Titre de série :	Geological survey water - supply paper, 2080
Titre :	Dendroclimatic estimates of a drought index for Northern Virginia
Type de document :	texte imprimé
Auteurs :	Puckett, L. J.
Mention d'édition :	US Government Printing Office
Editeur :	US Government Printing Office
Année de publication :	1981
ISBN/ISSN/EAN :	CI-07799
Note générale :	A A 23 year record of the palmer drought - severity index (PDSI) has estimated for Norhtern Virginia from variations in widths of three rings. Increment cores are extrated fromeastern hemlock . Measuremarts of annual grouth increments are made and converted to standardized indices of grouth. A response function is derived for hemlock to determine the grouth - Climate relationship . Growth is positively correlate with precipitation and negatively correlated with temperature during the May - July growing season Combined standardized indices of grouth are calibrated with the July PDSI. Growth accounted for 20 - 30 percent of the PDSI variance . Further regressions using factor scores of combined three grouth indices resulted in a small but significant improvement. Comparaison of the results with a 241 year reconstruction from New - York showed good agreement between low frequency climatic trends.
Langues :	Anglais (eng)
Mots-clés :	Sécheresse  Géologie  Alimentation en eau  Climat  PRECIPITATIONS  Construction
Index. décimale :	631.1 Dégâts dus à des fléaux naturels : froid, sécheresse, précipitations, pollution
Résumé :	A A 23 year record of the palmer drought - severity index (PDSI) has estimated for Norhtern Virginia from variations in widths of three rings. Increment cores are extrated fromeastern hemlock . Measuremarts of annual grouth increments are made and converted to standardized indices of grouth. A response function is derived for hemlock to determine the grouth - Climate relationship . Growth is positively correlate with precipitation and negatively correlated with temperature during the May - July growing season Combined standardized indices of grouth are calibrated with the July PDSI. Growth accounted for 20 - 30 percent of the PDSI variance . Further regressions using factor scores of combined three grouth indices resulted in a small but significant improvement. Comparaison of the results with a 241 year reconstruction from New - York showed good agreement between low frequency climatic trends.
Note de contenu :	A A 23 year record of the palmer drought - severity index (PDSI) has estimated for Norhtern Virginia from variations in widths of three rings. Increment cores are extrated fromeastern hemlock . Measuremarts of annual grouth increments are made and converted to standardized indices of grouth. A response function is derived for hemlock to determine the grouth - Climate relationship . Growth is positively correlate with precipitation and negatively correlated with temperature during the May - July growing season Combined standardized indices of grouth are calibrated with the July PDSI. Growth accounted for 20 - 30 percent of the PDSI variance . Further regressions using factor scores of combined three grouth indices resulted in a small but significant improvement. Comparaison of the results with a 241 year reconstruction from New - York showed good agreement between low frequency climatic trends.

Geological survey water - supply paper, 2080. Dendroclimatic estimates of a drought index for Northern Virginia [texte imprimé] / Puckett, L. J.  . -  US Government Printing Office . - US Government Printing Office, 1981.
ISSN : CI-07799
A A 23 year record of the palmer drought - severity index (PDSI) has estimated for Norhtern Virginia from variations in widths of three rings. Increment cores are extrated fromeastern hemlock . Measuremarts of annual grouth increments are made and converted to standardized indices of grouth. A response function is derived for hemlock to determine the grouth - Climate relationship . Growth is positively correlate with precipitation and negatively correlated with temperature during the May - July growing season Combined standardized indices of grouth are calibrated with the July PDSI. Growth accounted for 20 - 30 percent of the PDSI variance . Further regressions using factor scores of combined three grouth indices resulted in a small but significant improvement. Comparaison of the results with a 241 year reconstruction from New - York showed good agreement between low frequency climatic trends.
Langues : Anglais (eng)

Mots-clés :	Sécheresse  Géologie  Alimentation en eau  Climat  PRECIPITATIONS  Construction
Index. décimale :	631.1 Dégâts dus à des fléaux naturels : froid, sécheresse, précipitations, pollution
Résumé :	A A 23 year record of the palmer drought - severity index (PDSI) has estimated for Norhtern Virginia from variations in widths of three rings. Increment cores are extrated fromeastern hemlock . Measuremarts of annual grouth increments are made and converted to standardized indices of grouth. A response function is derived for hemlock to determine the grouth - Climate relationship . Growth is positively correlate with precipitation and negatively correlated with temperature during the May - July growing season Combined standardized indices of grouth are calibrated with the July PDSI. Growth accounted for 20 - 30 percent of the PDSI variance . Further regressions using factor scores of combined three grouth indices resulted in a small but significant improvement. Comparaison of the results with a 241 year reconstruction from New - York showed good agreement between low frequency climatic trends.
Note de contenu :	A A 23 year record of the palmer drought - severity index (PDSI) has estimated for Norhtern Virginia from variations in widths of three rings. Increment cores are extrated fromeastern hemlock . Measuremarts of annual grouth increments are made and converted to standardized indices of grouth. A response function is derived for hemlock to determine the grouth - Climate relationship . Growth is positively correlate with precipitation and negatively correlated with temperature during the May - July growing season Combined standardized indices of grouth are calibrated with the July PDSI. Growth accounted for 20 - 30 percent of the PDSI variance . Further regressions using factor scores of combined three grouth indices resulted in a small but significant improvement. Comparaison of the results with a 241 year reconstruction from New - York showed good agreement between low frequency climatic trends.