We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
High slip rate for a low seismicity along the Palu-Koro active fault in central Sulawesi (Indonesia).
- Authors
Bellier, Olivier; Sébrier, Michel; Beaudouin, Thierry; Villeneuve, Michel; Braucher, Régis; Bourlès, Didier; Siame, Lionel; Putranto, Eka; Pratomo, Indyo
- Abstract
In eastern Indonesia, the Central Sulawesi fault system consists of complex left-lateral strike-slip fault zones located within the triple junction area between the Pacific, Indo-Australian and Eurasian plates. Seismicity in Central Sulawesi documents low-magnitude shallow earthquakes related, from NW to SE, to the NNW-trending Palu-Koro (PKF) and WNW-trending Matano fault zones. Study of the active fault traces indicates a northward growing complexity in the PKF segmentation. Left-lateral displacement of 370 ± 10 m of streams incised within fans, whose deposition has been dated at 11 000 ± 2300 years, yields a calculated PKF horizontal slip rate of 35 ± 8 mm yr-1 . This geologically determined long-term slip rate agrees with the far-field strike-slip rate of 32–45 mm yr-1 previously proposed from GPS measurements and confirms that the PKF is a fast slipping fault with a relatively low level of seismicity.
- Subjects
INDONESIA; SULAWESI (Indonesia); PALEOSEISMOLOGY; GEOLOGIC faults
- Publication
Terra Nova, 2001, Vol 13, Issue 6, p463
- ISSN
0954-4879
- Publication type
Article
- DOI
10.1046/j.1365-3121.2001.00382.x