Grevemeyer, Ingo; Henstock, Timothy J; Li, Yuhan; Dannowski, Anke: Seismic processed data (Ocean Bottom Seismometer working area dataset, profile P200e) during RRS JAMES COOK cruise JC228, Guatemala Basin, North Pacific Ocean [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.977815 (dataset in review)
Abstract:
The data set comprise processed active-source seismic data collected with ocean bottom seismometer (OBS). The seismic shots were recorded in the trench outerrise region of the subduction zone off Costa Rica during the expedition JC228 of the research vessel RRS JAMES COOK in December 2022 and January 2023. The data set consists of 36 OBS stations deployed at an interval of 3.5 to 7 km receiving shots of a tuned 5000 cubi-inch airgun array, fired at 90 s interval. The seismic line is a 250 km long West-East trending profile covering the incoming oceanic plate and the Costa Rican deep sea trench. Each OBS consists of 4 channels (channel 1: hydrophone; channel 2: horizontal component 1; channel 3: horizontal component 2; channel 4: vertical component).
Related to:
Grevemeyer, Ingo; Henstock, Timothy J; Li, Yuhan; Dannowski, Anke: Ancillary navigational metadata from seismic processed data (Ocean Bottom Seismometer working area dataset, profile 200e) during RRS JAMES COOK cruise JC228, Guatemala Basin, Eastern Pacific Ocean. Ancillary_navigational_metadata_from_seismic_processed_data_Ocean_Bottom_Seismometer_working_area_dataset_profile_P200e_during_RRS_JAMES_COOK_cruise_JC228.zip
Funding:
Federal Ministry of Education and Research (BMBF), grant/award no. 03G0295OA: SO-OFEG - GUATOPS; IODP preliminary investigations on Moho in the Guatemala Basin; Project: Seismic images
NERC National Capability Funding, grant/award no. NE/M021246/1: From Ridge to Trench, MoHole to Bend-Faults
Coverage:
Median Latitude: 9.926338 * Median Longitude: -87.757907 * South-bound Latitude: 9.096300 * West-bound Longitude: -88.772100 * North-bound Latitude: 10.560900 * East-bound Longitude: -86.978700
Event(s):
JC228_P200_OBS223 * Latitude: 9.096300 * Longitude: -88.772100 * Campaign: JC228 * Basis: James Cook * Method/Device: Ocean bottom seismometer (OBS) * Comment: Event coordinates refer to the OBS deployment position
JC228_P200_OBS224 * Latitude: 9.139700 * Longitude: -88.719300 * Campaign: JC228 * Basis: James Cook * Method/Device: Ocean bottom seismometer (OBS) * Comment: Event coordinates refer to the OBS deployment position
JC228_P200_OBS225 * Latitude: 9.183200 * Longitude: -88.666000 * Campaign: JC228 * Basis: James Cook * Method/Device: Ocean bottom seismometer (OBS) * Comment: Event coordinates refer to the OBS deployment position
Comment:
The data are provided in SEG-Y format (reduced with 6 km/s and recording time starting at -1 s). Each uploaded file (144 files in total) consists of the airgun shots recorded with the individual Ocean-Bottom-Seismometers (OBS).
The naming convention is as follows using one file p200.obs264.1.sgy as an example:
p200: profile name of JC228 survey
obs264: OBS-station number (from 228 to 264)
1: channel number (1, 2, 3, 4)
sgy: data type
Each segy-data file has header-information set that can be used for plotting and analyses:
trace-count (tracr, byte : 1) shotpoint number (byte: 17-20)
shot X coordinate (sx, byte :73-76, coordinate: latitude x 360000)
shot Y coordinate (sy, byte: 77-80, coordinate: longitude x 360000)
OBS X coordinate (gx, byte: 81-84, coordinate: latitude x 360000)
OBS Y coordinate (gy, byte: 85-88, oordinate: longitude x 360000)
Shot point navigation (latitude, longitude, shot_number): JC228_p200e_shot_navigation.dat
OBS coordinates (latitude, longitude, obs_number): JC228_p200e_obs_locations.dat
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Grevemeyer, Ingo | |||
| 2 | Binary Object | Binary | Grevemeyer, Ingo | |||
| 3 | Binary Object (Media Type) | Binary (Type) | Grevemeyer, Ingo | |||
| 4 | Binary Object (MD5 Hash) | Binary (Hash) | Grevemeyer, Ingo | |||
| 5 | Binary Object (File Size) | Binary (Size) | Bytes | Grevemeyer, Ingo | ||
| 6 | File content | Content | Grevemeyer, Ingo | Ocean bottom seismometer (OBS) |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)
Size:
336 data points
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Datasets with similar metadata
- Henstock, TJ; Grevemeyer, I; Robinson, A (in review): Seismic processed data (Ocean Bottom Seismometer working area dataset, profile P200w) during RRS JAMES COOK cruise JC228, Guatemala Basin, North Pacific Ocean. https://doi.pangaea.de/10.1594/PANGAEA.977816
- Grevemeyer, I; Henstock, TJ; Dannowski, A et al. (2025): Seismic processed data (Ocean Bottom Seismometer working area dataset, profile P400) during RRS JAMES COOK cruise JC228, Guatemala Basin, North Pacific Ocean. https://doi.org/10.1594/PANGAEA.974808
- Grevemeyer, I; Henstock, TJ; Dannowski, A et al. (2025): Seismic processed data (Ocean Bottom Seismometer working area dataset, profile P300) during RRS JAMES COOK cruise JC228, Guatemala Basin, North Pacific Ocean. https://doi.org/10.1594/PANGAEA.974799