2024-03-28T12:36:29Zhttp://doidb.wdc-terra.org/oaip/oaioai:doidb.wdc-terra.org:8852016-11-25T15:11:43ZDOIDBDOIDB.SDDB
10.1594/GFZ.SDDB.1102
Dannowski, Grit
Schrötter, Jörg
Erbas, Kemal
Förster, Andrea
Huenges, Ernst
Borehole Temperature of HSDP-2-A on 07/05/1999
Deutsches GeoForschungsZentrum GFZ
2007
Hawaii Scientific Drilling Project
Land based
Distributed Optical Fibre Temperature Sensing
temperature_07/05/99_02:44am
temperature_07/05/99_07:22am
2007-10-09
eng
Dataset
http://dx.doi.org/10.1016/S0040-1951(03)00197-5
The temperature pattern is attributed to a superposition of thermal and hydraulic processes. In the deeper borehole (HSDP-2, depth 3.1 km) detailed temperature monitoring was performed. Temperature measurements reveal two different thermal regimes. The upper part is characterised by cold temperatures and a negative temperature gradient similar to those observed in the shallow pilot borehole. Below 1100 m, increasing temperatures are observed. Different processes, such as topographically driven groundwater flow, ingress of salt water and conductive previous termheatnext term flow are investigated by numerical modeling. A pure conductive scenario fails to match the temperature measurements, implying that both borehole sections are overprinted by advective conditions. Coupled fluid and previous termheatnext term flow modeling with solute transport yield results that agree with observed temperatures. These data were taken at 07/05/1999 from 02.30 a.m. to 07.30 a.m.
19.74 -155.05