Temporal Changes and Spatial Pattern Evolution of Marine Disasters in China from 1736 to 1911 Based on Geospatial Models: A Multiscalar Analysis

Abstract

Wang, X., 2020. Temporal changes and spatial pattern evolution of marine disasters in China from 1736 to 1911 based on geospatial models: A multiscalar analysis. In: Yang, D.F. and Wang, H. (eds.), Recent Advances in Marine Geology and Environmental Oceanography. Journal of Coastal Research, Special Issue No. 108, pp. 83–88. Coconut Creek (Florida), ISSN 0749-0208.Marine disasters refer to abnormal or drastic changes in the natural ocean environment that lead to disasters at sea or on the coast. The spatial model was used to analyze the temporal and spatial evolution of marine disasters in China from a multiscale perspective. Studies show that the frequency of marine disasters in China was 92.61%. Summer and autumn seasons had the greatest frequency. On a 10-year scale, there was a declining and rising trend, and the annual scale showed a pulsating trend. From 1736 to 1911, marine disasters showed agglomerated distribution, and the spatial distribution of marine disasters showed significant differences. The spatial distribution of marine disasters in China was more south than north, and Guangdong was the most frequently affected. In terms of county distribution, disasters had a spot-shaped distribution at high frequencies and a flower-shaped distribution at low frequencies. The gravity center of marine disasters shifted southward in different periods, and underwent a process of change from SE to SW. It was related to a global- to hemisphere-scale cold-to-warm conversion from the late 19th century to the early 20th century.