Title | Crustal deformation at the Sumatran subduction zone revealed by coral rings |
Publication Type | Journal Article |
Year of Publication | 1999 |
Authors | Ward SN, Natawidjaja DH, Suwargadi BW, Sieh KE |
Journal | Geophysical Research Letters |
Volume | 26 |
Pagination | 3141-3144 |
Date Published | Oct |
ISBN Number | 0094-8276 |
Accession Number | WOS:000083160000023 |
Abstract | Analyses of coral rings grown in the interval 1970-1997 reveal a geographically distinct pattern of interseismic uplift off Sumatra's western coast. At distances less than 110 km from the Sumatran trench, coral reefs are submerging as fast as 5 mm/y. At 130 and 180 km distance from the trench, they are emerging at similar rates. We suggest that a locked, or partially locked patch, located above 30 km depth on the upper surface of the subducting oceanic plate, generates this pattern. |