Characterising the irregular coastlines of volcanic ocean islands

Auteur :
MITCHELL, N.C.

Description :
Volcanic ocean islands grow into irregular shapes because of eruption along radiating volcanic rift zones, caldera collapse, slope failure, coalescence of adjacent volcanoes and marine and subaerial erosion. With the aim of searching for variations with environmental parameters which might reflect variations in these processes, this study calculates and analyses characteristics of island irregularity from the World Vector Shoreline database (a series of digitised points, nodes, representing the continuous shorelines of the world's landmasses. The analysis also resolves the orientations of islands with respect to the tectonic fabric of their underlying oceanic basement.


Type de document :
Article de périodique

Source :
Geomorphology (Amsterdam), issn : 0169-555X, 1998, vol. 23, n°. 1, p. 1-14, Collation : Illustration, Références bibliographiques : 48 ref.

Date :
1998

Editeur :
Pays édition : Pays-Bas, Amsterdam, Elsevier