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Weigelt, Estella; Geissler, Wolfram H; Altenbernd-Lang, Tabea; Jokat, Wilfried; Werner, Reinhard (2025): Primary seismic refraction data during cruise RV SONNE SO258/2 (INGON), Indian Ocean off Sri Lanka, profile AWI-20170300 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.974720 (DOI registration in progress)

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Published: 2025-04-17

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Abstract:
As part of the research project INGON (a collaboration between the Alfred Wegener Institute and the GEOMAR), two offshore seismic refraction profiles were obtained during Sonne cruise SO258 to study the separation of India and Antarctica. The presented data set covers data of 30 stations recorded with three different types of Ocean Bottom Seismometer (OBS)-systems: 12 LOBSTER and 2 NAMMU systems of the AWI belonging to the DEPAS pool (German Instrument Pool for Amphibian Seismology) and 20 OBS systems of GEOMAR. The instruments were deployed at an average distance of 11.5 km along a straight profile running perpendicular to the shore. Profiling started on 22 July 2017 at 80.99941°N, 5.814°E, and ended on 23 July 2017 at 80.99998°N, 2.43193°E. All OBS could be synchronized with the GPS clock upon recovery such that skew values describing the clock drift are available for all stations. One station did not return data. The data set provides primary data of OBS-stations concerning the refraction seismic profile AWI-20170300. It comprises (a) seismic station data in segy-format, (b) navigation data with date, time, coordinates, and shot-numbers, and (c) a table with general information on date, coordinates, equipment, data-format, acquisition and recording parameters, and other meta-data.
Keyword(s):
AWI Geophysics; DEPAS; Indian Ocean; Ocean-bottom seismometer; RV Sonne; Seismic refraction data; Sri Lanka
Related to:
Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung; et al. (2017): DEPAS (Deutscher Geräte-Pool für amphibische Seismologie): German Instrument Pool for Amphibian Seismology. Journal of large-scale research facilities JLSRF, 3, https://doi.org/10.17815/jlsrf-3-165
Altenbernd, Tabea; Jokat, Wilfried; Geissler, Wolfram H (2020): The bent prolongation of the 85°E Ridge south of 5°N – Fact or fiction? Tectonophysics, 785, 228457, https://doi.org/10.1016/j.tecto.2020.228457
Altenbernd-Lang, Tabea; Jokat, Wilfried; Geissler, Wolfram H; Haberland, Christian; De Silva, Nalin (2022): Wide-angle seismic transect reveals the crustal structure of(f) southern Sri Lanka. Tectonophysics, 833, 229358, https://doi.org/10.1016/j.tecto.2022.229358
Geissler, Wolfram H (2017): The Expedition SO258/2 of the Research Vessel SONNE to central Indian Ocean in 2017. Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 714, 60 pp, https://doi.org/10.2312/BzPM_0714_2017
Geissler, Wolfram H; Krocker, Ralf; Rohardt, Gerd (2020): Physical oceanography during SONNE cruise SO258/2 [dataset]. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.915981
Jokat, Wilfried; Altenbernd, Tabea; Eagles, Graeme; Geissler, Wolfram H (2021): The early drift of the Indian plate. Scientific Reports, 11(1), 10796, https://doi.org/10.1038/s41598-021-90172-z
Krocker, Ralf; Geissler, Wolfram H; Dorschel, Boris (2017): Swath sonar bathymetry during R/V Sonne cruise SO258/2 with links to multibeam raw data files [dataset]. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.881319
Source:
