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Kaul, Norbert (2025): Marine heat flow data in the Guatemala basin, obtained during the GUATOPS project 2022/23 [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.959607

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Published: 2025-02-01 • DOI registered: 2025-03-01

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Abstract:
We measure subbottom temperature profiles at 66 new locations in the Guatemala Basin using MTL temperature sensors, mounted onto a gravity core barrel. Thermal conductivity values were measured on core material of 13 cores using a KD2 Pro needle probe. Heat flow values for 64 of the sites could be derived, showing a regime of very low geothermal heat flow, far below the expected values. there is a distinct boundary between low values north of 9°55'N and elevated values southward. The data were collected during research cruise JC228a, 13.-22. January 2023. The loction is offshore Costa Rica in the Pacific Ocean near 87°W, 10°N in the so called Guatemala Basin. Investigation of the subducting and bending oceanic plate, especially the cooling effect by circulating groundwater was one of the targets. A gravity corer of 6 m was equipped with 6 Miniaturized Temperature Logger (MTL). Vessel: James Cook on Cruise JF228a. The Project names are GUATOPS and GUATOPSheat for the heat flow survey.
Keyword(s):
Guatemala Basin; MTL; Outrigger temperature sensors; temperature gradient; Thermal conductivity
Funding:
Federal Ministry of Education and Research (BMBF), grant/award no. 03G0295OB: GUATOPSheat
Coverage:
Median Latitude: 10.111301 * Median Longitude: -87.074900 * South-bound Latitude: 9.782800 * West-bound Longitude: -87.365817 * North-bound Latitude: 10.401800 * East-bound Longitude: -86.676383
Date/Time Start: 2023-01-15T03:44:00 * Date/Time End: 2023-01-18T10:51:00
Event(s):
JC228A_HF_09 (HF2309) * Latitude: 9.851917 * Longitude: -86.789783 * Date/Time: 2023-01-18T10:51:00 * Elevation: -3191.0 m * Location: Pacific Ocean * Campaign: JC228A * Basis: James Cook * Method/Device: Heat-Flow probe (HF)
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
10 datasets

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Datasets listed in this bundled publication

  1. Kaul, N (2025): Marine heat flow data at station HF2301 in the Guatemala basin. https://doi.org/10.1594/PANGAEA.959597
  2. Kaul, N (2025): Marine heat flow data at station HF2302 in the Guatemala basin. https://doi.org/10.1594/PANGAEA.959599
  3. Kaul, N (2025): Marine heat flow data at station HF2303 in the Guatemala basin. https://doi.org/10.1594/PANGAEA.959600
  4. Kaul, N (2025): Marine heat flow data at station HF2304 in the Guatemala basin. https://doi.org/10.1594/PANGAEA.959601
  5. Kaul, N (2025): Marine heat flow data at station HF2305 in the Guatemala basin. https://doi.org/10.1594/PANGAEA.959602
  6. Kaul, N (2025): Marine heat flow data at station HF2306 in the Guatemala basin. https://doi.org/10.1594/PANGAEA.959603
  7. Kaul, N (2025): Marine heat flow data at station HF2307 in the Guatemala basin. https://doi.org/10.1594/PANGAEA.959604
  8. Kaul, N (2025): Marine heat flow data at station HF2308 in the Guatemala basin. https://doi.org/10.1594/PANGAEA.959605
  9. Kaul, N (2025): Marine heat flow data at station HF2309 in the Guatemala basin. https://doi.org/10.1594/PANGAEA.959606
  10. Kaul, N (2025): Summarized list of all heat flow determinations on RV JAMES COOK cruise JC228A. https://doi.org/10.1594/PANGAEA.959618