Alexander Fedorov

Dr. Alexander Fedorov

Melnikov Permafrost Institute, 677010 Yakutsk, Russia
+1
orcid

Research Focus & Metrics

Academic Career Length

25Years (2002-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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14 March 2016 in Nature Geoscience
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Journal Article
Closed access
ALAnna K. Liljedahl
Anna K. Liljedahl
JBJulia Boike
Julia Boike
RDRonald P. Daanen
Ronald P. Daanen
Alexander FedorovAlexander Fedorov
Alexander Fedorov
GFGerald Frost
Gerald Frost
DZDonatella Zona
Donatella Zona

3 December 2009 in Permafrost and Periglacial Processes
Verified
Journal Article
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PDF file
Yoshihiro IijimaYoshihiro Iijima
Yoshihiro Iijima
Alexander FedorovAlexander Fedorov
Alexander Fedorov
HPHotaek Park
Hotaek Park
KSKazuyoshi Suzuki
Kazuyoshi Suzuki
HYHironori Yabuki
Hironori Yabuki
TOTetsuo Ohata
Tetsuo Ohata

27 June 2017 in Remote Sensing
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Journal Article
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INIngmar Nitze
Ingmar Nitze
GGGuido Grosse
Guido Grosse
Benjamin JonesBenjamin Jones
Benjamin Jones
CAChristopher Arp
Christopher Arp
MUMathias Ulrich
Mathias Ulrich
AVAlexandra Veremeeva
Alexandra Veremeeva
Lakes are a ubiquitous landscape feature in northern permafrost regions. They have a strong impact on carbon, energy and water fluxes and can be quite responsive to climate change. The monitoring of lake change in northern high latitudes, at a sufficiently accurate spatial and temporal resolution, is crucial for understanding the underlying processes driving lake change. To date, lake change studies in permafrost regions were based on a variety of different sources, image acquisition periods and single snapshots, and localized analysis, which hinders the comparison of different regions. Here, we present a methodology based on machine-learning based classification of robust trends of multi-spectral indices of Landsat data (TM, ETM+, OLI) and object-based lake detection, to analyze and compare the individual, local and regional lake dynamics of four different study sites (Alaska North Slope, Western Alaska, Central Yakutia, Kolyma Lowland) in the northern permafrost zone from 1999 to 2014. Regional patterns of lake area change on the Alaska North Slope (−0.69%), Western Alaska (−2.82%), and Kolyma Lowland (−0.51%) largely include increases due to thermokarst lake expansion, but more dominant lake area losses due to catastrophic lake drainage events. In contrast, Central Yakutia showed a remarkable increase in lake area of 48.48%, likely resulting from warmer and wetter climate conditions over the latter half of the study period. Within all study regions, variability in lake dynamics was associated with differences in permafrost characteristics, landscape position (i.e., upland vs. lowland), and surface geology. With the global availability of Landsat data and a consistent methodology for processing the input data derived from robust trends of multi-spectral indices, we demonstrate a transferability, scalability and consistency of lake change analysis within the northern permafrost region.

14 October 2014 in Climate Dynamics
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Journal Article
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HPHotaek Park
Hotaek Park
Alexander FedorovAlexander Fedorov
Alexander Fedorov
MZMikhail N. Zheleznyak
Mikhail N. Zheleznyak
PKPavel Y. Konstantinov
Pavel Y. Konstantinov
John E WalshJohn E Walsh
John E Walsh

23 December 2002 in Hydrological Processes
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Journal Article
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ASA. Sugimoto
A. Sugimoto
DND. Naito
D. Naito
NYN. Yanagisawa
N. Yanagisawa
KIK. Ichiyanagi
K. Ichiyanagi
NKN. Kurita
N. Kurita
Alexander FedorovAlexander Fedorov
Alexander Fedorov

19 March 2013 in Ecohydrology
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Journal Article
Closed access
PDF file
Alexander FedorovAlexander Fedorov
Alexander Fedorov
PGP. P. Gavriliev
P. P. Gavriliev
PKP. Y. Konstantinov
P. Y. Konstantinov
THT. Hiyama
T. Hiyama
Yoshihiro IijimaYoshihiro Iijima
Yoshihiro Iijima
GIGo Iwahana
Go Iwahana