Grevemeyer, Ingo; Henstock, Timothy J; Dannowski, Anke (2025): Seismic processed data (Ocean Bottom Seismometer working area dataset, profile P100) during RRS JAMES COOK cruise JC228, Guatemala Basin, North Pacific Ocean [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.974489
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Published: 2025-02-03 • DOI registered: 2025-03-28
Abstract:
The data comprise processed active-source seismic data acquired with ocean bottom seismometer (OBS) along profile p100. The data were collected in the Guatemala Basin of the Eastern Pacific Ocean during the joint German/British expedition JC228 of the research vessel RRS JAMES COOK in December of 2022. The data set consists of 12 OBS stations deployed at an interval of 7 km receiving shots of a tuned 5000 cubi-inch airgun array, fired at 90 s interval, along a 115 km long profile. The seismic line crosses Ocean Drilling Program Hole 1256D. Each OBS consists of 4 channels (channel 1: hydrophone; channel 2: horizontal component 1; channel 3: horizontal component 2; channel 4: vertical component).
Keyword(s):
Related to:
Grevemeyer, Ingo; Henstock, Timothy J; Dannowski, Anke; Li, Yuhan: Ancillary navigational metadata from seismic processed data (Ocean Bottom Seismometer working area dataset, profile P100) 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_P100_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: 6.740992 * Median Longitude: -91.938867 * South-bound Latitude: 6.482600 * West-bound Longitude: -92.175600 * North-bound Latitude: 6.994700 * East-bound Longitude: -91.697000
Event(s):
JC228_P100_OBS101 * Latitude: 6.994700 * Longitude: -92.175600 * Campaign: JC228 * Basis: James Cook * Method/Device: Ocean bottom seismometer (OBS) * Comment: Event coordinates refer to the OBS deployment position
JC228_P100_OBS102 * Latitude: 6.948100 * Longitude: -92.134400 * Campaign: JC228 * Basis: James Cook * Method/Device: Ocean bottom seismometer (OBS) * Comment: Event coordinates refer to the OBS deployment position
JC228_P100_OBS103 * Latitude: 6.902200 * Longitude: -92.090600 * 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 (48 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 p100.obs101.1.sgy as an example:
p100: profile name of JC228 survey
obs01: OBS-station number (from 101 to 112)
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, coordinate: longitude x 360000)
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 (File Size) | Binary (Size) | Bytes | Grevemeyer, Ingo | ||
| 4 | Binary Object (Media Type) | Binary (Type) | Grevemeyer, Ingo | |||
| 5 | Binary Object (MD5 Hash) | Binary (Hash) | Grevemeyer, Ingo | |||
| 6 | File content | Content | Grevemeyer, Ingo | Ocean bottom seismometer (OBS) |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)
Size:
96 data points