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Strasser, Michael; Ikehara, Ken; Everest, Jeremy D; Maeda, Lena; Hochmuth, Katharina; Grant, Hannah; Stewart, Margaret S; Sakurai, Noriaki; Yokoyama, Takahiro; Bao, Rui; Bellanova, Piero; Brunet, Morgane; Cai, Zhirong; Cattaneo, Antonio; Hsiung, Kan-Hsi; Huang, Jyh-Jaan Steven; Ishizawa, Tahashi; Itaki, Takuya; Jitsuno, Kana; Johnson, Joel E; Kanamatsu, Toshiya; Keep, Myra; Kioka, Arata; Kölling, Martin; Luo, Min; März, Christian; McHugh, Cecilia M G; Micallef, Aaron; Nagahashi, Yoshitaka; Pandey, Dhananjai K; Proust, Jean-Noël; Rasbury, Troy; Riedinger, Natascha; Satoguchi, Yasufumi; Sawyer, Derek E.; Seibert, Chloé; Silver, Maxwell; Straub, Susanne M; Virtasalo, Joonas J; Wang, Yong Hong; Wu, Ting-Wei; Zellers, Sarah D (2025): Headspace gas concentrations of IODP Hole 386-M0092D [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.975499

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Published: 2025-03-12 • DOI registered: 2025-04-19

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Abstract:
Headspace (HS) gas concentrations of the above given hole of International Ocean Discovery Program (IODP) Expedition 386 (Japan Trench Paleoseismology). The offshore phase of this expedition took place between 2021-04-13 and 2021-06-01 onboard Japanese R/V Kaimei from and to Yokosuka, Japan, followed by an onshore phase onboard D/V Chikyu between 2022-02-14 – 2022-03-15. Following standard protocols for headspace sampling, all headspace samples were collected onboard (offshore) from the base of each section immediately after section cutting following core recovery on deck. Two parallel headspace samples (IODP standard and requested samples) were collected from the bottom of every GPC core section, the longest core from each site, and the respective shorter trigger core. For each headspace double sample, ~5 cm³ of sediment was collected (using two 2.5 cm³ tip-cut syringes). Each 2.5 cm³ headspace sample was then added to a 20 mL crimp vial with 5 mL of 1 M NaOH. After sealing, the samples were preserved at 4°C until analysis.
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):
Ethane; Headspace Gas; International Ocean Discovery Program (IODP); IODP; Japan Trench; Methane concentration
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
Project(s):
Integrated Ocean Drilling Program / International Ocean Discovery Program (IODP)
Coverage:
Latitude: 36.911050 * Longitude: 143.423850
Date/Time Start: 2021-05-25T00:00:00 * Date/Time End: 2021-05-25T00:00:00
Minimum DEPTH, sediment/rock: 0.825 m * Maximum DEPTH, sediment/rock: 35.815 m
Event(s):
386-M0092D (JTPS-06B)  * Latitude: 36.911050 * Longitude: 143.423850 * Date/Time Start: 2021-05-25T00:00:00 * Date/Time End: 2021-05-25T00:00:00 * Elevation: -7700.0 m * Location: Japan Trench * Campaign: Exp386 * Basis: Kaimei * Method/Device: Giant piston corer (GPC) * Comment: IGSN: IBCR0386EHA6001. Comment: 40 m. Location: applied ship'sposition due to malfunctioning GPC transponder.
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
1 Event labelEvent
2 Sample code/labelSample labelDSDP/ODP/IODP sample designation
3 Proposed International Geo Sample NumberProp IGSN
4 DEPTH, sediment/rockDepth sedmGeocode
5 MethaneCH4ppmvGas chromatography, Agilent Technologies, 7890A; injected (split mode) into an Agilent 7890B gas chromatograph equipped with HP PLOT-Q column
6 EthaneC2H6ppmvGas chromatography, Agilent Technologies, 7890A; injected (split mode) into an Agilent 7890B gas chromatograph equipped with HP PLOT-Q column
7 C1/C2 hydrocarbon ratioC1/C2Gas chromatography, Agilent Technologies, 7890A; injected (split mode) into an Agilent 7890B gas chromatograph equipped with HP PLOT-Q column
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
350 data points

