River Basin Hub Operation Management Center, China Three Gorges Corporation, Yichang 443133, Hubei, China;Hubei Key Laboratory of Operation Safety of High Dam and Large Reservoir, Yichang 443133, Hubei, China 在期刊界中查找 在百度中查找 在本站中查找
River Basin Hub Operation Management Center, China Three Gorges Corporation, Yichang 443133, Hubei, China;Hubei Key Laboratory of Operation Safety of High Dam and Large Reservoir, Yichang 443133, Hubei, China 在期刊界中查找 在百度中查找 在本站中查找
Key laboratory of Earthquake Geodesy, Institute of Seismology, CEA, Wuhan 430071, China;Hubei Earthquake Agency, Wuhan, 430071, China 在期刊界中查找 在百度中查找 在本站中查找
Key laboratory of Earthquake Geodesy, Institute of Seismology, CEA, Wuhan 430071, China;Hubei Earthquake Agency, Wuhan, 430071, China 在期刊界中查找 在百度中查找 在本站中查找
Key laboratory of Earthquake Geodesy, Institute of Seismology, CEA, Wuhan 430071, China;Hubei Earthquake Agency, Wuhan, 430071, China 在期刊界中查找 在百度中查找 在本站中查找
Key laboratory of Earthquake Geodesy, Institute of Seismology, CEA, Wuhan 430071, China;Hubei Earthquake Agency, Wuhan, 430071, China 在期刊界中查找 在百度中查找 在本站中查找
Key laboratory of Earthquake Geodesy, Institute of Seismology, CEA, Wuhan 430071, China;Hubei Earthquake Agency, Wuhan, 430071, China 在期刊界中查找 在百度中查找 在本站中查找
Gravity observations constitute a pivotal element within the seismic monitoring framework of the Three Gorges Reservoir region. This paper undertakes a comprehensive analysis of the spatial coverage,resolution,and measurement precision of the Three Gorges gravity network. Utilizing empirical benchmarks for spatial extent and the magnitude of gravitational anomalies in relation to seismic magnitudes,the seismic monitoring capacity of the network is rigorously assessed. The results show that the spatial resolution and observational precision of Three Gorges gravity network are adequate for the detection of earthquakes magnitude 4 and higher. Nonetheless,the spatial coverage extends only partially within the empirically defined parameters for the gravitational anomaly field range associated with magnitude 5 earthquakes. Consequently,while the network demonstrates robust monitoring capabilities for earthquakes ranging from magnitude 4 to 5,its ability to fully delineate the gravitational anomaly patterns triggered by larger seismic events remains uncertain. Furthermore,we find that gravitational variations induced by fluctuations in the water level of the Three Gorges Reservoir exert a considerable influence on gravity measurements. It is imperative to account for these effects by integrating contemporaneous water level data into the gravity observation calculations.