Changes in widespread aquifer properties caused by a magnitude 6-class earthquake evaluated using InSAR analyses
Correlations between surface displacements and groundwater level changes have been widely used to understand aquifer properties and their site characteristics; however, the underlying mechanisms of various correlation types and the influence of earthquakes have not been fully investigated. In this s...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-08-01
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| Series: | International Journal of Applied Earth Observations and Geoinformation |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1569843223002182 |
| _version_ | 1797737963039227904 |
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| author | Yutaro Shigemitsu Kazuya Ishitsuka Weiren Lin |
| author_facet | Yutaro Shigemitsu Kazuya Ishitsuka Weiren Lin |
| author_sort | Yutaro Shigemitsu |
| collection | DOAJ |
| description | Correlations between surface displacements and groundwater level changes have been widely used to understand aquifer properties and their site characteristics; however, the underlying mechanisms of various correlation types and the influence of earthquakes have not been fully investigated. In this study, we examine correlations between surface displacements from interferometric synthetic aperture radar analyses and groundwater level monitoring data in Osaka and Kyoto, Japan, over 4 years, a period including the 18 June 2018 Mw 5.6 northern Osaka earthquake. Both positive and negative correlations between the seasonal groundwater level changes and the seasonal surface displacements are identified. Based on the observations of the effects of the earthquake, a new conceptual aquifer dynamical model driving the relationship between the surface displacements and the groundwater level changes is proposed. We further reveal that sites with negative correlations increased after the earthquake, suggesting that the earthquake increased the groundwater recharge rate as a result of increases in aquifer transportation properties such as permeability and porosity. |
| first_indexed | 2024-03-12T13:37:02Z |
| format | Article |
| id | doaj.art-1848a1fe5c5f4eaf86edf8bf9c22ccac |
| institution | Directory Open Access Journal |
| issn | 1569-8432 |
| language | English |
| last_indexed | 2024-03-12T13:37:02Z |
| publishDate | 2023-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal of Applied Earth Observations and Geoinformation |
| spelling | doaj.art-1848a1fe5c5f4eaf86edf8bf9c22ccac2023-08-24T04:34:08ZengElsevierInternational Journal of Applied Earth Observations and Geoinformation1569-84322023-08-01122103394Changes in widespread aquifer properties caused by a magnitude 6-class earthquake evaluated using InSAR analysesYutaro Shigemitsu0Kazuya Ishitsuka1Weiren Lin2Corresponding author.; Department of Urban Management, Graduate School of Engineering, Kyoto University, Kyoto, Japan; 615-8540 C-1-118 Katsura, Kyoto University, Nishikyo-ku, Kyoto City, Kyoto, JapanDepartment of Urban Management, Graduate School of Engineering, Kyoto University, Kyoto, Japan; 615-8540 C-1-118 Katsura, Kyoto University, Nishikyo-ku, Kyoto City, Kyoto, JapanDepartment of Urban Management, Graduate School of Engineering, Kyoto University, Kyoto, Japan; 615-8540 C-1-118 Katsura, Kyoto University, Nishikyo-ku, Kyoto City, Kyoto, JapanCorrelations between surface displacements and groundwater level changes have been widely used to understand aquifer properties and their site characteristics; however, the underlying mechanisms of various correlation types and the influence of earthquakes have not been fully investigated. In this study, we examine correlations between surface displacements from interferometric synthetic aperture radar analyses and groundwater level monitoring data in Osaka and Kyoto, Japan, over 4 years, a period including the 18 June 2018 Mw 5.6 northern Osaka earthquake. Both positive and negative correlations between the seasonal groundwater level changes and the seasonal surface displacements are identified. Based on the observations of the effects of the earthquake, a new conceptual aquifer dynamical model driving the relationship between the surface displacements and the groundwater level changes is proposed. We further reveal that sites with negative correlations increased after the earthquake, suggesting that the earthquake increased the groundwater recharge rate as a result of increases in aquifer transportation properties such as permeability and porosity.http://www.sciencedirect.com/science/article/pii/S1569843223002182PSInSAR2018 northern Osaka earthquakeGroundwater level changeAquifer propertiesCorrelation coefficient |
| spellingShingle | Yutaro Shigemitsu Kazuya Ishitsuka Weiren Lin Changes in widespread aquifer properties caused by a magnitude 6-class earthquake evaluated using InSAR analyses International Journal of Applied Earth Observations and Geoinformation PSInSAR 2018 northern Osaka earthquake Groundwater level change Aquifer properties Correlation coefficient |
| title | Changes in widespread aquifer properties caused by a magnitude 6-class earthquake evaluated using InSAR analyses |
| title_full | Changes in widespread aquifer properties caused by a magnitude 6-class earthquake evaluated using InSAR analyses |
| title_fullStr | Changes in widespread aquifer properties caused by a magnitude 6-class earthquake evaluated using InSAR analyses |
| title_full_unstemmed | Changes in widespread aquifer properties caused by a magnitude 6-class earthquake evaluated using InSAR analyses |
| title_short | Changes in widespread aquifer properties caused by a magnitude 6-class earthquake evaluated using InSAR analyses |
| title_sort | changes in widespread aquifer properties caused by a magnitude 6 class earthquake evaluated using insar analyses |
| topic | PSInSAR 2018 northern Osaka earthquake Groundwater level change Aquifer properties Correlation coefficient |
| url | http://www.sciencedirect.com/science/article/pii/S1569843223002182 |
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