Petrology and in situ U-Th-Pb Monazite Geochronology of Ultrahigh-Temperature Metamorphism from the Andriamena Mafic Unit, North-Central Madagascar. Significance of a Petrographical P-T Path in a Polymetamorphic Context   总被引：1，自引：0，他引：1  

GONCALVES  PHILIPPE; NICOLLET  CHRISTIAN; MONTEL  JEAN-MARC 《Journal of Petrology》2004,45(10):1923-1957

Petrological studies and electron microprobe dating of monazitefrom the mafic Andriamena unit, north–central Madagascar,indicate that an apparently continuous P–T path inferredfor Mg-granulites is actually discontinuous, resulting fromthe superposition of two distinct metamorphic events at 2·5Ga and  相似文献   

Supporting evidence from the EPICA Dronning Maud Land ice core for atmospheric CO₂ changes during the past millennium     

URS SIEGENTHALER  ERIC MONNIN  KENJI KAWAMURA  RENATO SPAHNI  JAKOB SCHWANDER  BERNHARD STAUFFER  THOMAS F. STOCKER  JEAN-MARC BARNOLA  HUBERTUS FISCHER 《Tellus. Series B, Chemical and physical meteorology》2005,57(1):51-57

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Time-dependent shear velocities in channel routing     

PAWEŁ M. ROWIŃSKI  WŁODZIMIERZ CZERNUSZENKO  JEAN-MARC MARC 《水文科学杂志》2013,58(6):881-895

Abstract

The main aim of this study is the experimental investigation of friction velocities and shear stresses in rivers under unsteady flow conditions. Special measurements of mean velocities and other hydraulic parameters were made in two small lowland rivers in central Poland. Four controlled flood waves were released and analysed in the selected reaches. The main hydrometric characteristics and the relationship between water level and discharge were established. Friction velocities were obtained directly from the full St Venant equations of motion, as well as from only the steady momentum equation, and their time-dependent forms were established. Both these approaches provided similar results when the unsteadiness parameter was relatively low. It appeared that real friction velocities were much larger than those obtained from the common uniform flow formula. The passing hydrograph influenced the value of the shear velocity significantly.  相似文献   

Processes affecting the CO₂ concentrations measured in Greenland ice     

MARTIN ANKLIN  JEAN-MARC BARNOLA  JAKOB SCHWANDER  BERNHARD STAUFFER  DOMINIQUE RAYNAUD 《Tellus. Series B, Chemical and physical meteorology》1995,47(4):461-470

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