Risk Assessment of Land-Falling Tropical Cyclones in Guangdong Province, China

2011 ◽  
Vol 17 (3) ◽  
pp. 732-744 ◽  
Author(s):  
Junxiang Zhang ◽  
Chongfu Huang ◽  
Xulong Liu ◽  
Qinghua Gong
Keyword(s):  
Risk Assessment ◽  
Tropical Cyclones ◽  
Guangdong Province

scholarly journals Typhoon Disaster Risk Assessment Based on Emergy Theory: A Case Study of Zhuhai City, Guangdong Province, China

2020 ◽  
Vol 12 (10) ◽  
pp. 4212
Author(s):  
Zhicheng Gao ◽  
Rongjin Wan ◽  
Qian Ye ◽  
Weiguo Fan ◽  
Shihui Guo ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Guangdong Province ◽  
Disaster Risk ◽  
Related Data ◽  
Theoretical Support ◽  
Disaster Risk Assessment ◽  
Energy Flows ◽  
Emergy Theory ◽  
Typhoon Disaster

Typhoons and cyclones are the most impacting and destructive natural disasters in the world. To address the shortcomings of a previous typhoon disaster risk assessment (for example, human factors were involved in determining weights by importance, and this affected the experimental results), an emergy method, which converts energy flows of different properties into the same solar energy basis for a convenient comparison, was used to assess the risk of regional typhoon disasters. Typhoon disaster-related data from 2017 were used to develop an index system including resilience, potential strength, and sensitivity which was in turn applied to assess typhoon disaster risks in Zhuhai City, Guangdong Province, China. The results showed that the spatial distribution of the typhoon disaster risks in Zhuhai significantly differed, with the highest risk in Xiangzhou district, the second highest risk in Doumen district, and the lowest risk in Jinwan district. In addition, improving the level of regional resilience can effectively reduce risks from typhoon disasters. The application of the emergy method in a typhoon disaster risk assessment may provide some theoretical support for national and regional governmental strategies for disaster prevention and reduction.

Improvement to flooding risk assessment of storm surges by residual interpolation in the coastal areas of Guangdong Province, China

2017 ◽  
Vol 453 ◽  
pp. 1-14 ◽  
Author(s):  
Xina Wang ◽  
Xianwei Wang ◽  
Jianqing Zhai ◽  
Xiucang Li ◽  
Huabing Huang ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Storm Surges ◽  
Guangdong Province ◽  
Coastal Areas ◽  
Flooding Risk

Risk assessment for dangerous sections of the levees: A case study in Guangdong Province, China

2020 ◽  
Vol 185 ◽  
pp. 105061
Author(s):  
Xinchi Chen ◽  
Dong Huang ◽  
Xiaohong Chen ◽  
Weihang Lian ◽  
Lizhong Gu ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Guangdong Province

scholarly journals Observational Study on the Characteristics of the Boundary Layer during Changes in the Intensity of Tropical Cyclones Landing in Guangdong, China

2019 ◽  
Vol 2019 ◽  
pp. 1-14
Author(s):  
Fei Liao ◽  
Ran Su ◽  
Pak-Wai Chan ◽  
Yanbin Qi ◽  
Kai-Kwong Hon
Keyword(s):  
Boundary Layer ◽  
Angular Momentum ◽  
Tropical Cyclone ◽  
Tropical Cyclones ◽  
Wind Velocity ◽  
Guangdong Province ◽  
Height Range ◽  
Maximum Wind ◽  
Tangential Wind ◽  
Radial Outflow

Eleven tropical cyclones that landed in Guangdong Province since 2012 and experienced strengthening or weakening over the offshore area were studied. Since the structure of the tropical cyclone boundary layer significantly influences the variation of the intensity of the cyclone, continuous observations of the wind profile radar at a coastal radar station in Guangdong Province were combined with aircraft observation data of the No. 1604 “Nida” cyclone to analyse the variations in the distributions of the radial wind, tangential wind, and angular momentum in the typhoon boundary layer and the similarities and differences between the boundary layers of the 11 tropical cyclones during the strengthening or weakening of their intensities. The analysis results show that the presence of the supergradient wind and the enhancement effect of the radial inflow play important roles in enhancing the intensity of a tropical cyclone. The observations indicate that when the tangential wind velocity in the maximum wind velocity radius reaches the velocity of the supergradient wind and when the radial inflow either gradually increases towards the centre of the tropical cyclone or gradually covers the entire boundary layer, the angular momentum tends to be shifted towards the centre. At this time, the maximum radial inflow, maximum tangential wind, and maximum angular momentum are in the same height range in the vertical direction. When a strong radial outflow occurs in the boundary layer of a tropical cyclone or the area with maximum wind velocity is located in the air outflow, the angular momentum cannot easily be transported towards the centre of the typhoon. Therefore, the spatial configuration of the three physical quantities will determine future changes in the intensity of tropical cyclones. The scope of the results presented here is limited to the 11 selected cases and suggests extending the analysis to more data.

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