dot
Detailansicht
Katalogkarte GBA
Katalogkarte ISBD
Suche präzisieren
Drucken
Download RIS
Hier klicken, um den Treffer aus der Auswahl zu entfernen
Titel Thermal log analysis for recognition of ground surface temperature change and water movements
VerfasserIn M. Verdoya, P. Chiozzi, V. Pasquale
Medientyp Artikel
Sprache Englisch
ISSN 1814-9324
Digitales Dokument URL
Erschienen In: Climate of the Past ; 3, no. 2 ; Nr. 3, no. 2 (2007-06-15), S.315-324
Datensatznummer 250000900
Publikation (Nr.) Volltext-Dokument vorhandencopernicus.org/cp-3-315-2007.pdf
 
Zusammenfassung
A joint analysis of surface air temperature series recorded at meteorological stations and temperature-depth profiles logged in nearby boreholes was performed to estimate conditions existing prior to the beginning of the instrumental record in central-northern Italy. The adopted method considers conductive and advective heat transport in a layered medium and provides simultaneous estimates of the pre-observational temperatures and the Darcy velocities. The reconstruction of the ground surface temperature history using a generalised least-squares inversion method was performed for boreholes where hydrological disturbances to measured temperature logs were proved negligible. Both methods revealed generally coherent climatic changes in the whole investigated area. Climatic conditions were generally warm and comparable with the reference period 1960–1990. The absence of the Little Ice Age seems to be a generic feature of the climate in central-northern Italy. Climate change of the 19th century was generally insignificant with well-balanced periods of cold and warmth. The investigated area became significantly colder only at the end of the 19th century. Cooling culminated around 1950 when it was replaced by rapid warming. Recent warming was not inferred only for one of the investigated holes.
 
Teil von