Monitoring groundwater variations with ambient noise correlations in Beijing
We conduct a seismological monitoring study for groundwater fluctuations within the 12-yr period of 2012–2023 in Beijing using relative seismic velocity changes (dv/v) from continuous ambient noise data. Our measured dv/v time-series agree with groundwater level changes observed from groundwater wel...
| Autores: | , , , , |
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| Tipo de documento: | artigo |
| Estado: | Versão publicada |
| Data de publicação: | 2025 |
| País: | España |
| Recursos: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositório: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:dnet:digitalcsic_::691a40d197377bd9a26da4345937b104 |
| Acesso em linha: | http://hdl.handle.net/10261/430743 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Hydrogeophysics Coda waves Seismic interferometry Seismic noise |
| Resumo: | We conduct a seismological monitoring study for groundwater fluctuations within the 12-yr period of 2012–2023 in Beijing using relative seismic velocity changes (dv/v) from continuous ambient noise data. Our measured dv/v time-series agree with groundwater level changes observed from groundwater wells and reveal significant characteristics on hydrological and other environmental changes. The most intriguing feature is a dv/v increase of ∼0.02 per cent in winter, which is interpreted as the imprint of frozen ground perhaps associated with decoupling between air pressure and groundwater. In addition, a rapid reduction of dv/v during the second half of 2021 indicates the development of a groundwater recharging event resulting from heavy rainfall. The long-term trends of dv/v suggest a groundwater rebound from 2018 to 2023 over the study area, which we attribute to increased precipitation, recharging due to the South-to-North Water Transfer Project and reduced irrigation. |
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