scholarly journals Uplift of the Emei Shan, western Sichuan Basin: Implication for eastward propagation of the Tibetan Plateau in Early Miocene

2016 ◽  
Vol 115 ◽  
pp. 29-39 ◽  
Author(s):  
Kai Meng ◽  
Erchie Wang ◽  
Gang Wang
Keyword(s):  
Tibetan Plateau ◽  
Sichuan Basin ◽  
Early Miocene ◽  
The Tibetan Plateau ◽  
Western Sichuan ◽  
Western Sichuan Basin

scholarly journals Dominant Large-Scale Atmospheric Circulation Systems for the Extreme Precipitation over the Western Sichuan Basin in Summer 2013

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Yamin Hu ◽  
Panmao Zhai ◽  
Lihong Liu ◽  
Yang Chen ◽  
Yanju Liu
Keyword(s):  
Extreme Precipitation ◽  
Sichuan Basin ◽  
Large Scale ◽  
Function Technique ◽  
Western Sichuan ◽  
Cold Flow ◽  
Circulation Patterns ◽  
Anomalous Anticyclone ◽  
Western Sichuan Basin ◽  
Large Scale Atmospheric Circulation

The western Sichuan Basin (WSB) is a rainstorm center influenced by complicated factors such as topography and circulation. Based on multivariable empirical orthogonal function technique for extreme precipitation processes (EPP) in WSB in 2013, this study reveals the dominant circulation patterns. Results indicate that the leading modes are characterized by “Saddle” and “Sandwich” structures, respectively. In one mode, a TC from the South China Sea (SCS) converts into the inverted trough and steers warm moist airflow northward into the WSB. At the same time, WPSH extends westward over the Yangtze River and conveys a southeasterly warm humid flow. In the other case, WPSH is pushed westward by TC in the Western Pacific and then merges with an anomalous anticyclone over SCS. The anomalous anticyclone and WPSH form a conjunction belt and convey the warm moist southwesterly airflow to meet with the cold flow over the WSB. The configurations of WPSH and TC in the tropic and the blocking and trough in the midhigh latitudes play important roles during the EPPs over the WSB. The persistence of EPPs depends on the long-lived large-scale circulation configuration steady over the suitable positions.

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