AUTHOR=Zhang Xiaolei , Guo Xiaoyi , Liu Shuyu , Shang Xiutang , Xu Zhiheng , Zhao Jiankun TITLE=A study on groundwater level calculation based on PCA-CIWOABP JOURNAL=Frontiers in Earth Science VOLUME=12 YEAR=2024 URL=https://www.frontiersin.org/journals/earth-science/articles/10.3389/feart.2024.1445241 DOI=10.3389/feart.2024.1445241 ISSN=2296-6463