2024-03-28T10:00:38Zhttp://nsidc.org/api/dataset/metadata/oaioai:nsidc.org/GGD280.0012024-02-26T18:16:03Zv0_otherv0_allfgdc
GGD280.001Rock glaciers, Central Andes, ArgentinaTrombotto, D. and E. BukRock glaciers, Central Andes, Argentina1998-01-01Boulder, Colorado USANSIDC: National Snow and Ice Data Center1false10.7265/hnfj-eb25https://doi.org/10.7265/hnfj-eb25GGD280InvestigatorDarioTrombottodtrombot@lab.cricyt.edu.ar054-61-287029054-061-380370Bajada del Cerro s/n, Cassilla de Correo 330Mendoza5500ArgentinaInvestigatorE.Bukgeocrio@ianigl.edu.aar054 061 274011CC 330Mendoza5500ArgentinaEARTH SCIENCECryosphereFrozen GroundActive Layer ACTIVE LAYEREARTH SCIENCELand SurfaceFrozen GroundActive Layer ACTIVE LAYEREARTH SCIENCECryosphereFrozen GroundPeriglacial Processes PERIGLACIAL PROCESSESEARTH SCIENCELand SurfaceFrozen GroundPeriglacial Processes PERIGLACIAL PROCESSESEARTH SCIENCECryosphereFrozen GroundPermafrost PERMAFROSTEARTH SCIENCELand SurfaceFrozen GroundPermafrost PERMAFROSTEARTH SCIENCECryosphereFrozen GroundRock Glaciers ROCK GLACIERSEARTH SCIENCELand SurfaceFrozen GroundRock Glaciers ROCK GLACIERSEARTH SCIENCECryosphereFrozen GroundSoil Temperature SOIL TEMPERATUREEARTH SCIENCELand SurfaceFrozen GroundSoil Temperature SOIL TEMPERATUREActive LayerHydrologyMeteorologyPeriglacial ProcessesPermafrost FeaturesPermafrost PropertiesRock Glaciers1980-01-011993-12-31-32.983-32.9-69.45-69.25ContinentSouth AmericaArgentinaCentral Andes, Morenas Coloradas and El Salto Basin,EnglishFGDCFrozen Ground Data Centerhttp://nsidc.org/fgdc/Data Center ContactFGDCUser Servicesnsidc@nsidc.org1-303-492-61991-303-492-2468National Snow and Ice Data CenterCIRES, 449 UCBUniversity of ColoradoBoulderCO80309-0449USAFTPASCIIBarsch, D and Happoldt, H. (1985). Blockgletscherbildung and
holozene Hhenstufengliederung in den mendozinischen Anden,
Argentinien. Zentralblatt fuer Geologie und Palaeontologie, 1
(11/12): 1625-1632.
Barsch, D and King, L. (1989). Origin and geoelectrical
resistivity of rockglaciers in semiarid subtropical mountains,
Andes of Mendoza, Argentina. Zeitschrift fuer Geomorfologie, N.
F., 33 (2): 151-163.
Buk, E. (1983). Glaciares de escombros y su significacion
hidrologica. Acta Geocrioginica, no. 1: 22-38, Mendoza.
Buk, E. (1987). Hydrochemestry of rivers in mountain
permafrost at 33 degrees S, Mendoza, Argentina. V International
Conference on Permafrost, Trondheim, Norway, p. 294-298.
Trombotto, D., Buk, E, and Hernandez, J. (1997). Monitoring of
Mountain Permafrost in the Central Andes, Cordon del Plata,
Mendoza, Argentina. Permafrost and Periglacial Processes, Vol.8:123-129.Primary rock glaciers are fed by avalanche chutes. At the El Salto rock glacier, surveys have been undertaken in order to determine the creep rate. Between 1981 and 1986 temperatures at elevations between 3500 and 3600 m were measured in the active layer to a depth of 1 m with a multipoint temperature recorder (Grant). On the basis of these measurement Buk (1983) determined that the permafrost table was at a depth of about 3 m and the base of the permafrost at 68 m. Similar conclusions were reached by Barsch and King (1989). As an illustration of the importance of avalanches to these forms, the base camp there was destroyed by an avalanche in November 1983.
