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PANGAEA.
Data Publisher for Earth & Environmental Science
Abstract:
Moisture and density (MAD) data from discrete samples from the above given hole of International Ocean Discovery Program (IODP) Expedition 389 (Hawaiian Drowned Reefs). MAD measurements were performed on the same samples as P-wave velocity (the same sample was used for both measurements). These discrete samples were taken during the onshore phase of expedition 389, which took place between 2025-02-06 to 2025-02-26 at the Bremen Core Repository (BCR) hosted at MARUM – Center for Marine Environmental Sciences, University of Bremen. Where core quality allowed cylindrical plugs were drilled perpendicular to the split core surface at an interval of one sample per core (approx. every 1.5 meter). MAD properties (bulk density, dry density, grain density, water content, porosity, and void ratio) were determined from measurements of the wet and dry mass of the sampled core plugs as well as their dry volumes. Drying took place in a convection oven at 105°±5°C for 24 hours.
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: 20.036388 * Longitude: -156.065720
Date/Time Start: 2023-09-05T00:00:00 * Date/Time End: 2023-09-05T00:00:00
Minimum DEPTH, sediment/rock: 1.52 m * Maximum DEPTH, sediment/rock: 1.52 m
Event(s):
389-M0096A (KAW-06Ab) * Latitude: 20.036388 * Longitude: -156.065720 * Date/Time Start: 2023-09-05T00:00:00 * Date/Time End: 2023-09-05T00:00:00 * Elevation: -740.8 m * Location: Hawaii, USA * Campaign: Exp389 (Hawaiian Drowned Reefs (HDR)) * Basis: MMA Valour * Method/Device: Benthic Portable Remotely Operated Drill (PROD5) * Comment: IGSN: IBCR0389EH55101. Spatial reference system (SRS): 4326. Comment: LAT water depth: 740.2m. Borehole abandoned due to technical issues.
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
5Density, wet bulkWBDg/cm3Calculated according to Webster et al. (2025)
6Density, dry bulkDBDg/cm3Calculated according to Webster et al. (2025)
7Density, grainDensity graing/cm3Calculated according to Webster et al. (2025)
8PorosityPoros% volCalculated according to Webster et al. (2025)
9Water content, dry massWater dm%see commentElectric balance system with an acceptable accuracy within ± 0.005 g
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
7 data points

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