At a meeting in Hanoi on 23 August 2001, the IASPEI Commission on Seismological Observation and Interpretation decided to set up a Working Group on Standard Phase Names. The working group has put together a modified standard nomenclature of seismic phases that is meant to be concise, consistent, and self-explanatory on the basis of agreed rules. We did not try to create a complete list of all phases. The list is open to further development. The list is not meant to satisfy specific requirements of seismologists to name various phases used in a particular type of research. Instead, it is hoped that the new list will ensure expanded standardized data reporting and exchange by data analysts and other users. This should result in a broad and unambiguous database for research and practical applications. At the same time the list and the principles outlined below may provide useful guidance for naming previously unknown seismic phases. The new nomenclature partially modifies and complements an earlier one published in the last edition of the Manual of Seismolagical Observatory Practice (Willmore, 1979) and in the seismic bulletins published by ISC. It is more in tune with modern Earth and travel-time models. As opposed to former practice, the working group (hereinafter WG) tried to make sure that the phase name generally reflects the type of wave and the path it has traveled. Accordingly, symbols for characterizing onset quality, polarity, etc. will no longer be part of the phase name. The WG is also aware that seismic phases exist that are common in some regions but are only rarely or not found in other regions, such as Pb (P*), PnPn, PbPb, etc. The extended list of phase names as presented below reflects significantly increased detection capabilities of modern seismic sensors and sensor arrays, even of …

Summary. The goal of this study is to refine knowledge of the structure and tectonic history of the European Arctic using the combination of all available seis

Summary. Teleseismic data have been collected with temporary seismograph stations on two profiles in southern Norway. Including the permanent arrays NORSAR and

Dynamic glacier activity is increasingly observed through passive seismic monitoring. We analysed near-regional-scale seismicity on the Arctic archipelago of Svalbard to identify seismic icequake signals and to study their spatial–temporal distribution within the 14-year period from 2000 until 2013. This is the first study that uses seismic data recorded on permanent broadband stations to detect and locate icequakes in different regions of Spitsbergen, the main island of the archipelago. A temporary local seismic network and direct observations of glacier calving and surging were used to identify icequake sources. We observed a high number of icequakes with clear spectral peaks between 1 and 8 Hz in different parts of Spitsbergen. Spatial clusters of icequakes could be associated with individual grounded tidewater glaciers and exhibited clear seasonal variability each year with more signals observed during the melt season. Locations at the termini of glaciers, and correlation with visual calving observations in situ at Kronebreen, a glacier in the Kongsfjorden region, show that these icequakes were caused dominantly by calving. Indirect evidence for glacier surging through increased calving seismicity was found in 2003 at Tunabreen, a glacier in central Spitsbergen. Another type of icequake was observed in the area of the Nathorstbreen glacier system. Seismic events occurred upstream of the glacier within a short time period between January and May 2009 during the initial phase of a major glacier surge. This study is the first step towards the generation and implementation of an operational seismic monitoring strategy for glacier dynamics in Svalbard. Keywords: Iceberg calving; glacier surge; icequake; cryo-seismology; Svalbard. (Published: 4 December 2015) Citation: Polar Research 2015, 34 , 26178, http://dx.doi.org/10.3402/polar.v34.26178