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National Land Surveying and Mapping Center. Republic of China(Taiwan)
National Land Surveying and Mapping Center. Republic of China(Taiwan)
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About NLSC
Overview
Structure and Functions
NLSC INTRO
News
News
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Key Activities
Land Use
Cadastral Survey
Geodetic Survey
Topographic Survey
Hydrographic Survey
International Activities
Surveying and Mapping Technology Development
Maps Management & Supply
3D National Base Map
Geospatial Information Network Services
Multi-Dimensional Geospatial Mapping Program
Digital Terrain Model (DTM)
Geospatial Products
Control Points
Cadastral Maps
Taiwan e-Maps
Basic Topographic Maps
Land Use Investigation Maps
Land Parcellary Plan Thematic Maps
Original Results of Digital Cadastral Survey
Provision of 3D Model in Physical Format
Online Service
Taiwan MAP Store
Taiwan MAP Service
NGIS Basic Topographic Map Website
Survey Instrument Calibration Laboratory Service
e-GNSS Real-time Positioning System Service Portal
National Continuously Operating Reference System and Basic Control Point Inquiring System
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Orthometric Height of Mt. Jade
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Orthometric Height of Mt. Jade
Orthometric Height of Mt. Jade
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Orthometric Height of Mt. Jade
As a spiritual symbol of Taiwan, Mt. Jade is the highest peak in Taiwan and in Northeastern Asia. The height of Mt. Jade was determined to be 3952.382m in 1978 by Trigonometric Leveling.
For conducting new orthometric height of Mt. Jade, NLSC implemented the survey, verification, and orthometric correction by combining leveling, satellite positioning, and gravity survey in 2003. As a result, the orthometric height of Mt. Jade is 3951.798±0.072m, where ±0.072m represents the precision of survey result.
To re-leveling the difference of the orthometric height of Mt. Jade after 14 years, NLSC implemented the survey in 2016 and 2017, the orthometric height of Mt. Jade is 3952.430±0.045m, where ±0.045m represents the precision of survey result.
For “the results of level reference survey for Taiwan class 1 level reference net in 2022” had disclosed by the Ministry of the interior, the difference of the orthometric height of Mt. Jade was re-leveled by NLSC in 2022, the result is 3952.433±0.046m, where ±0.046m represents the precision of survey result.