Basic Research on Seismic and Infrasonic Monitoring of the European Arctic
This project represents a three-year research effort aimed at improving seismic and infrasonic monitoring tools at regional distances, with emphasis on the European Arctic region, which includes the former Novaya Zemlya test site. The project has three main components: a) to improve seismic processi...
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ftdtic:ADA516624 2023-05-15T14:59:46+02:00 Basic Research on Seismic and Infrasonic Monitoring of the European Arctic Ringdal, Frode Kvaerna, Tormod Mykkeltveit, Svein Gibbons, Stevn J. Shweitzer, Johannes NORWEGIAN SEISMIC ARRAY (NORSAR) KJELLER 2008-09 text/html http://www.dtic.mil/docs/citations/ADA516624 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA516624 en eng http://www.dtic.mil/docs/citations/ADA516624 Approved for public release; distribution is unlimited. DTIC Seismic Detection and Detectors *SEISMIC DETECTION *INFRASONIC RADIATION *ROCKET LAUNCHING *RUSSIA ARCTIC REGIONS SEISMIC ARRAYS SEISMOMETERS NORTHERN EUROPE WAVEFORMS SYMPOSIA HIGH FREQUENCY SIGNAL PROCESSING NORWAY INFRASONIC MONITORING TOOLS NOVAYA ZEMLYA TEST SITE VESPAGRAM ANALYSIS FOREIGN REPORTS Text 2008 ftdtic 2016-02-23T00:03:38Z This project represents a three-year research effort aimed at improving seismic and infrasonic monitoring tools at regional distances, with emphasis on the European Arctic region, which includes the former Novaya Zemlya test site. The project has three main components: a) to improve seismic processing in this region using the regional seismic arrays installed in northern Europe, b) to investigate the potential of using combined seismic/infrasonic processing to characterize events in this region and c) to carry out experimental operation, evaluation and tuning of the seismic threshold monitoring technique. The recent upgrade of the Spitsbergen seismic array, which has included the installation of five new three-component seismometers, as well as an increase in the sampling rate from 40 to 80 Hz, has resulted in significant improvements in high-frequency signal characterization as well as S-phase detection. Our studies have shown a remarkably efficient wave propagation from events near Novaya Zemlya across the Barents Sea. Significant signal energy at frequencies of up to 30 Hz and above has been observed, even for seismic events below a magnitude 3 at an epicentral distance of more than 1,000 km. In order to investigate if this same efficient propagation could be observed at the ARCES array in northern Norway, we have recently installed additional recording equipment at the center broadband element of ARCES, with a sampling rate of 100 Hz. Our initial results are similar to those seen at Spitsbergen. We should note that the available high-frequency data so far does not include events to the east and northeast of the ARCES array, and the high-frequency propagation from the Novaya Zemlya region to ARCES is therefore still unknown. As more data are accumulated, we may be in a position to carry out a detailed study of the high-frequency propagation characteristics for additional paths in the region. Analysis of data from temporary seismic stations installed as part of th Published in Proceedings of the 30th Monitoring Research Review: Ground-Based Nuclear Explosion Monitoring Technologies, 23-25 Sep 2008, Portsmouth, VA, 23-25 Sep 2008, p968-977, sponsored by the National Nuclear Security Administration (NNSA) and the Air Force Research Laboratory (AFRL). The original document contains color images. Text Arctic Barents Sea Northern Norway Novaya Zemlya Spitsbergen Defense Technical Information Center: DTIC Technical Reports database Arctic Barents Sea Norway |
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Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Seismic Detection and Detectors *SEISMIC DETECTION *INFRASONIC RADIATION *ROCKET LAUNCHING *RUSSIA ARCTIC REGIONS SEISMIC ARRAYS SEISMOMETERS NORTHERN EUROPE WAVEFORMS SYMPOSIA HIGH FREQUENCY SIGNAL PROCESSING NORWAY INFRASONIC MONITORING TOOLS NOVAYA ZEMLYA TEST SITE VESPAGRAM ANALYSIS FOREIGN REPORTS |
spellingShingle |
