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PANGAEA.
Data Publisher for Earth & Environmental Science
Abstract:
P-wave velocity data from discrete samples from the above given hole of International Ocean Discovery Program (IODP) Expedition 386 (Japan Trench Paleoseismology). During the onshore phase of expedition 386, which took place between 2022-02-14 – 2022-03-15 onboard D/V Chikyu, discrete samples for P-wave velocity measurements were taken from the work halves approx. every 2 meter down core using syringes with an inner diameter of 2 cm. Samples measured 2.5–3 cm long for a sample volume of ~10 cubic centimetres. Samples were then shipped to the European Petrophysics Consortium (EPC) laboratory at the University of Leicester (UK) for processing. Measurements were performed with a Geotek P-wave logger for discrete samples (PWL-D). Measurements were attempted for each sample, however, the unconsolidated lithology of some samples proved unsuitable for the instrument (e.g. too soupy or too friable to be placed between the transducers).
Operator notes: Data from section numbers > 30 can be associated to a decrease in velocity values, this is likely due to cracks opening in the samples when applying pressure on it at the time of measurement (as observed by operators). For holes M0081E & F Sections 1-29 velocity values are overestimated due to an issue with the calibration.
For further methodological information see methods chapter in Strasser, M. et al., 2023 https://doi.org/10.14379/iodp.proc.386.102.2023
Keyword(s):
International Ocean Discovery Program (IODP); IODP; Japan Trench; P-wave velocity
Related to:
Strasser, Michael; Ikehara, Ken; Everest, Jeremy D; IODP Expedition 386 Scientists (2023): Japan Trench Paleoseismology. Proceedings of the International Ocean Discovery Program, International Ocean Discovery Program, 386, https://doi.org/10.14379/iodp.proc.386.2023
Coverage:
Latitude: 38.720467 * Longitude: 144.125133
Date/Time Start: 2021-05-10T00:00:00 * Date/Time End: 2021-05-10T00:00:00
Minimum DEPTH, sediment/rock: 0.850 m * Maximum DEPTH, sediment/rock: 36.310 m
Event(s):
386-M0089D (JTPC-04B)  * Latitude: 38.720467 * Longitude: 144.125133 * Date/Time Start: 2021-05-10T00:00:00 * Date/Time End: 2021-05-10T00:00:00 * Elevation: -7607.0 m * Location: Japan Trench * Campaign: Exp386 * Basis: Kaimei * Method/Device: Giant piston corer (GPC) * Comment: IGSN: IBCR0386EH05001. Comment: 40 m
Comment:
Data was submitted and proofread by Vera Barbara Bender, MARUM - Center for Marine Environmental Sciences (University Bremen) on behalf of ECORD Science Operator Data Management (https://www.ecord.org).
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
Event labelEvent
Sample code/labelSample labelDSDP/ODP/IODP sample designation
DEPTH, sediment/rockDepth sedmGeocode
Velocity, compressional waveVpm/sP-wave logger for discrete samples (PWL-D), GEOTEK
Proposed International Geo Sample NumberProp IGSN
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
51 data points

Data

Download dataset as tab-delimited text — use the following character encoding:


Event

Sample label

Depth sed [m]

Vp [m/s]

Prop IGSN
386-M0089D 386-M0089D-1H-1,85.0-87.00.8501635IBCR0386EXJ4G01
386-M0089D386-M0089D-1H-3,85.0-87.02.8651577IBCR0386EXK4G01
386-M0089D386-M0089D-1H-5,35.0-37.04.6351619IBCR0386EXCFG01
386-M0089D386-M0089D-1H-7,85.0-87.06.9001658IBCR0386EXM4G01
386-M0089D386-M0089D-1H-9,85.0-87.08.9201605IBCR0386EXN4G01
386-M0089D386-M0089D-1H-11,85.0-87.010.9401638IBCR0386EXO4G01
386-M0089D386-M0089D-1H-13,85.0-87.012.9701658IBCR0386EXP4G01
386-M0089D386-M0089D-1H-15,85.0-87.015.0251634IBCR0386EXQ4G01
386-M0089D386-M0089D-1H-17,85.0-87.017.1251619IBCR0386EXR4G01
386-M0089D386-M0089D-1H-19,85.0-87.019.2251590IBCR0386EXS4G01
386-M0089D386-M0089D-1H-21,85.0-87.021.3451696IBCR0386EXT4G01
386-M0089D386-M0089D-1H-23,85.0-87.023.4951567IBCR0386EXU4G01
386-M0089D386-M0089D-1H-25,85.0-87.025.6051633IBCR0386EXV4G01
386-M0089D386-M0089D-1H-27,85.0-87.027.8001590IBCR0386EXW4G01
386-M0089D386-M0089D-1H-29,85.0-87.029.9151584IBCR0386EX8FG01
386-M0089D386-M0089D-1H-31,85.0-87.032.0951616IBCR0386EX9FG01
386-M0089D386-M0089D-1H-35,85.0-87.036.3101626IBCR0386EXBFG01