Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science最新文献_第4页

Disthène et staurotide reliques dans les métapelites du Canigou (Pyrénées orientales). Relations avec les épisodes hercyniens de basse et moyenne pressions Canigou (pyrenees orientales) metapelites中的disthene和staurotide遗迹。与中低压力海西期的关系

Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science Pub Date : 2001-11-30 DOI: 10.1016/S1251-8050(01)01670-6

Bernard Azambre, Gérard Guitard

引用次数: 17

Étude de stationnarité des caractéristiques des événements pluvieux de la station de Niamey sur la période 1956–1998 尼亚美站1956 - 1998年降雨事件特征的平稳性研究

Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science Pub Date : 2001-11-30 DOI: 10.1016/S1251-8050(01)01690-1

Hélène Lubès-Niel , Luc Séguis , Robert Sabatier

引用次数: 19

Redéfinition des fonctions de production des modèles globaux de relation pluie–débit en milieu semi-aride africain 重新定义非洲半干旱地区全球降雨-流量关系模型的生产函数

Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science Pub Date : 2001-11-30 DOI: 10.1016/S1251-8050(01)01689-5

Sandra Ardoin, Alain Dezetter, Éric Servat, Claude Bocquillon

引用次数: 11

Temporal variations of river basin waters from Topex/Poseidon satellite altimetry. Application to the Amazon basin 基于Topex/Poseidon卫星测高数据的流域水时间变化。应用于亚马逊河流域

Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science Pub Date : 2001-11-30 DOI: 10.1016/S1251-8050(01)01688-3

Ilce de Oliveira Campos , Franck Mercier , Caroline Maheu , Gérard Cochonneau , Pascal Kosuth , Denizar Blitzkow , Anny Cazenave

{"title":"Temporal variations of river basin waters from Topex/Poseidon satellite altimetry. Application to the Amazon basin","authors":"Ilce de Oliveira Campos , Franck Mercier , Caroline Maheu , Gérard Cochonneau , Pascal Kosuth , Denizar Blitzkow , Anny Cazenave","doi":"10.1016/S1251-8050(01)01688-3","DOIUrl":"https://doi.org/10.1016/S1251-8050(01)01688-3","url":null,"abstract":"<div><p>Although developed and optimised for open oceans, satellite altimetry has the potential to monitor level variations of inland surface waters such as lakes and rivers. Here we present results of water level variations of the Amazon River based on eight years (1993–2000) of altimetry data of the Topex/Poseidon satellite. We first discuss methods to detect wet surfaces from the altimetric measurements, discriminate between water and dry land, and quantify the accuracy of altimetric measurements over water. Then we show water level fluctuations at selected locations where the satellite crosses the Amazon River. The dominant signal is seasonal, mostly annual, with an amplitude of up to 10–15 m peak to peak. Comparison with in situ measurements indicates that water levels are well measured by Topex/Poseidon during high-water season, unlike low-water season, which suffers from data gaps. We further discuss the interannual component of the signal, which shows two marked minima in 1995 and 1998. The 1998 minimum is interpreted as an effect of the 1997–1998 ENSO event, causing rainfall deficit in the central part of the Amazon basin, hence decrease in water levels. An EOF analysis of precipitation fields over the basin during the 1993–1999 period confirms the rainfall minimum by the end of 1997 for this region.</p></div>","PeriodicalId":100301,"journal":{"name":"Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science","volume":"333 10","pages":"Pages 633-643"},"PeriodicalIF":0.0,"publicationDate":"2001-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1251-8050(01)01688-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91721243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 86

L'évolution paléoenvironnementale des faunes de poissons du Crétacé supérieur du bassin du Tafilalt et des régions avoisinantes (Sud-Est du Maroc) : implications paléobiogéographiques 塔菲拉特盆地及其周边地区白垩纪晚期鱼类种群的古环境演化(摩洛哥东南部):古生物地理意义

Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science Pub Date : 2001-11-30 DOI: 10.1016/S1251-8050(01)01674-3

Lionel Cavin , Larbi Boudad , Sylvain Duffaud , Lahcen Kabiri , Jean Le Lœuff , Isabelle Rouget , Haiyan Tong

引用次数: 38

Le cycle sismique en Himalaya 喜马拉雅山的地震周期

Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science Pub Date : 2001-11-15 DOI: 10.1016/S1251-8050(01)01573-7

Jean-Philippe Avouac , Laurent Bollinger , Jérôme Lavé , Rodolphe Cattin , Mireille Flouzat

