A5088099532- earthquake and tectonic studies
- Seismology and Earthquake Studies
- Seismic Waves and Analysis
- Seismic Imaging and Inversion Techniques
- High-pressure geophysics and materials
- Earthquake Detection and Analysis
- Geological and Geochemical Analysis
- Seismic Performance and Analysis
- Geophysics and Sensor Technology
- Methane Hydrates and Related Phenomena
- Geological Modeling and Analysis
- Reservoir Engineering and Simulation Methods
- Geology and Paleoclimatology Research
- Geological Studies and Exploration
- Structural Health Monitoring Techniques
- Cryospheric studies and observations
- Geochemistry and Geologic Mapping
- Geological and Geophysical Studies
- Scientific Computing and Data Management
- Geological and Tectonic Studies in Latin America
- Meteorological Phenomena and Simulations
- Geomagnetism and Paleomagnetism Studies
- Advanced Computational Techniques and Applications
- Landslides and related hazards
- Advanced Data Processing Techniques
University of Bergen
2016-2025
University of Oslo
2015
Norsar
2010-2015
Norwegian Geological Survey
2015
Norwegian Geotechnical Institute
2015
Norwegian Mapping Authority
2015
Chr. Michelsen Institute
2015
Wisconsin Disability Association
2015
British Geological Survey
2002-2009
Research Article| September 01, 1999 SeisAn Earthquake Analysis Software Jens Havskov; Havskov Search for other works by this author on: GSW Google Scholar Lars Ottemoller Seismological Letters (1999) 70 (5): 532–534. https://doi.org/10.1785/gssrl.70.5.532 Article history first online: 09 Mar 2017 Cite View This Citation Add to Manager Share Icon Twitter LinkedIn Tools Get Permissions Site Havskov, Ottemoller; Software. 1999;; doi: Download citation file: Ris (Zotero) Refmanager EasyBib...
Abstract The SEISAN software package for processing of earthquake data has been in use 30 yr. is a collection programs that help to carry out tasks from the basic at seismological observatory more advanced research. During its history, adopted different hardware and operating systems. However, core with folder- files-based database event-based remained stable. main focus design development efficiency user. comes manual, tutorial, training exercises. This together regular activities made...
Abstract The European Integrated Data Archive (EIDA) is the infrastructure that provides access to seismic-waveform archives collected by agencies. This distributed system managed Observatories and Research Facilities for Seismology. EIDA seamless seismic data from 12 across Europe means of standard services, exposing on behalf hundreds network operators research organizations. More than 12,000 stations permanent temporary networks equipped with seismometers, accelerometers, pressure...
Subducting plates release fluids as they plunge into Earth's mantle and occasionally rupture to produce intraslab earthquakes. It is debated whether earthquakes are directly related. By combining seismic observations geodynamic models from western Greece, comparing across other subduction zones, we find that effectively track the flow of their slab source at >80 km depth sink shallow (<40 km) depth. Between sink, updip under a sealed plate interface, facilitating In some locations, seal...
Abstract The Western Hellenic Subduction Zone is characterized by a transition from oceanic to continental subduction. In the southern portion of system, abundant seismicity reaches depths 100 km 190 km, while northern rarely exhibits deep earthquakes. Our study investigates how this oceanic‐continental affects fluid release and related along strike. We present results local earthquake tomography double‐difference relocation in conjunction with published images based on scattered teleseismic...
In this article we describe EPOS Seismology, the Thematic Core Service consortium for seismology domain within European Plate Observing System infrastructure. Seismology was developed alongside build-up of during last decade, in close collaboration between existing pan-European seismological initiatives ORFEUS (Observatories and Research Facilities Seismology), EMSC (Euro-Mediterranean Seismological Center) EFEHR (European Earthquake Hazard Risk) their respective communities. It provides on...
We investigated the use of an automated routine to determine moment magnitudes from displacement spectra local and regional earthquakes. Two algorithms, a genetic algorithm converging grid search, were developed tested with earthquake data Mexico, Norway, Deception Island (Antarctica). It was found that compared manual analysis, algorithms give reliable automatic magnitude ( M w) estimates in range -1 < 8. The search appeared be more cost-effective than algorithm. w at distances seems...
Research Article| October 01, 2013 A Local Magnitude Scale ML for the United Kingdom Lars Ottemöller; Ottemöller Department of Earth Science, University Bergen, Allegt. 41, 5007 Norwaylars.ottemoller@geo.uib.no Search other works by this author on: GSW Google Scholar Susanne Sargeant British Geological Survey, Murchison House, West Mains Road, Edinburgh EH9 3LA, UKslsa@bgs.ac.uk Author and Article Information Publisher: Seismological Society America First Online: 14 Jul 2017 Online ISSN:...
