Previous lichenometric dating of young geomorphological forms in the Tatra Mountains has been hindered by differences in the determination of initial colonisati
为了提高三维点云配准的性能,采用基于分层粒子群优化的迭代最近点算法来完成点云配准;首先将源点云作为粒子群粒子,将粒子分成多个子群,然后以点云的曲率为适应度值,分别求解子群适应度值和全局粒子适应度值,并将子群适应度值、全局粒子适应度值和粒子当前速度三者结合,共同搜寻最优粒子,以得到能够精确表达点云结构的特征点,最后采用迭代最近点算法对特征点进行配准。仿真结果表明,通过合理设置粒子速度权重和子群规模,
This study investigates the influences of strong tropical volcanic eruptions (SVEs) on daily temperature and precip-itation extreme events using long-term simul
Tafoni are a type of cavernous weathering features widespread in different climate zones around the world,but their origin has not been fully understood.Little
High-magnitude glacial debris flows in small basins in Himalayas have a significant impact on landscape.The Peilong catchment,a tributary of the Parlung Zangbo
Some flow-like landslides tend to lose materials while moving on a relatively dry sliding surface.This phenomenon is called bed deposition.In contrast to the be
Snowfall in the Tianshan Mountains in China is frequent during winter;thus,avalanches have become a severe issue in snow-covered areas.Accumulation and metamorp
Glacial lake outburst floods(GLOFs)represent one of the most serious hazard and risk in deglaciating high mountain regions worldwide and the need for GLOF hazar
Flysch-type aquifers in the Eastern Carpathians usually feed periodic and low-discharge springs.However,in some areas,such as in the upper part of the Po(l)onin
Changes in terrestrial near-surface wind speed(NSWS)are indicative of the concentrated net effect of climate change and anthropogenic activities.Investigating change mechanisms of NSWS not only furthers the understanding of how the atmosphere changes and