Weigelt, Estella; Geissler, Wolfram H; Altenbernd-Lang, Tabea; Jokat, Wilfried; Werner, Reinhard (2025): Raw seismic refraction data during cruise RV SONNE SO258/2 (INGON), Indian Ocean off Sri Lanka, profile AWI-20170300 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.974721
Additional metadata:
List of navigation and shot data in ASCII-format, seismic profile AWI-20170300
Project(s):
Marine Geophysics @ AWI (AWI_GeoPhy)
Coverage:
Median Latitude: 4.396244 * Median Longitude: 81.000242 * South-bound Latitude: 2.902383 * West-bound Longitude: 80.999717 * North-bound Latitude: 5.878567 * East-bound Longitude: 81.001150
Date/Time Start: 2017-07-20T19:20:00 * Date/Time End: 2017-07-23T21:50:00
Minimum ELEVATION: -4381.0 m a.s.l. * Maximum ELEVATION: -578.5 m a.s.l.
Event(s):
SO258/2_3-1 * Latitude: 2.902380 * Longitude: 81.000000 * Date/Time: 2017-07-20T19:20:00 * Elevation: -4381.0 m * Location: Indian Ocean * Campaign: SO258/2 (INGON) * Basis: Sonne_2 * Method/Device: Ocean bottom seismometer (OBS) * Comment: OBS St. 301 deployed
SO258/2_3-2 * Latitude: 3.005380 * Longitude: 81.000030 * Date/Time: 2017-07-20T20:42:00 * Elevation: -4404.0 m * Location: Indian Ocean * Campaign: SO258/2 (INGON) * Basis: Sonne_2 * Method/Device: Ocean bottom seismometer (OBS) * Comment: OBS 2 deployed
SO258/2_3-4 * Latitude: 3.108730 * Longitude: 81.000220 * Date/Time: 2017-07-20T21:41:00 * Elevation: -4362.0 m * Location: Indian Ocean * Campaign: SO258/2 (INGON) * Basis: Sonne_2 * Method/Device: Ocean bottom seismometer (OBS) * Comment: OBS 3 deployed
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEventGeissler, Wolfram H
2Station labelStationGeissler, Wolfram H
3Date/time startDate/time startGeissler, Wolfram HSync Time [UTC]
4Date/time startDate/time startGeissler, Wolfram HRecording [UTC]
5Date/time startDate/time startGeissler, Wolfram HDeployment [UTC]
6LONGITUDELongitudeGeissler, Wolfram HGeocode
7LATITUDELatitudeGeissler, Wolfram HGeocode
8ELEVATIONElevationm a.s.l.Geissler, Wolfram HGeocode
9RelocationRelocationmGeissler, Wolfram H
10Date/time endDate/time endGeissler, Wolfram HRecovery, releaser time, local time
11Date/time endDate/time endGeissler, Wolfram HRecording [UTC], # = local time
12Date/time endDate/time endGeissler, Wolfram HSkewtime [UTC], # = local time
13Clock skewSkewµsGeissler, Wolfram H
14InstrumentInstrumentGeissler, Wolfram H
15Recorder typeRecorderGeissler, Wolfram H
16Recorder, serial numberRecorder SNGeissler, Wolfram H
17Seismometer typeSeismometerGeissler, Wolfram H
18Seismometer, serial numberSeismometer SNGeissler, Wolfram H
19Hydrophone typeHydrophoneGeissler, Wolfram H
20Hydrophone typeHydrophoneGeissler, Wolfram H
21Releaser, serial numberReleaser SNGeissler, Wolfram H
22Seismic channel assignmentChannel assignmentGeissler, Wolfram H1
23Seismic channel assignmentChannel assignmentGeissler, Wolfram H2
24Seismic channel assignmentChannel assignmentGeissler, Wolfram H3
25Seismic channel assignmentChannel assignmentGeissler, Wolfram H4
26Seismic channel assignmentChannel assignmentGeissler, Wolfram H5
27Hydrophone gainHydrophone gainGeissler, Wolfram HH
28Hydrophone gainHydrophone gainGeissler, Wolfram HX
29Hydrophone gainHydrophone gainGeissler, Wolfram HY
30Hydrophone gainHydrophone gainGeissler, Wolfram HZ
31Sampling rateSampling rateHzGeissler, Wolfram H
32SEGY fileSEGYGeissler, Wolfram H1
33SEGY fileSEGYGeissler, Wolfram H2
34SEGY fileSEGYGeissler, Wolfram H3
35SEGY fileSEGYGeissler, Wolfram H4
36SEGY fileSEGYGeissler, Wolfram H5
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 2 (ProcLevel2)
Size:
945 data points

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