Analysing the relation between rainfall characteristics and lahar activity at Mount Pinatubo, Philippines

Auteurs :
VAN WESTEN, C.J.
DAAG, A.S.

Description :
Correlation of storm rainfall intensities and durations with lahar activity as recorded by acoustic flow monitors is used to investigate trends in the initiation conditions for lahar activity. The results confirm that these relationships are not linear but rather approximate a power relation. Different relations were found for lahar initiation in different years, from 1991 to 1997, as a result of the dynamic changes in hydrologic and geomorphic conditions of the affected catchments. Data from acoustic flow monitors are used to distinguish debris flow and hyperconcentrated flow activity from that of muddy water.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2005, vol. 30, n°. 13, p. 1663-1674, nombre de pages : 12, Collation : Illustration, Références bibliographiques : 15 ref.

Date :
2005

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley