Improved sampling and validation of frozen Gaussian approximation with surface hopping algorithm for nonadiabatic dynamics
JOURNAL OF CHEMICAL PHYSICS
Authors: Lu, Jianfeng; Zhou, Zhennan
Abstract
In the spirit of the fewest switches surface hopping, the frozen Gaussian approximation with surface hopping (FGA-SH) method samples a path integral representation of the non-adiabatic dynamics in the semiclassical regime. An improved sampling scheme is developed in this work for FGA-SH based on birth and death branching processes. The algorithm is validated for the standard test examples of non-adiabatic dynamics. Published by AIP Publishing.
Gravity anomalies and lithospheric flexure around the Longmen Shan deduced from combinations of in situ observations and EGM2008 data
EARTH PLANETS AND SPACE
Authors: She, Yawen; Fu, Guangyu; Wang, Zhuohua; Liu, Tai; Xu, Changyi; Jin, Honglin
Abstract
The current work describes the combined data of three field campaigns, spanning 2009-2013. Their joint gravity and GPS observations thoroughly cover the sites of lithospheric flexure between the Sichuan Basin and the Eastern Tibetan Plateau. The study area's free-air gravity anomalies (FGAs) are updated by using a remove-and-restore algorithm which merges EGM2008 data with in situ observations. These new FGAs show pairs of positive and negative anomalies along the eastern edges of the Tibetan Plateau. The FGAs are used to calculate effective elastic thickness (T-e) and load ratios (F) of the lithosphere. Admittance analysis indicates the Te of Longmen Shan (LMS) to be 6 km, and profile analysis indicates that the T-e of the Sichuan Basin excesses 30 km. The load ratio (F-1 = 1) confirms that the lithospheric flexure of the LMS area can be attributed solely to the surface load of the crust.
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