En el pasado el oasis fue frecuentemente afectado por inundaciones resultantes de los eventos extremos de precipitación, que generaron graves daños en la cuenca. Se realizó un diagnóstico del oasis La Purísima, con respecto a posibles inundaciones como consecuencia de lluvias extremas, lo cual incluye el análisis estadístico de la precipitación para la elaboración de un modelo hidrológico e hidráulico, con el fin de calcular el caudal máximo, el volumen y la frecuencia de crecidas en los cursos del arroyo Cadegomo bajo diferentes escenarios de lluvias extremas. Finalmente se elaboró un mapa de peligro por inundación según los escenarios elaborados. Se efectuó un análisis de la ocurrencia de inundaciones en el pasado y sus efectos en el oasis por medio de evidencias históricas de inundación de la zona, para verificar su posible aplicación en la calibración de los modelos. Los caudales resultantes de los eventos de precipitación extremos generan un incremento importante de los niveles en el drenaje de la cuenca. La respuesta del arroyo es un incremento en el área de inundación de hasta 14% respecto al tiempo de retorno de 20 años. Un evento de 1 000 años generaría un incremento en el área de inundación de 67% y bajas, afectando las zonas de la región urbana, así como todos los lotes de cultivo.

ACS Style

Jobst Wurl; Cynthia Nayeli Martínez García; Miguel Angel Imaz Lamadrid. Caracterización del peligro por inundaciones en el oasis La Purísima, Baja California Sur, México. Investigaciones Geográficas 2013, 1 .

AMA Style

Jobst Wurl, Cynthia Nayeli Martínez García, Miguel Angel Imaz Lamadrid. Caracterización del peligro por inundaciones en el oasis La Purísima, Baja California Sur, México. Investigaciones Geográficas. 2013; ():1.

Chicago/Turabian Style

Jobst Wurl; Cynthia Nayeli Martínez García; Miguel Angel Imaz Lamadrid. 2013. "Caracterización del peligro por inundaciones en el oasis La Purísima, Baja California Sur, México." Investigaciones Geográficas , no. : 1.

Journal article
Published: 01 May 2008 in Water Quality Research Journal
Reads 0
Downloads 0

Hydrochemical parameters of groundwater from two hydrological basins in northwestern Mexico were measured. In one of them is located the city of Puerto Peñasco, and in the other one is the city of El Rosarito. A factor analysis was used to characterize the main influences that affected the water quality of each region. Based on the results of this method, the aquifer located in Rosarito is mainly affected by seawater intrusion and the presence of high levels of manganese, while the groundwater characteristics at Puerto Peñasco are influenced by reductive conditions, probably caused by bacterial contamination. Although most of the parameters analyzed in this study were within normal ranges for groundwater, knowledge of the factors affecting sources of water can help to develop restoration projects and preventive management practices to prevent an irreversible degradation of groundwater quality.

ACS Style

Lia Mendez-Rodriguez; Susan C. Gardner; Luis Brito-Castillo; Baudilio Acosta-Vargas; Jobst Wurl; Sergio T. Álvarez-Castañeda. Distinguishing the Hydrochemistry of Two Hydrological Basins in Northern Mexico Using Factor Analysis. Water Quality Research Journal 2008, 43, 111 -119.

AMA Style

Lia Mendez-Rodriguez, Susan C. Gardner, Luis Brito-Castillo, Baudilio Acosta-Vargas, Jobst Wurl, Sergio T. Álvarez-Castañeda. Distinguishing the Hydrochemistry of Two Hydrological Basins in Northern Mexico Using Factor Analysis. Water Quality Research Journal. 2008; 43 (2-3):111-119.

Chicago/Turabian Style

Lia Mendez-Rodriguez; Susan C. Gardner; Luis Brito-Castillo; Baudilio Acosta-Vargas; Jobst Wurl; Sergio T. Álvarez-Castañeda. 2008. "Distinguishing the Hydrochemistry of Two Hydrological Basins in Northern Mexico Using Factor Analysis." Water Quality Research Journal 43, no. 2-3: 111-119.