 |
| Titel |
Assessing precipitation distribution impacts on droughts on the island of Crete |
| VerfasserIn |
A.-E. K. Vrochidou, I. K. Tsanis |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1561-8633
|
| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 12, no. 4 ; Nr. 12, no. 4 (2012-04-25), S.1159-1171 |
| Datensatznummer |
250010709
|
| Publikation (Nr.) |
 copernicus.org/nhess-12-1159-2012.pdf |
|
|
|
|
|
| Zusammenfassung |
| Precipitation records from 56 stations on the island of Crete (Greece)
revealed that areal mean annual precipitation is of a strong orographic type
and its magnitude decreases in west-east direction by as much as 400 mm on
average. Amongst many parameters that influence precipitation, the elevation
and longitude were the most important and provided the highest spatial
correlation. It was found that during the year with minimum precipitation,
the precipitation shortage was greater at high elevations while the
precipitation excess during the year with maximum precipitation was greater
in the western part of the island. The assessment of the spatial and
temporal distribution of droughts was carried out with the aid of the
Spatially Normalized Standardized Precipitation Index (SN-SPI) for the
period 1974–2005 in order to compare drought conditions between neighbouring
areas of differing precipitation heights. The analysis showed that severe
droughts occurred around the year 1992–1993, with a duration of up to 3 yr. Multiple linear regression (MLR) modeling of precipitation in
conjunction with cluster analysis of drought duration exhibits the linkage
between precipitation, droughts and geographical factors. This connection
between spatial precipitation distribution and geographical parameters
provides an important clue for the respective spatial drought pattern. The
above findings on the spatio-temporal drought distribution will update the
current~drought management plans by developing more precise drought warning
systems. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|