A moderate size seismic event on 7 May 2001 was strongly felt platforms in the Ekofisk oil field, southern North Sea, but did not cause damage to or wells. We combined near‐ and far‐field observations develop a consistent source model determine whether induced. Seismic data placed epicenter inside field suggested shallow depth based spectral moment tensor analysis. GPS from displayed permanent vertical horizontal movement due event. topographic bulge sea bottom, revealed by differential...
Research Article| January 01, 2010 Preliminary Analysis of the 21 February 2008 Svalbard (Norway) Seismic Sequence Myrto Pirli; Pirli NORSAR PO Box 53 N-2027, Kjeller Norway myrto.pirli@norsar.no (M. P.) 1Norwegian Array (NORSAR), Kjeller, Search for other works by this author on: GSW Google Scholar Johannes Schweitzer; Schweitzer Lars Ottemöller; Ottemöller 2British Geological Survey, Edinburgh, Scotland, U.K.; now at University Bergen, Department Earth Sciences. Mohammad Raeesi; Raeesi...
Local magnitudes calculated at stations less than 10 km from earthquakes in the British Isles are up to one unit of magnitude higher local more distant stations. This causes a considerable overestimate event magnitude, particularly for small events, which only recorded short distances. Data Central Italy and Norway show that same problem also occurs other regions, suggesting this is general issue scales. We investigate addition new exponential term form scale. corrects higher-than-expected...
SUMMARY Intraplate earthquakes in stable continental regions exhibit diverse characteristics terms of timing, spatial distribution and magnitude. They are often unexpected, their underlying physical mechanisms not well understood. This complexity is particularly apparent Norway, where seismicity mostly localized on the margin coastal areas. Various studies have attempted to explain causes Norway by invoking different sources stress, ranging from regional stress due ridge push local effects...
SUMMARY A massive vapour cloud explosion occurred at the Buncefield fuel depot near Hemel Hempstead, UK, in morning of 2005 December 11. The was result an overflow from one storage tanks with release over 300 tons petrol and generating a that spread area 80 000 m2, before being ignited. Considerable damage caused vicinity total 43 people were injured. detected by seismograph stations UK Netherlands infrasound arrays Netherlands. We analysed seismic recordings to determine origin time...
Lars Ottemöller, Marte Louise Strømme and Berit Marie Storheim report on Seismic Monitoring Data Processing at the Norwegian National Network for Summary of Bulletin International Seismological Centre.
SUMMARY The Nordland region, Northern Norway, situated in an intraplate continental setting, has the highest seismicity rate mainland Norway. However, exact cause of this region is still debated. Better understanding factors that influence can help increase knowledge general. Here, we address problem with aid a new high-resolution 3-D VP and VP/VS ratio images crust using seismic traveltime tomography. These show existence localized, 10–15 km Moho step runs parallel to coast. north–south...
In this study we investigated lateral variation of Lg wave propagation in southern Mexico from recordings 92 crustal earthquakes along 591 travel paths. The efficiency was measured terms to Pn spectral ratio. It found that is inefficient for paths through the Gulf coastal plains and Tehuantepec, areas with thick layers sediments. An average quality factor, Q , as a function frequency estimated efficient relation obtained range 1.6–8 Hz ( f ) = 204 0.85 . −1 solved mixed‐determined inverse...
Ambient seismic noise is caused by a number of sources in specific frequency bands. The quantification ambient makes it possible to evaluate station and network performance. We levels Norway from the 2013 data set Norwegian National Seismic Network as well two temporary deployments. Apart performance, we studied geographical temporal variations, developed local model for Norway. microseism peaks related ocean are significant We, therefore, investigated relationship between oceanic weather...
Abstract Although Norway has had an open data policy for seismological a long time, access to good portion of the required use nonstandard tools. This changed with establishment dedicated European Integrated Data Archive (EIDA) node that is operated jointly by UiB (University Bergen)-NORSAR. now gives 139 stations and currently 12.1 Tb data. The archive continues grow new from permanent are added in near-real backfilling archives networks providing temporary deployments. software behind EIDA...
Abstract Volcano observatories (VOs) around the world are required to maintain surveillance of their volcanoes and inform civil protection aviation authorities about impending eruptions. They often work through consolidated procedures respond volcanic crises in a timely manner provide service community aimed at reducing potential impact an eruption. Within International Airways Watch (IAVW) framework Civil Aviation Organisation (ICAO), designated State Observatories (SVOs) asked operate...