{"title":"Le cycle sismique en Himalaya","authors":"Jean-Philippe Avouac , Laurent Bollinger , Jérôme Lavé , Rodolphe Cattin , Mireille Flouzat","doi":"10.1016/S1251-8050(01)01573-7","DOIUrl":"10.1016/S1251-8050(01)01573-7","url":null,"abstract":"<div><p>We discuss the seismic cycle in the Himalayas and its relation to mountain building on the basis of geodetic, seismological and geological data collected in the Himalaya of Nepal. On average over several seismic cycles, localized slip on a major thrust fault, the Main Himalayan Thrust fault, MHT, accommodates the ∼21 mm·yr<sup>−1</sup> convergence rate between southern Tibet and India. The geodetic data show that the MHT is presently locked from the sub-Himalayas to beneath the front of the high range where it roots into a sub-horizontal ductile shear zone under southern Tibet. Aseismic slip during the interseismic period induces stress accumulation at the southern edge of this shear zone triggering intense microseismic activity and elastic straining of the upper crust at the front of the high range. This deformation is released, on the long term, by major earthquakes on the MHT. Such an event is the <em>M</em><sub>w</sub> 8.4-1934-earthquake that ruptured a 250–300-km long segment. The major seismic events along the Himalayas since the 19th century have released more than 70% of the crustal strain accumulated over that period, suggesting that, if any, aseismic slip on the MHT cannot account for more than 30% of the total slip.</p></div>","PeriodicalId":100301,"journal":{"name":"Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science","volume":"333 9","pages":"Pages 513-529"},"PeriodicalIF":0.0,"publicationDate":"2001-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1251-8050(01)01573-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77033595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 43

Long-term slip rates and characteristic slip: keys to active fault behaviour and earthquake hazard 长期滑动率和特征滑动:活动断层行为和地震危险的关键

Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science Pub Date : 2001-11-15 DOI: 10.1016/S1251-8050(01)01668-8

Paul Tapponnier , Frederick James Ryerson , Jerome Van der Woerd , Anne-Sophie Mériaux , Cécile Lasserre

引用次数: 89

Présentation 外观

Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science Pub Date : 2001-11-15 DOI: 10.1016/S1251-8050(01)01691-3

Jacques Angelier, Paul Tapponnier

引用次数: 0

Extension active perpendiculaire à la subduction dans l'arc des Petites Antilles (Guadeloupe, Antilles françaises) 垂直于小安的列斯群岛弧线俯冲的主动延伸(瓜德罗普，法属安的列斯群岛)

Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science Pub Date : 2001-11-15 DOI: 10.1016/S1251-8050(01)01543-9

Nathalie Feuillet, Isabelle Manighetti, Paul Tapponnier

引用次数: 46

The Mw 7.1, Hector Mine, California earthquake: surface rupture, surface displacement field, and fault slip solution from ERS SAR data 加利福尼亚Hector矿m7.1级地震:地表破裂、地表位移场和来自ERS SAR数据的断层滑动解

Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science Pub Date : 2001-11-15 DOI: 10.1016/S1251-8050(01)01658-5

Gilles Peltzer , Frédéric Crampé , Paul Rosen

{"title":"The Mw 7.1, Hector Mine, California earthquake: surface rupture, surface displacement field, and fault slip solution from ERS SAR data","authors":"Gilles Peltzer , Frédéric Crampé , Paul Rosen","doi":"10.1016/S1251-8050(01)01658-5","DOIUrl":"10.1016/S1251-8050(01)01658-5","url":null,"abstract":"<div><p>The <em>Mw</em>7.1, Hector Mine, California earthquake of October 16, 1999 produced a 50 km-long surface rupture, ∼20 km east of the surface rupture of the 1992 Landers earthquake. ERS2 radar data acquired before and after the event provide geodetic measurements of two components of the co-seismic surface displacement field. (1) Interferometric processing of the data provides the range (radar line of sight) component of the displacement field with a precision of a few millimeters. (2) The sub-pixel correlation of the before and after amplitude images provides a second component of the surface displacement field, parallel to the satellite track, with a precision of ∼20 cm. The azimuth offset map reveals a ∼50 km long, NNW surface rupture formed of three sections: a N40°W southern section following the Bullion fault, a N10°W central section cutting through the Bullion Mountains, and a northern N40°W section extending up to the Lavic Lake. A north–south-trending, localized gradient in the azimuth offset field suggests that the central section of the fault extends to the north at depth over a distance of ∼10 km. The slip distribution curve constructed using the azimuth offsets has a bell shape, with a maximum of 6.5 m at the north end of the central fault section. The fault slip model derived from the inversion of the azimuth and from range displacement data indicates that 3–5.8 m of right-lateral slip occurred between the depths of 0 and 8 km along the northern and the central sections of the fault. The solution bears a down-dip component of slip of ∼2 m, west side down, along the southern part of the northern fault section. The down-dip component of slip is consistent with compression on a northeast dipping fault.</p></div>","PeriodicalId":100301,"journal":{"name":"Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science","volume":"333 9","pages":"Pages 545-555"},"PeriodicalIF":0.0,"publicationDate":"2001-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1251-8050(01)01658-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76395850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 40