Crutchley, Gareth J; Karstens, Jens; Elger, Judith; Kühn, Michel (2023): 3D multichannel seismic reflection processed data (P-Cable system with GI Gun) from RV POSEIDON cruise POS538, Kolumbo Volcano, Aegean Sea [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.960973
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Abstract:
Included here are 3D post-stack time migrated data from the Kolumbo Volcano in the Aegean Sea. The data were collected aboard RV Poseidon in 2019 during Research Cruise POS538 using GEOMAR's P-Cable seismic system. Seismic source was a Generator-Injector airgun fired in harmonic mode with generator and injector volumes of 45 cubic inches. The source was towed at a nominal depth of 2 m beneath the sea surface. Shot interval was 4 seconds at a ship speed of ~3.5 knots. Gun pressure was set at 200 bar. The receiver geometry consisted of 16 streamer sections attached to a 199 m long cross cable. Processing included: 3D geometry application, trace editing, static time corrections, anomalous amplitude attenuation, FK filtering, pre-stack trace interpolation, adaptive subtraction multiple suppression using a 1D pattern matching algorithm, sorting to common midpoint gathers, normal moveout correction (1517 m/s constant velocity), stacking, trace interpolation, 3D FK coherency filtering, 3D Stolt migration (1517 m/s constant velocity), residual 2D finite difference migration (first inline, then crossline). The dataset has a horizontal resolution of 3.125 m (bin size) and a dominant frequency of ~100 Hz. Acquisition and processing details are included in the EBCDIC header of the SEG-Y file.
Related to:
Karstens, Jens; Crutchley, Gareth J; Elger, Judith; Kühn, Michel; Schmid, Florian; Dalla Valle, Giacomo; Preine, Jonas; Nomikou, Paraskevi (2020): R/V Poseidon Cruise Report 538 - THESEUS Tsunami hazard of explosive submarine eruptions, 7th October - 28th October, 2019 Cartagena (Spain) - Heraklion (Greece). GEOMAR Helmholtz Centre for Ocean Research, Kiel, Germany, 106 pp, https://doi.org/10.3289/cr_pos538
Coverage:
Median Latitude: 36.531250 * Median Longitude: 25.475650 * South-bound Latitude: 36.480500 * West-bound Longitude: 25.411500 * North-bound Latitude: 36.582000 * East-bound Longitude: 25.539800
Date/Time Start: 2019-10-15T10:27:00 * Date/Time End: 2019-10-22T13:38:00
Minimum Elevation: -430.0 m * Maximum Elevation: -30.0 m
Event(s):
POS538_10-1 * Latitude Start: 36.480500 * Longitude Start: 25.411500 * Latitude End: 36.582000 * Longitude End: 25.539800 * Date/Time Start: 2019-10-15T10:27:00 * Date/Time End: 2019-10-22T13:38:00 * Elevation Start: -430.0 m * Elevation End: -30.0 m * Campaign: POS538 (THESEUS) * Basis: Poseidon * Method/Device: Seismic (SEIS) * Comment: 3D seismic cube
Comment:
Information required for loading the data (Note: All information required for loading the data is also provided in the EBCDIC header of the SEG-Y file.):
Data corners:
Corner 1: Inline=1020, Crossline=1000, X=357858.86 m Y=4047575.34 m
Corner 2: Inline=1020, Crossline=5210, X=367161.74 m Y=4038272.47 m
Corner 3: Inline=1954, Crossline=1000, X=359922.73 m Y=4049639.21 m
Corner 4: Inline=1020, Crossline=5210, X=369225.61 m Y=4040336.34 m
Coordinate system: WGS 84 UTM zone 35N: EPSG 32635
Inline and Crossline headers: Bytes 189-192 (inlines) and 193-196 (crosslines)
Coordinate headers: Bytes 181-184 (X coord) and Bytes 185-188 (Y coord). Coordinates in centimetres (COORD_SCALE = -100)
Trace length=1500 ms, Sample rate=1 ms, Total traces=3937285 (935 inlines x 4211 xlines)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | File content | Content | Crutchley, Gareth J | |||
| 2 | Binary Object | Binary | Crutchley, Gareth J | |||
| 3 | Binary Object (File Size) | Binary (Size) | Bytes | Crutchley, Gareth J | ||
| 4 | Binary Object (MD5 Hash) | Binary (Hash) | Crutchley, Gareth J |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Basic curation (CurationLevelB)
Size:
2 data points