Advances in the study of natural disasters induced by the "23.7" extreme rainfall event in North China

The article compiles and summarizes research on the natural disasters triggered by the "23.7" extreme rainfall in North China, utilizing the VOSViewer (Visualization of Similarities viewer) software for bibliometric analysis of existing studies and looking forward to future research. Based on the CNKI(China National Knowledge Infrastructure) database, the article focuses on studies related to meteorological, hydrological, and geological disasters resulting from this event. A total of 145 documents were obtained, including 41 articles on meteorological disaster research, 77 articles on hydrological disaster research, and 12 articles on geological disaster research. In the study of meteorological disasters, analyses of the causes and characteristics of heavy rainstorms have been summarized. In the study of hydrological disasters, analyses of the causes and impacts of floods have been summarized. In the study of geological disasters, analyses of the causes of disasters, case studies, and research on monitoring and early warning have been summarized. This event clearly demonstrates a continuous process from meteorological events to hydrological impacts, and then to geological disasters, forming a distinct "meteorological-hydrological-geological disaster" chain. Due to the increasing impact of climate change and human activities on extreme rainfall events, future research should delve deeper into the roles of these factors in floods and geological disasters, strengthen flood disaster management, and enhance geological disaster early warning systems. This is essential for reducing disaster losses and safeguarding the safety of people's lives and property.