Study On The Temporal And Spatial Distribution Of North China’s Earthquake In Qing Dynasty

In the entire history of ancient Chinese earthquakes, Qing was the dynasty with thehighest number of seismic data and the most detailed records. And during this period,North China has the Maximum number of earthquakes and suffered the most seriouslosses caused by the earthquake. And because of the large population, the importantpolitical, economic and cultural status, the study of spatial and temporal distribution ofearthquakes in North China is particularly important.In this paper, after the comparative research of official history and the local historyof the earthquakes in Qing Dynasty, and learning from the results of previous studies, Idetermine the definition the study period, the geographical scope of the study and theassociated earthquake, as well as the time of the earthquake, the epicenter and theearthquake intensity determination method. And through statistical data, Excel softwareand other research methods, the study of temporal and spatial distribution of earthquakesin North China in the Qing Dynasty achieved some viewpoints.Temporal aspects: First, the Qing Dynasty in North China earthquake has bigannual differences, some years will occur more than four times earthquakes whichgreater than5(1668,1830), while others will not occur earthquakes in years evendecades. Second, earthquake in Qing Dynasty of North China most times and occurredleast during January and May. From June to September these four months accounted forthe highest number of half of the total number. Thirdly, the Qing Dynasty of North China,earthquake usually occurred in summer seasons (70%), and during the period ofsummer seasons, large earthquakes occurred frequently, while in winter seasonearthquake descend significantly (30%), earthquake times obviously less than the springand autumn. Finally, depending on the frequency distribution of earthquakes, the QingDynasty of North China earthquake can be divided into five stages-the outbreakintensive period (1654-1708), the seismic quiescence â…  period (1709-1764), theseismically active stage â…  (1765-1830), the seismic quiescence â…± (1831-1879), theseismically active â…± period (1880-1911years).Spatial aspects: First, Hebei Province was the area of high incidence of devastatingearthquakes in the Qing Dynasty of North China, the frequency and seismic strength ofearthquakes were far more than other regions. Shanxi province and Shandong Provincewere roughly at the average level in North China provinces, the number of destructiveearthquakes and earthquake frequency roughly flat with the ground average. Shanxiprovince and Inner Mongolia are relatively calm area throughout the Qing Dynasty,devastating earthquake of these two provinces accounted for about15%of the total. Secondly, according to the earthquake epicenter location in Qing Dynasty of North ChinaI drew a map, through comparison, the earthquake epicenter distribution mostlypresented strip or clumps. In Qing Dynasty of North China the earthquake epicenter areacan be divided into Yanshan area, four Taihang Mountains, Luliang Mountains, FenweiValley and the Southwest region, etc., and the distribution of earthquake zone positionsin North China were roughly identical.