Borehole Temperature of HSDP-2-A on 04/19/1999

DOI

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.

Identifier
DOI https://doi.org/10.1594/GFZ.SDDB.1104
Metadata Access http://doidb.wdc-terra.org/oaip/oai?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:doidb.wdc-terra.org:179
Provenance
Creator Dannowski, Grit; Schrötter, Jörg; Erbas, Kemal; Förster, Andrea; Huenges, Ernst
Publisher Deutsches GeoForschungsZentrum GFZ
Publication Year 2008
OpenAccess true
Contact www.icdp-online.org/contact
Representation
Language English
Resource Type Dataset
Format text/tab-separated-values
Size 7029 DataPoints
Discipline Scientific drilling
Spatial Coverage (-155.050 LON, 19.740 LAT)