The 8F Seismic Network, 2018–2019

 
Cite as:
Schlindwein, Vera; Kirk, Henning; Hiller, Marc; Scholz, John-Robert; Schmidt-Aursch, Mechita (2022): GAKKELDEEP: DEPAS ocean-bottom seismometer operations at the Gakkel Ridge in 2018-2019. GFZ Data Services. Other/Seismic Network. doi:10.14470/3S7563492742.
Network code:
8F
Type:
Temporary
Time Range:
2018–2019
Terms of use:
Creative Commons Attribution 4.0 International Please check license details Restricted
Available 2025-06-01. Access info
Archived at:
GFZ
Institution(s):
Alfred-Wegener-Institut, Bremerhaven
Creator(s):
Schlindwein, Vera; Kirk, Henning; Hiller, Marc; Scholz, John-Robert; Schmidt-Aursch, Mechita
Description*:
GAKKELDEEP: DEPAS ocean-bottom seismometer operations at the Gakkel Ridge in 2018-2019
Abstract:
Gakkel Deep is a pilot project that installed a network of four broadband ocean bottom seismometers (OBS) near Gakkel Deep, the deepest depression in the Arctic Ocean, at the eastern end of the ultraslow spreading Gakkel Ridge. The area is covered year-round by sea ice. In order to enable a safe recovery of the OBS in a sea ice covered ocean, the OBS were modified to include a positioning system that allows to track the instruments at meter accuracy during descent and ascent and when stuck beneath ice floes. This pilot studied aimed at testing the recovery procedure of the OBS, checking the performance of the modified instrument design, getting an overview of ambient seismic noise at the bottom of the Arctic Ocean and at contributing to a better understanding of the origin of the Gakkel Deep depression with more than 3000 m of topography. The network is shaped as a rectangle with 8 km and 10 km side length and is centered at about 82°N 119.5°E at water depths between 3600 m and 4100 m. It is positioned slightly to the east of the present plate boundary in an area with volcanic structures. Instruments from the German Instrument Pool of Amphibian Seismology (DEPAS) were deployed during RV Polarstern cruise PS115/2 on September 15, 2018. Instrument recovery was completed during RV Polarstern cruise PS122/1 on September 27, 2019. The data set contains about 377 days of continuous records at 250 Hz sample rate. The station locations were determined with Ultra Short Baseline (USBL) ranging, the accuracy is approx. 10 m. The non-linear clock drift was determined by means of noise cross-correlations and applied to the data set.

* 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
Funder:
AWI
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 8F [hide/show]

Creator(s):
orcid:0000-0001-5570-2753 Schlindwein, Vera a; Kirk, Henning a; Hiller, Marc a; orcid:0000-0003-1404-2335 Scholz, John-Robert a; orcid:0000-0002-2393-4514 Schmidt-Aursch, Mechita a
a Alfred Wegener Institute (AWI), Bremerhaven, Germany
Title:
GAKKELDEEP: DEPAS ocean-bottom seismometer operations at the Gakkel Ridge in 2018-2019
Publisher:
GFZ Data Services
Resource Type:
Other/Seismic Network
Network DOI:
doi:10.14470/3S7563492742
Related Reference(s):
  1. Schlindwein, Vera; Kirk, Henning; Hiller, Marc; Scholz, John-Robert; Schmidt-Aursch, Mechita (2022). Project GAKKELDEEP: DEPAS ocean-bottom seismometer operations at the Gakkel Ridge in 2018-2019. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA. doi:10.1594/PANGAEA.947045
  2. 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
[+] To provide additional references, PIs should contact GEOFON staff.

Station List for Network Code 8F

Code
Station description
Begin
End
Loc
Channels
Flags
GKD01
2018-09-15
2019-09-27
--
CDH CH1 CH2 CHZ
GKD02
2018-09-15
2019-09-27
--
CDH CH1 CH2 CHZ
GKD03
2018-09-15
2019-09-27
--
CDH CH1 CH2 CHZ
GKD04
2018-09-15
2019-09-27
--
CDH CH1 CH2 CHZ

Database last updated at 2022 Nov 03 12:12:38