The 9C Seismic Network, 2007–2008

 
Cite as:
Schweitzer, Johannes; Schmidt-Aursch, Mechita; Krüger, Frank; Guterch, Aleksander (2024): BEAR ISLAND: DEPAS ocean-bottom seismometer operations in the Fram Strait in 2007-2008. GFZ Data Services. Other/Seismic Network. doi:10.14470/4P044426.
Network code:
9C
Type:
Temporary
Network dates:
2007-01-01 to 2008-12-30
Data time range:
2007–2008
Terms of use:
Creative Commons Attribution 4.0 InternationalCC-BY-4.0 Available since 2024-07-15
Institution(s):
Alfred-Wegener-Institut, NORSAR
Creator(s):
Schweitzer, Johannes; Schmidt-Aursch, Mechita; Krüger, Frank; Guterch, Aleksander (LEGACY)
Description*:
DEPAS ocean-bottom seismometer operations in the Fram Strait in 2007-2008 (BEAR ISLAND)
Abstract:
BEAR ISLAND (The Dynamic Continental Margin Between the Mid-Atlantic-Ridge System (Mohns Ridge, Knipovich Ridge) and the Bear Island Region) is an interdisciplinary project exploring the stress conditions and sources, and the dynamics and deformation characteristics of the continental margin between the Mid-Atlantic Ridge and Bear Island from its top sedimentary cover to its imprint in the upper mantle. In this region the margin includes an extremely thick sedimentary wedge and steep slopes, with at least one major paleo-fracture zone cutting through the wedge. Recent studies in this area indicate very low seismic velocities in the lithosphere and the stress field undergoes an extensional-compressional transition. It is therefore of particular interest to understand the structural architecture, the stress and the dynamics of the whole region because of its natural hazard exposure and the processes involved in the formation of the margin and the opening of the North Atlantic. To achieve this, deep seismic sounding data, as well as records from temporary broadband installations, supplementary to data from existing seismic stations in the region were collected. A key element of the project was the operation of a long-term network of broadband ocean-bottom seismometers (OBS). Additionally, two new broadband seismometers and a small temporary seismic array with 13 sensors were operated. Active seismic refraction/reflection experiments were conducted along two profiles crossing the region and recorded with additional short period OBSs and land stations. Twelve broadband ocean-bottom seismometers (OBS) from the German Instrument Pool of Amphibian Seismology (DEPAS) were deployed as part of this network with RV Horyzont II in September 2007. They were distributed on the Barents shelf, the slope and the deep sea near the Mid-Atlantic Ridge. Nine instruments could be recovered in August 2008 with RV Horyzont II. One instrument was fished before, one was destroyed during recovery and one got lost. Seven stations recorded data for the full deployment period; two stations have no skew value. The time correction for these stations was estimated by noise cross-correlations. Based on previous experiments, the accuracy of the positions is estimated to 500 m.

* Description is taken from seismic metadata, and may not match the preferred title for citations.
DataCite metadata:
HTML | JSON | XML | INSPIRE
Seismic metadata:
fdsnws-station
Network KML file:
To retrieve waveform data and metadata (including instrument responses) for this and other seismic networks, see here.

Extended Network Information for network 9C [hide/show]

