[Parameters: Topic='AGRICULTURE', Term='SOILS', Variable_Level_1='SOIL TEMPERATURE']
Seasonal frost and soil temperature data, Western Cape Mountains, South AfricaEntry ID: GGD482
Abstract: Micro-climatic monitoring of air and ground was started in 1990 to evaluate climatic controls on the present-day diurnal soil frost environment in the Western Cape mountains of South Africa. To this effect two data logger stations were established in the summit region of the Waaihoek mountains. Two sites were established at Waaihoek Peak and Mount Superior, respectively. Waaihoek Peak - The ... Waaihoek Peak monitoring site is positioned on the southeast extension of a small summit plateau at 1900m elevation where it changes into a southeast trending ridge flanked by two small valleys. The station stands on a 4 to 5 degree slope with an aspect of 140 degrees and is underlain by steeply dipping quartzitic sandstone of the Peninsula Formation. A shallow sandy soil here reaches a thickness of 0.35m and supports a sparse vegetation cover of Restio (Cape reeds) species up to 0.2m high with a total cover of around 30%. Initially both daily and hourly records were kept which necessitated frequent visits to replace the data storage tapes. As from 29-11-1992 only daily records were kept, including maximum and minimum temperature and 24 hour precipitation totals. Average daily soil moisture levels were recorded only as the range between daily maximum and minimum values proved to be minimal. Mount Superior - Field observations established the presence of active soil frost features near Mount Superior during December 1991. A second data logger site was consequently established by 1-5-1993 to provide microclimatic data from a site with a different substrate and currently active soil-frost processes. The Mount Superior station is positioned 5km SSE of the Waaihoek Peak site on a flat summit plateau of Cedarberg shale at 1860m elevation. The surface cover is comprised of fractured bedrock and bare shallow soil with tussocks of Restio spp. up to 0.5m high. Daily maximum and minimum temperature were recorded for each sensor as well as daily average relative soil moisture levels and daily precipitation totals. These data are presented on the CAPS Version 1.0 CD-ROM, June 1998.
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Data Set Citation
Dataset Originator/Creator: Boelhouwers, J
Dataset Title: Seasonal frost and soil temperature data, Western Cape Mountains, South Africa
Dataset Release Date: 1998-01-01
Dataset Release Place: Boulder, Colorado USA
Dataset Publisher: NSIDC: National Snow and Ice Data CenterOnline Resource: http://nsidc.org/data/ggd482.html
Start Date: 1990-02-01
AGRICULTURE > SOILS > SOIL MOISTURE/WATER CONTENT
AGRICULTURE > SOILS > SOIL STRUCTURE
AGRICULTURE > SOILS > SOIL TEMPERATURE
CRYOSPHERE > FROZEN GROUND > SEASONALLY FROZEN GROUND
CRYOSPHERE > FROZEN GROUND > SOIL TEMPERATURE
CRYOSPHERE > SNOW/ICE > FREEZE/THAW
LAND SURFACE > FROZEN GROUND > SEASONALLY FROZEN GROUND
LAND SURFACE > FROZEN GROUND > SOIL TEMPERATURE
LAND SURFACE > SOILS > SOIL MOISTURE/WATER CONTENT
LAND SURFACE > SOILS > SOIL STRUCTURE
LAND SURFACE > SOILS > SOIL TEMPERATURE
TERRESTRIAL HYDROSPHERE > SNOW/ICE > FREEZE/THAW
ISO Topic Category
Distribution Media: FTP
Distribution Format: ASCII Text
Phone: +46 18 4712524
Fax: +46 18 555920
Email: jan.boelhouwers at natgeog.uu.se
Uppsala University Physical Geography, Department of Earth Sciences Villav. 16
Postal Code: 7535
Boelhouwers, J.,1995b, Present-day soil frost activity at Mt Superior, Hex River mountains, South Africa. Zeitschrift fuer Geomorphologie, 39(2), 237-248.
Boelhouwers, J.C., 1996: The present-day frost action environment and its geomorphological significance in the Western Cape mountains, South Africa, unpublished PhD thesis, Department of Earth Sciences, University of the Western Cape.
Boelhouwers, J., 1997a, Sediment movement by frost in the Hex River Mountains, South Africa, South African Geographical Journal, 97(2), 129-135.
Boelhouwers, J., 1997b, Environmental controls on diurnal soil frost activity in the Hex River Mountains, South Africa, Earth Surface Processes and Landforms, in press.
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 1998-01-01
Last DIF Revision Date: 2013-08-01