The paper aims to validate the use of Global Navigation Satellite System (GNSS) signals prior to the occurrence of earthquakes as a means of earthquake prediction, by referring to the Great East Japan Earthquake (hereafter called the Great Earthquake). The Great Earthquake occurred….
The Philippines is an archipelagic country located in Southeast Asia. It has a total land area of approximately 300,000 sqkm and 36,289 km of coastline. Its neighbors include Taiwan in the North, Indonesia in the South and Vietnam in the West.
Later in 1888, it was reorganized as Japanese Imperial Land Survey, and then it became the Geographical Survey Institute in former Home Ministry in 1945. Its official English appellation was changed to ‘Geospatial Information Authority of Japan’ in April 2010.