Data

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

1 
Event		2 
Sample label		3 
Prop IGSN		4 
Depth sed [m]		5 
CH4 [ppmv]		6 
C2H6 [ppmv]		7 
C1/C2
386-M0092D 386-M0092D-1H-1,82.5-86.5IBCR0386EX5GE010.8251320.388339
386-M0092D386-M0092D-1H-1,82.5-86.5IBCR0386EX6GE010.8251320.388339
386-M0092D386-M0092D-1H-2,97.5-101.5IBCR0386EX7GE011.8403090.685451
386-M0092D386-M0092D-1H-2,97.5-101.5IBCR0386EX8GE011.8403090.685451
386-M0092D386-M0092D-1H-3,97-101IBCR0386EX9GE012.8503970.711559
386-M0092D386-M0092D-1H-3,97-101IBCR0386EXAGE012.8503970.711559
386-M0092D386-M0092D-1H-4,96.5-100.5IBCR0386EXBGE013.8552430.539452
386-M0092D386-M0092D-1H-4,96.5-100.5IBCR0386EXCGE013.8552430.539452
386-M0092D386-M0092D-1H-5,97-101IBCR0386EXDGE014.8652960.524564
386-M0092D386-M0092D-1H-5,97-101IBCR0386EXEGE014.8652960.524564
386-M0092D386-M0092D-1H-6,96.5-100.5IBCR0386EXFGE015.8703100.378819
386-M0092D386-M0092D-1H-6,96.5-100.5IBCR0386EXGGE015.8703100.378819
386-M0092D386-M0092D-1H-7,97-101IBCR0386EXHGE016.8804730.3541335
386-M0092D386-M0092D-1H-7,97-101IBCR0386EXIGE016.8804730.3541335
386-M0092D386-M0092D-1H-8,97-101IBCR0386EXJGE017.8908080.4411831
386-M0092D386-M0092D-1H-8,97-101IBCR0386EXKGE017.8908080.4411831
386-M0092D386-M0092D-1H-9,96.5-100.5IBCR0386EXLGE018.89518730.4693996
386-M0092D386-M0092D-1H-9,96.5-100.5IBCR0386EXMGE018.89518730.4693996
386-M0092D386-M0092D-1H-10,96-100IBCR0386EXNGE019.89527030.7433636
386-M0092D386-M0092D-1H-10,96-100IBCR0386EXOGE019.89527030.7433636
386-M0092D386-M0092D-1H-11,96.5-100.5IBCR0386EXPGE0110.90044600.5865998
386-M0092D386-M0092D-1H-11,96.5-100.5IBCR0386EXQGE0110.90044600.5865998
386-M0092D386-M0092D-1H-12,97-101IBCR0386EXRGE0111.91053590.8149143
386-M0092D386-M0092D-1H-12,97-101IBCR0386EXSGE0111.91053590.8149143
386-M0092D386-M0092D-1H-13,96.5-100.5IBCR0386EXTGE0112.91567340.9558269
386-M0092D386-M0092D-1H-13,96.5-100.5IBCR0386EXUGE0112.91567340.9558269
386-M0092D386-M0092D-1H-14,97-101IBCR0386EXVGE0113.92587090.8569124
386-M0092D386-M0092D-1H-14,97-101IBCR0386EXWGE0113.92587090.8569124
386-M0092D386-M0092D-1H-15,96-100IBCR0386EXXGE0114.92575640.7468840
386-M0092D386-M0092D-1H-15,96-100IBCR0386EXYGE0114.92575640.7468840
386-M0092D386-M0092D-1H-16,98-102IBCR0386EXZGE0115.945102030.78813668
386-M0092D386-M0092D-1H-16,98-102IBCR0386EX0HE0115.945102030.78813668
386-M0092D386-M0092D-1H-17,99-103IBCR0386EX1HE0116.975131140.85416648
386-M0092D386-M0092D-1H-17,99-103IBCR0386EX2HE0116.975131140.85416648
386-M0092D386-M0092D-1H-18,98.5-102.5IBCR0386EX3HE0118.000127081.10214883
