Dissertation > Excellent graduate degree dissertation topics show

Natural Disaster Risk Assessment

Author: JingZuoNa
Tutor: YinZhanE
School: Shanghai Normal University
Course: Physical Geography
Keywords: natural disaster rainstorm flood disaster risk assessment Pudong district of shanghai
CLC: X43
Type: Master's thesis
Year: 2010
Downloads: 700
Quote: 2
Read: Download Dissertation

Abstract


Natural disaster risk research is drawing extensive attention in current society and researching field, while its central topic of natural disaster risk assessment is an important foundation and way for establishing disaster-prevention-and-mitigation policies and measures. After summarizing the developments and theories of the natural disaster risk assessment, the flood disaster risk assessment is experimentally studied based on the housing and farmland of New Pudong district of Shanghai, and the results obtained are as follows:(1)Summarizing the developments of natural disaster risk assessment, it is concluded that its norm system is already pretty mature at home and abroad. However, there are still some limitations: the middle and small scale quantitative natural disaster risk assessment is not so general in China as abroad, and the hazard-affected bodies selected are very limited; all the natural disaster risk assessment studies are limited to simple addition of single-hazards due to lack of theories and methods. Thus the disaster risk assessment based on the coupled effect of multiple disasters and multiple hazard-affected bodies will become the future topic;(2)The flood disaster risk assessment of the housing of New Pudong district of Shanghai utilizes the dynamic assessment method based on six kinds of flood with different recurrence intervals. Using the remote sensing and GIS tools and the flood disaster hazard analysis, vulnerability analysis and exposure analysis methods, the study is performed on the following aspects: first, the inundation depth and area is simulated for the studying area under six kinds of flood with different recurrence intervals and maximum daily rainfall based on the flood disaster hazard analysis; Second, the correlation between the inundation depth and the damage rate of housing and indoor property for sheds, crude shacks and houses on three kinds of residential land is figured out through exposure analysis; Third, exposure analysis is conducted on inundated housing and indoor property; finally, based on the analysis above, the disaster damage situations are obtained for the sixth kinds of floods with different recurrence intervals and the average flood damage quantity is figured out for the studying area using the correlation between the transcendental probability (recurrence interval) and damage rate. Results obtained are:①the annual average damage is 58000 yuan according to the transcendental probability correlations for the flood disaster of the central region housing of the New Pudong district of Shanghai;②the maximum inundation depth is 0.6m according to simulations for the six kinds of flood with different recurrence intervals; the investment for disaster-prevention-and-mitigation is practical if money involved smaller than58000yuan. Besides, people will be safe for all the six kinds of floods with different recurrence intervals.(3) Rainstorm flood risk assessment of agriculture land-use in Pudong Xinqu District is to construct the hazard risk assessment system by analyzing hazards, vulnerability, exposure three aspects. First, simulating the relationship about inundated depth and inundated time in two kind of rainstorm scene with analyzing the rainstorm flood. Then, constructs the relationship of the crop vulnerability curve, inundated depth and inundated time by analyzing the crop types, growing manners and time, habitat circumstance. The last step is that to find out the agriculture land which is exposed to rainstorm flood. Base on the above three steps, computing each kinds of crop’s rainstorm flood risk which the crop confront by using different risk assessing models.The result of the study indicates that:①The rainstorm risk which the wheat confronts is 62.1 Yuan per hectare with precipitation of 100mm. Base on the tab. 4-2, know that the wheat will not been influence by this kind of rainstorm basically under precipitation of 232.9mm because it will not appear from May to September when the wheat is growing up;②The rainstorm risk which the vegetable confronts is 1394.6 Yuan per hectare with precipitation of 100mm. Because of lacking the distribution data, the most possible loss of vegetable is estimated at 120 Yuan per hectare under precipitation of 232.9mm. This means that the possible loss per hectare about agriculture land is 11996.4 Yuan with the probability of 0.01.

Related Dissertations

  1. Health Risk Assessment of a Brownfield Contaminated by Volatile Chlorinated Hydrocarbons and Study on Screening of Remediation Technique,X820.4
  2. Health-based and Ecological Risk Assessment of Contaminated Sites,X820.4
  3. The Prediction of Potential Suitable Distributions and Risk Assessment of the Alien Invasive Plant Flaveria Bidentis(L.) in China,S451
  4. Biotypes of Bemisia Tabaci and Resistance Risk Assessment on B Biotype to Pyriproxyfen in XinJiang,S433
  5. The Workout of Atmospheric Environmental Risk Prediction Software,TP311.52
  6. The Heavy Metals Distribution Characteristics and Risky Evaluations of Farmland Soils-Crops Around Different Types of Chemical Industrial Park,X833
  7. The Research and Construction of Ecological Risk Assessment and Warning Manage System in Typical Oilfield,X826
  8. Research of Contaminated Site Investigation and Assessment Information System for Soil,X825
  9. Risk Assessment & Spatial Distribution of Soil Nutrients and Heavy Metal in Fenhe Reservoir Surrounding,S158
  10. Xinzhou Naoyang Event Risk Management,G852.9
  11. Students' Survival Training risk management theory and empirical research,G807.4
  12. Offshore oil platform construction phase Operational Risk Management Research,F426.22
  13. Mine water inrush investigation Risk Assessment,TD745
  14. Chemical Industrial Park Environmental Risk Management Technology Source,X327
  15. BOT financing risk assessment method based on fault tree study,F283
  16. Study on Risk Identification and Evaluation of Manufacturing Green Products R & D,F205;F224
  17. Mine shaft hoisting system security risk assessment study,TD53
  18. Perfect Our Natural Disaster Relief System Research,X43
  19. The Study on Natural Disasters Rescue System in China,X43
  20. Risk Assessment of FPSO in Off-loading Operation,U698
  21. Digital Information Resources System Security Risk Assessment,G353.1

CLC: > Environmental science, safety science > Disasters and their prevention > Natural disasters and their prevention
© 2012 www.DissertationTopic.Net  Mobile