Seismic Detection and Detectors *SEISMIC DETECTION *INFRASONIC RADIATION *ROCKET LAUNCHING *RUSSIA ARCTIC REGIONS SEISMIC ARRAYS SEISMOMETERS NORTHERN EUROPE WAVEFORMS SYMPOSIA HIGH FREQUENCY SIGNAL PROCESSING NORWAY INFRASONIC MONITORING TOOLS NOVAYA ZEMLYA TEST SITE VESPAGRAM ANALYSIS FOREIGN REPORTS Ringdal, Frode Kvaerna, Tormod Mykkeltveit, Svein Gibbons, Stevn J. Shweitzer, Johannes Basic Research on Seismic and Infrasonic Monitoring of the European Arctic |
topic_facet |
Seismic Detection and Detectors *SEISMIC DETECTION *INFRASONIC RADIATION *ROCKET LAUNCHING *RUSSIA ARCTIC REGIONS SEISMIC ARRAYS SEISMOMETERS NORTHERN EUROPE WAVEFORMS SYMPOSIA HIGH FREQUENCY SIGNAL PROCESSING NORWAY INFRASONIC MONITORING TOOLS NOVAYA ZEMLYA TEST SITE VESPAGRAM ANALYSIS FOREIGN REPORTS |
description |
This project represents a three-year research effort aimed at improving seismic and infrasonic monitoring tools at regional distances, with emphasis on the European Arctic region, which includes the former Novaya Zemlya test site. The project has three main components: a) to improve seismic processing in this region using the regional seismic arrays installed in northern Europe, b) to investigate the potential of using combined seismic/infrasonic processing to characterize events in this region and c) to carry out experimental operation, evaluation and tuning of the seismic threshold monitoring technique. The recent upgrade of the Spitsbergen seismic array, which has included the installation of five new three-component seismometers, as well as an increase in the sampling rate from 40 to 80 Hz, has resulted in significant improvements in high-frequency signal characterization as well as S-phase detection. Our studies have shown a remarkably efficient wave propagation from events near Novaya Zemlya across the Barents Sea. Significant signal energy at frequencies of up to 30 Hz and above has been observed, even for seismic events below a magnitude 3 at an epicentral distance of more than 1,000 km. In order to investigate if this same efficient propagation could be observed at the ARCES array in northern Norway, we have recently installed additional recording equipment at the center broadband element of ARCES, with a sampling rate of 100 Hz. Our initial results are similar to those seen at Spitsbergen. We should note that the available high-frequency data so far does not include events to the east and northeast of the ARCES array, and the high-frequency propagation from the Novaya Zemlya region to ARCES is therefore still unknown. As more data are accumulated, we may be in a position to carry out a detailed study of the high-frequency propagation characteristics for additional paths in the region. Analysis of data from temporary seismic stations installed as part of th Published in Proceedings of the 30th Monitoring Research Review: Ground-Based Nuclear Explosion Monitoring Technologies, 23-25 Sep 2008, Portsmouth, VA, 23-25 Sep 2008, p968-977, sponsored by the National Nuclear Security Administration (NNSA) and the Air Force Research Laboratory (AFRL). The original document contains color images. |
author2 |
NORWEGIAN SEISMIC ARRAY (NORSAR) KJELLER |
format |
Text |
author |
Ringdal, Frode Kvaerna, Tormod Mykkeltveit, Svein Gibbons, Stevn J. Shweitzer, Johannes |
author_facet |
Ringdal, Frode Kvaerna, Tormod Mykkeltveit, Svein Gibbons, Stevn J. Shweitzer, Johannes |
author_sort |
Ringdal, Frode |
title |
Basic Research on Seismic and Infrasonic Monitoring of the European Arctic |
title_short |
Basic Research on Seismic and Infrasonic Monitoring of the European Arctic |
title_full |
Basic Research on Seismic and Infrasonic Monitoring of the European Arctic |
title_fullStr |
Basic Research on Seismic and Infrasonic Monitoring of the European Arctic |
title_full_unstemmed |
Basic Research on Seismic and Infrasonic Monitoring of the European Arctic |
title_sort |
basic research on seismic and infrasonic monitoring of the european arctic |
publishDate |
2008 |
url |
http://www.dtic.mil/docs/citations/ADA516624 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA516624 |
geographic |
Arctic Barents Sea Norway |
geographic_facet |
Arctic Barents Sea Norway |
genre |
Arctic Barents Sea Northern Norway Novaya Zemlya Spitsbergen |
genre_facet |
Arctic Barents Sea Northern Norway Novaya Zemlya Spitsbergen |
op_source |
DTIC |
op_relation |
http://www.dtic.mil/docs/citations/ADA516624 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1766331882826366976 |