Shortening and thickening of metropolitan Los Angeles measured and inferred by using geodesy

Citation
Df. Argus et al., Shortening and thickening of metropolitan Los Angeles measured and inferred by using geodesy, GEOLOGY, 27(8), 1999, pp. 703-706
Citations number
20
Categorie Soggetti
Earth Sciences
Journal title
GEOLOGY
ISSN journal
00917613 → ACNP
Volume
27
Issue
8
Year of publication
1999
Pages
703 - 706
Database
ISI
SICI code
0091-7613(199908)27:8<703:SATOML>2.0.ZU;2-R
Abstract
Geodetic observations using the Global Positioning System (GPS) and other t echniques record a high rate of north-south shortening in an east-southeast -trending, 5-40-km-wide belt in northern metropolitan Los Angeles, Californ ia. Downtown Los Angeles is observed to be converging upon the southern San Gabriel Mountains at 6 mm/yr. Aside from the elastic strain that will be r eleased during earthquakes rupturing the san Andreas and San Jacinto faults , east-west lengthening across northern metropolitan Los Angeles is minor, <2.5 mm/yr. Therefore north-south shortening is accommodated mainly by vert ical crustal thickening.