386-M0092D386-M0092D-1H-18,98.5-102.5IBCR0386EX4HE0118.000127081.10214883
386-M0092D386-M0092D-1H-19,101-105IBCR0386EX5HE0119.05087200.8627913
386-M0092D386-M0092D-1H-19,101-105IBCR0386EX6HE0119.05087200.8627913
386-M0092D386-M0092D-1H-20,98.5-102.5IBCR0386EX7HE0120.075158820.78118433
386-M0092D386-M0092D-1H-20,98.5-102.5IBCR0386EX8HE0120.075158820.78118433
386-M0092D386-M0092D-1H-21,101-105IBCR0386EX9HE0121.125167700.96621472
386-M0092D386-M0092D-1H-21,101-105IBCR0386EXAHE0121.125167700.96621472
386-M0092D386-M0092D-1H-22,100.5-104.5IBCR0386EXBHE0122.170151640.97215698
386-M0092D386-M0092D-1H-22,100.5-104.5IBCR0386EXCHE0122.170151640.97215698
386-M0092D386-M0092D-1H-23,101.5-105.5IBCR0386EXDHE0123.225199931.21825599
386-M0092D386-M0092D-1H-23,101.5-105.5IBCR0386EXEHE0123.225199931.21825599
386-M0092D386-M0092D-1H-24,101.5-105.5IBCR0386EXFHE0124.280249151.13425793
386-M0092D386-M0092D-1H-24,101.5-105.5IBCR0386EXGHE0124.280249151.13425793
386-M0092D386-M0092D-1H-25,98.5-102.5IBCR0386EXHHE0125.305180301.14818555
386-M0092D386-M0092D-1H-25,98.5-102.5IBCR0386EXIHE0125.305180301.14818555
386-M0092D386-M0092D-1H-26,102.5-106.5IBCR0386EXJHE0126.370243131.06319957
386-M0092D386-M0092D-1H-26,102.5-106.5IBCR0386EXKHE0126.370243131.06319957
386-M0092D386-M0092D-1H-27,99.5-103.5IBCR0386EXLHE0127.405261101.23923032
386-M0092D386-M0092D-1H-27,99.5-103.5IBCR0386EXMHE0127.405261101.23923032
386-M0092D386-M0092D-1H-28,99.5-103.5IBCR0386EXNHE0128.440217140.98818912
386-M0092D386-M0092D-1H-28,99.5-103.5IBCR0386EXOHE0128.440217140.98818912
386-M0092D386-M0092D-1H-29,101.5-105.5IBCR0386EXPHE0129.495204101.31419198
386-M0092D386-M0092D-1H-29,101.5-105.5IBCR0386EXQHE0129.495204101.31419198
386-M0092D386-M0092D-1H-30,102.5-106.5IBCR0386EXRHE0130.56086801.7647007
386-M0092D386-M0092D-1H-30,102.5-106.5IBCR0386EXSHE0130.56086801.7647007
386-M0092D386-M0092D-1H-31,101.5-105.5IBCR0386EXTHE0131.615241012.01524388
386-M0092D386-M0092D-1H-31,101.5-105.5IBCR0386EXUHE0131.615241012.01524388
386-M0092D386-M0092D-1H-32,99.5-103.5IBCR0386EXVHE0132.650193571.74214729
386-M0092D386-M0092D-1H-32,99.5-103.5IBCR0386EXWHE0132.650193571.74214729
386-M0092D386-M0092D-1H-33,102-106IBCR0386EXXHE0133.710202362.04611470
386-M0092D386-M0092D-1H-33,102-106IBCR0386EXYHE0133.710202362.04611470
386-M0092D386-M0092D-1H-34,102-106IBCR0386EXZHE0134.770153811.5817633
386-M0092D386-M0092D-1H-34,102-106IBCR0386EX0IE0134.770153811.5817633
386-M0092D386-M0092D-1H-35,100.5-104.5IBCR0386EX1IE0135.815120831.8896849
386-M0092D386-M0092D-1H-35,100.5-104.5IBCR0386EX2IE0135.815120831.8896849