Q1. Why is the National Gravity Reference Station needed and what equipment does it host?
A： The Ministry of the Interior (MOI) is responsible for developing national surveying, including the establishment of national horizontal, vertical and gravity references. Since 2003, advanced equipment and techniques have been introduced to establish geodetic (satellite tracking stations), height (the Taiwan Vertical Datum) and gravity (the National Gravity Reference Station) datums for nationwide use. Major equipment includes a superconducting gravimeter, relative gravimeter, absolute gravimeter, airborne/shipborne gravimeters, a velocity seismometer, GPS receivers and a suite of environmental sensors (data logger, anemometer, hygrometer/thermometer, barometer, rain gauge, water-level/temperature sensor, soil-moisture sensor, etc.).