AUTHOR=Li Xiaojuan , Zhou Chaofan , Gong Huili , Chen Beibei , Gao Xiaodan , Yang Yabin , Sun Xiaoxiao TITLE=Study on spatiotemporal variation patterns of groundwater in the North Shandong Plain and its response to precipitation JOURNAL=Frontiers in Earth Science VOLUME=13 YEAR=2025 URL=https://www.frontiersin.org/journals/earth-science/articles/10.3389/feart.2025.1543335 DOI=10.3389/feart.2025.1543335 ISSN=2296-6463