Temporal-spatial characteristics of storm surges and rough seas in coastal areas of Mainland China from 2000 to 2019

Marine disasters pose a serious threat to economic and social development; therefore, understanding their occurrence rhythms is of great importance disaster prevention mitigation. As major form marine in China, storm surges rough seas are particularly worthy attention. In this study, statistical data regarding over the past 20 years were collected, visual approach was utilized detect scope, distribution, temporal-spatial characteristics. Implementation mitigation then discussed. The results revealed following: (1) exhibited significant seasonality (occurring summer autumn), while sea occurrences occurred throughout year. (2) losses caused by showed clear regional differences. Specifically, death tolls southern provinces greater than northern provinces, but they decreased significantly from 2000–2009 2010–2019. (3) loss also differences, with values provinces. total has dropped recent years.