首页|A detailed rock density model of the Hong Kong territories
A detailed rock density model of the Hong Kong territories
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国家科技期刊平台
NETL
NSTL
万方数据
维普
We used the geological map and published rock density measurements to compile the digital rock density model for the Hong Kong territories.We then estimated the average density for the whole territory.According to our result,the rock density values in Hong Kong vary from 2101 to 2681 kg·m-3.These density values are typically smaller than the average density of 2670 kg·m-3,often adopted to represent the average density of the upper continental crust in physical geodesy and gravimetric geophysics applications.This finding reflects that the geological configuration in Hong Kong is mainly formed by light volcanic formations and lava flows with overlying sedimentary deposits at many loca-tions,while the percentage of heavier metamorphic rocks is very low(less than 1％).This product will improve the accuracy of a detailed geoid model and orthometric heights.
Density modelRock typesGravimetric modelingHong Kong
Albertini Nsiah Ababio、Robert Tenzer
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Department of Land Surveying and Geo-Informatics,Hong Kong Polytechnic University,Hong Kong,China
国家科技期刊平台
NSTL
万方数据
维普
