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PANGAEA.
Data Publisher for Earth & Environmental Science
Abstract:
Results of interstitial water (IW) geochemistry analyses from the above given hole of International Ocean Discovery Program (IODP) Expedition 389 (Hawaiian Drowned Reefs). The offshore phase of this expedition took place between 2023-08-31 and 2023-10-31 onboard multipurpose vessel MMA Valour sailing from and to Barbers Point Harbor, Hawai'i, USA, followed by the onshore phase from 2025-02-06 to 2025-02-26 at the Bremen Core Repository (BCR) hosted at MARUM – Center for Marine Environmental Sciences, University of Bremen. Sampling for IW geochemistry took place offshore immediately upon core recovery where soft sediments where recovered and using Rhizon samplers. The Rhizone samplers were left in the sediment for extraction of interstitial water for a minimum of 2 hours, aiming at drawing enough IW per sample from the core sections to fulfill the IODP standard IW sample splitting plan that included as many eight fractions. In addition to IW from the core sections, reference samples of the surface seawater (SSW) were collected (s. dataset "Surface seawater geochemistry results of IODP Expedition 389 (Hawaiian Drowned Reefs)"). Quality flag "#0" indicates the measurements' result was below detection limit.
For further methodological information see methods chapter in Webster, J.M. et al., 2025 https://doi.org/10.14379/iodp.proc.389.2025
Keyword(s):
central Pacific; Coral Reef; Earth climate feedbacks; Earth history tipping points; Expedition 389; Hawaiian Drowned Reefs; Hawaiian geology; International Ocean Discovery Program (IODP); MMA Valour; Paleoclimate; sea level; volcanic
Coverage:
Latitude: 20.273832 * Longitude: -155.489799
Date/Time Start: 2023-10-05T00:00:00 * Date/Time End: 2023-10-07T00:00:00
Minimum DEPTH, sediment/rock: 0.98 m * Maximum DEPTH, sediment/rock: 22.90 m
Event(s):
389-M0101B (KOH-02Ac) * Latitude: 20.273832 * Longitude: -155.489799 * Date/Time Start: 2023-10-05T00:00:00 * Date/Time End: 2023-10-07T00:00:00 * Elevation: -932.0 m * Location: Hawaii, USA * Campaign: Exp389 (Hawaiian Drowned Reefs (HDR)) * Basis: MMA Valour * Method/Device: Benthic Portable Remotely Operated Drill (PROD5) * Comment: IGSN: IBCR0389EHX5101. Spatial reference system (SRS): 4326. Comment: LAT water depth: 931.6 m. Target depth reached
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
1Event labelEvent
2Sample code/labelSample labelDSDP/ODP/IODP sample designation
3Proposed International Geo Sample NumberProp IGSN
4DEPTH, sediment/rockDepth sedmGeocode – in mbsf
5SalinitySalDigital refractometer, KRÜSS GmbH, DR6200in psu
6pH, porewaterpH pwElectrode - Mettler Toledo, In-Lab 423 microcombination glass electrode + Radiometer TIM840 Autotitrator
7Alkalinity, totalATµmol/lRadiometer TIM840 Autotitrator
8Ammonium[NH4]+µmol/lPTFE tape gas separator technique
9ChlorideCl-mg/lIon-exchange-chromatography, Metrohm AG, 861 Advanced Compact ion chromatograph with sequential compression
10BromideBr-mg/lIon-exchange-chromatography, Metrohm AG, 861 Advanced Compact ion chromatograph with sequential compression
11Sulfate[SO4]2-mg/lIon-exchange-chromatography, Metrohm AG, 861 Advanced Compact ion chromatograph with sequential compression
12AluminiumAlmg/lInductively coupled plasma-optical emission spectrometry (ICP-OES) - Varian Inc., Vista-PRO Simultaneous ICP-OES
13BoronBmg/lInductively coupled plasma-optical emission spectrometry (ICP-OES) - Varian Inc., Vista-PRO Simultaneous ICP-OES
14BariumBamg/lInductively coupled plasma-optical emission spectrometry (ICP-OES) - Varian Inc., Vista-PRO Simultaneous ICP-OES
15CalciumCa2+mg/lInductively coupled plasma-optical emission spectrometry (ICP-OES) - Varian Inc., Vista-PRO Simultaneous ICP-OES
16IronFemg/lInductively coupled plasma-optical emission spectrometry (ICP-OES) - Varian Inc., Vista-PRO Simultaneous ICP-OES
17PotassiumK+mg/lInductively coupled plasma-optical emission spectrometry (ICP-OES) - Varian Inc., Vista-PRO Simultaneous ICP-OES
18LithiumLimg/lInductively coupled plasma-optical emission spectrometry (ICP-OES) - Varian Inc., Vista-PRO Simultaneous ICP-OES
19MagnesiumMg2+mg/lInductively coupled plasma-optical emission spectrometry (ICP-OES) - Varian Inc., Vista-PRO Simultaneous ICP-OES
20ManganeseMnmg/lInductively coupled plasma-optical emission spectrometry (ICP-OES) - Varian Inc., Vista-PRO Simultaneous ICP-OES
21SodiumNa+mg/lInductively coupled plasma-optical emission spectrometry (ICP-OES) - Varian Inc., Vista-PRO Simultaneous ICP-OES
22SulfurSmg/lInductively coupled plasma-optical emission spectrometry (ICP-OES) - Varian Inc., Vista-PRO Simultaneous ICP-OES
23SiliconSimg/lInductively coupled plasma-optical emission spectrometry (ICP-OES) - Varian Inc., Vista-PRO Simultaneous ICP-OES
24StrontiumSrmg/lInductively coupled plasma-optical emission spectrometry (ICP-OES) - Varian Inc., Vista-PRO Simultaneous ICP-OES
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
133 data points

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