Creator(s):
orcid:0000-0002-5986-1492 Schweitzer, Johannes a; orcid:0000-0002-2393-4514 Schmidt-Aursch, Mechita b; orcid:0009-0007-2662-008X Krüger, Frank c; Guterch, Alexander d
a Norwegian Seismic Array, Lillestrøm, Norway, b Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany, c University of Potsdam, Germany, d Polish Academy of Sciences, Warsaw, Poland
Title:
BEAR ISLAND: DEPAS ocean-bottom seismometer operations in the Fram Strait in 2007-2008
Publisher:
GFZ Data Services
Resource Type:
Other/Seismic Network
Network DOI:
doi:10.14470/4P044426
Related Reference(s):
  1. Schweitzer, J.; Paulsen, B.; Antonovskaya, G.; Fedorov, A.; Konechnaya, Y.; Asming, V.; Pirli, M. (2022). EURARC – a bulletin for the European Arctic 1990 – 2013. ISC Seismological Dataset Repository. doi:10.31905/TYLLQY8T
  2. Crawford, Wayne (2021). obsinfo. Python standalone application for creating FDSN-standard (StationXML).
  3. Johannes Schweitzer; Berit Paulsen; Galina N. Antonovskaya; Andrey V. Fedorov; Yana V. Konechnaya; Vladimir E. Asming; Myrto Pirli (2021). A 24‐Yr‐Long Seismic Bulletin for the European Arctic. Seismological Research Letters 2021;; 92 (5): 2758–2767. doi:10.1785/0220210018
  4. Crawford, Wayne (2019). OBS data/metadata proposal.
  5. Myrto Pirli; Johannes Schweitzer (2018). BARENTS16: a 1-D velocity model for the western Barents Sea. J Seismol 22, 69–81. doi:10.1007/s10950-017-9692-y
  6. Myrto Pirli; Johannes Schweitzer; IPY Project Consortium (2018). Seismicity along the Mohns—Knipovich Ridge Bend and its correlation to ridge spreading rate. Journal of Geodynamics, Volume 118, July 2018, Pages 182-196. doi:10.1016/j.jog.2018.01.013
  7. Schmidt-Aursch, Mechita; Haberland, Christian (2017). DEPAS (Deutscher Geräte-Pool für amphibische Seismologie): German Instrument Pool for Amphibian Seismology. Journal of large-scale research facilities JLSRF. doi:10.17815/jlsrf-3-165
  8. Audun Libak; Rolf Mjelde; Henk Keers; Jan Inge Faleide; Yoshio Murai (2012). An integrated geophysical study of Vestbakken Volcanic Province, western Barents Sea continental margin, and adjacent oceanic crust. Mar Geophys Res 33, 185–207. doi:10.1007/s11001-012-9155-3
  9. Juerg Hauser; Kathleen M. Dyer; Michael E. Pasyanos; Hilmar Bungum; Jan I. Faleide; Stephen A. Clark; Johannes Schweitzer (2011). A probabilistic seismic model for the European Arctic. Journal of Geophysical Research: Solid Earth: Volume 116, Issue B1. doi:10.1029/2010JB007889
  10. Myrto Pirli; Johannes Schweitzer; IPY Project Consortium (2011). The International Polar Year (IPY) broadband ocean-bottom seismograph deployment: observations, limitations and integration with the IPY land network. NORSAR Scientific Report 2-2011, 51–64. doi:10.21348/p.2011.0001
  11. Wojciech Czuba; Marek Grad; Rolf Mjelde; Aleksander Guterch; Audun Libak; Frank Krüger; Yoshio Murai; Johannes Schweitzer; IPY Project Group (2011). Continent—ocean-transition across a trans-tensional margin segment: off Bear Island, Barents Sea. Geophysical Journal International, Volume 184, Issue 2, February 2011, Pages 541–554. doi:10.1111/j.1365-246X.2010.04873.x
  12. Johannes Schweitzer; IPY Project Consortium (2008). The International Polar Year 2007-2008 Project “The Dynamic Continental Margin between the Mid-Atlantic-Ridge System (Mohn’s Ridge, Knipovich Ridge) and the Bear Island Region”. NORSAR Scientific Report 1–2008, 53-63. doi:10.21348/p.2008.0001
[+] To provide additional references, PIs should contact GEOFON staff.
Place(s):
Fram Strait
Subject(s)a:
GCMD keyword(s):
Earthquakes Geophysical stations/networks Hydrophones Marine geophysics Seismometers
Funding Reference(s):
The Research Council of Norway (176069)

Station List for Network Code 9C

Code
Station description
Begin
End
Loc
Channels
Flags
OBS01
1st site
2007-09-22
2008-08-16
--
BDH BH1 BH2 BHZ
OBS02
2nd site
2007-09-22
2008-08-16
--
BDH BH1 BH2 BHZ
OBS04
3rd site
2007-09-27
2008-04-04
--
BDH BH1 BH2 BHZ
OBS05
4th site
2007-09-27
2008-08-18
--
BDH BH1 BH2 BHZ
OBS06
5th site
2007-09-27
2008-08-17
--
BDH BH1 BH2 BHZ
OBS07
6th site
2007-09-27
2008-08-17
--
BDH BH1 BH2 BHZ
OBS08
7th site
2007-09-22
2008-08-18
--
BDH BH1 BH2 BHZ
OBS09
8th site
2007-09-19
2008-08-17
--
BDH BH1 BH2 BHZ
OBS11
9th site
2007-09-19
2008-08-19
--
BDH BH1 BH2 BHZ
OBS12
10th site
2007-09-20
2008-08-19
--
BDH BH1 BH2 BHZ

Database last updated at 2024 Oct 04 14:00:02