Geopen Seismograph Se3nt 4d Microfracture Seismic Surveying System

Microtremor monitoring technology recently begun widespread usage. It can be divided into two types: natural sources and man-made sources. Natural sources of microtremors arise primarily from wind, ocean waves, volcanic activity, tectonic activity, surface rock migration and are collected called geological noise. These are used in the early stages of building and structure seismic evaluation and design, foundation classification, and foundation improvement. After the 60's it also saw use in landslide monitoring and geothermal surveying. Man-made sources primarily arise from means of transportation, machinery, production, and artificial fracturing and blast mining. In recent years, this technology saw application in the fields of illegal mining surveillance, mined out area investigation, hydraulic fracturing, geothermal energy surveying, carbon dioxide sequestration monitoring, orebody water migration, and general environmental monitoring and microtremor monitoring.