Data provided by coral growth for sismotectonic studies in Futuna (French Overseas Territory of Wallis and Futuna, southwest Pacific)

被引:4
作者
Cabioch, G [1 ]
Calmant, S [1 ]
Pillet, R [1 ]
Pelletier, B [1 ]
Régnier, M [1 ]
Lebellegard, P [1 ]
机构
[1] Ctr IRD Noumea, UMR Geosci Azur 6526, Lab Geol & Geophys, Noumea 98848, New Caledonia
来源
COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE A-SCIENCES DE LA TERRE ET DES PLANETES | 1999年 / 329卷 / 06期
关键词
corals; microatolls; vertical motions; seismicity; Futuna; France;
D O I
10.1016/S1251-8050(00)80067-1
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
The morphology and growth analysis of coral microatolls using X-rays indicates that after a subsidence of 3 cm from 1977 to 1993, an uplift of 5 cm occurred in 1993 in the southeast of Futuna (southwest Pacific). These vertical motions are related to the strain accumulation followed by their relaxation during the earthquake (Mw: 6.4) on 12 March 1993 The locations published by the global network are nor in agreement with the aftershocks recorded locally and the co-seismic uplifts observed on the reefs. The latter indicate instead that the rupture area is located below the southwest of Futuna at an average depth of 8 km. ((C) 1999 Academie des sciences / Editions scientifiques et medicales Elsevier SAS.).
引用
收藏
页码:429 / 434
页数:6
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