The surface of the basin of Morenas Coloradas is 54 square km, of which 10.4 square km is seasonally frozen ground. The remaining 60% of the surface is typically periglacial with rock glaciers as the most important forms. In the glacigenic rock glacier, the clean glacier ice ends in detritus-covered or morainic tongues which result in glacigenic ice being incorporated within the substrate. In this way, ice persists at lower altitudes and under very arid conditions (Lliboutry, 1986; Garleff and Stingl, 1986; Schrott, 1992). Interconnected rock glaciers are generated which undergo different phases of activity not always in agreement with those expected as a resulted of their elevations. That is, they continue to show signs of activity not only at the height of the present 0 degrees C air isotherm, but at lower elevations. In the last step downwards towards the valleys these rock glaciers become inactive, and finally morphologically relict or fossil rock glaciers are found. Meteorological, hydrological and geophysical measurements as well as 5 drillings to a depth of 5 m have been carried out in Morenas Coloradas. At an elevation of 3560 m the temperature oscillates around 0 degrees C (with a maximum variation of 0.5 degrees C) at depths between 4 and 5 m. The annual precipitation (1991-93) is 630 mm and the mean annual temperature is 1.6 degrees C. Using a calculated lapse rate of 0.52 degrees C per 100 m, the 0 degrees C isotherm occurs at approximately 3860 m, which represents a considerable rise in comparison with earlier years. It is assumed that this value is strongly influenced by climate warming in the 1980s and 1990s. Temperatures measured at different depths in Morenas Coloradas at 3560 m are positively correlated with the discharge of Rio Vallecitos (correlation coefficients of 0.8-0.9; significance p=0.01). There is no correlation with snowfall data, however, because of the influence of the 'zonda', a very dry and warm wind (up to 100 km/h) which impedes the accumulation of snow. Between 1978 and 1979, the zonda was active for more than 1000 hours. Discharge from the basin is of good quality and averages 505 l/s with a range from 230 l/s (early spring) to >1000 l/s (summer). In comparison, Schrott (1994) calculated the discharge of a rock glacier in the arid region of San Juan, Argentina to be only 5-8 l/s. These data are presented on the CAPS Version 1.0 CD-ROM, June 1998.VIEW RELATED INFORMATIONhttps://doi.org/10.7265/hnfj-eb25DocumentationGET DATAftp://sidads.colorado.edu/pub/DATASETS/fgdc/ggd280_rockglac_argentina/FTPCEOS IDN DIFVERSION 9.91998-01-012024-02-26NSIDCVersion SummaryNSIDCMinor VersionNSIDCCurrent Version1NSIDCLevel of ServiceBasicNSIDCFull Dataset Citation1998. <i>Rock glaciers, Central Andes, Argentina.</i> [indicate subset used]. Boulder, Colorado USA: National Snow and Ice Data Center. <a href="https://doi.org/10.7265/hnfj-eb25">https://doi.org/10.7265/hnfj-eb25</a>. [Date Accessed].NSIDCRetiredfalseNSIDCRelated Servicesapplication/vnd.nasa.cmr.umm+jsonfalsejroebuckmmt_service_12556S1962622169-NSIDCV0NSIDCV05service2023-04-25T21:20:48.786Zftp://sidads.colorado.edu/NSIDCV0_FTPNOT PROVIDED1FTP File SystemDownload data via FTP using an FTP client, command line utility or a script, e.g., Pythonhttps://nsidc.org/data/user-resources/help-center/how-access-data-using-ftp-client-command-line-wget-or-pythonVIEW RELATED INFORMATIONFTP Access GuidePublicationURLUSER SERVICESNSIDC User ServicesEmailnsidc@nsidc.orgDATA ACCESS/RETRIEVALDATA MANAGEMENT/DATA HANDLINGEARTH SCIENCE SERVICESThis is the most current release of this service. Last updated date is unknown.SERVICE PROVIDERNational Snow and Ice Data CenterNSIDCNational Snow and Ice Data Center home pagehttps://nsidc.org/National Snow and Ice Data Center home page.https://cdn.earthdata.nasa.gov/umm/service/v1.4UMM-S1.4ftp://sidads.colorado.edu/pub/DATASETS/fgdc/ggd280_rockglac_argentina/