海岸线长度量算方法的研究

Study on the coastline length calculation methods

海岸线是重要而宝贵的自然资源,准确量算海岸线长度是摸清海洋家底和实施有效管理的前提。但目前海洋界没有统一的海岸线长度量算方法。提出基于高斯平均引数的椭球面长度算法,并采用MapBasic语言的实现海岸线长度的自动化计算,通过验证和比对,比目前海洋界普遍采用的平面长度算法更准确,可在实际工作中推广。

Coastline is the important and valuable natural resource,and accurate calculation of the coastline length is the premise of understanding the status of marine resources,and effective management of coast.But there is no uniform method of calculating the length of the coastline.This paper proposes using Ellipsoid-Length algorithm based on Gauss mid-latitude formula to calculate the length of the Earth＇s surface curves,and running MapBasic programming to automatically get the length.Through the verification and comparison,the results show that Ellipsoid-length algorithm is more accurate than Plane-Length algorithm,and worth the promotion in future work.