Marine Disaster Risk Assessment and Zoning in the Coastal Areas of - - PowerPoint PPT Presentation

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Marine Disaster Risk Assessment and Zoning in the Coastal Areas of China National Marine Hazard Mitigation Service, State Oceanic Administration 2014. 02 Chengdu Outline Marine disaster in China 1 Marine disasters risk assessment and

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2014. 02 Chengdu

Marine Disaster Risk Assessment and Zoning in the Coastal Areas of China

National Marine Hazard Mitigation Service, State Oceanic Administration

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Outline

1 Marine disasters risk assessment and zoning 2 Intent Cooperation 3 Marine disaster in China

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Friday, June 27, 2014 http://www.etcsoa.gov.cn 3 Yellow Sea East China Sea South China Sea Tsunami Ocean Wave Red tide Sea Ice Storm surge Bohai Sea Oil spill

1.Marine disaster in China

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9/1/1905，Shanghai, more than 20000 people were killed 8/2/1922, Shantou, more than 70000 people were killed 9/2/1937, Hongkong, more 11000 people were killed 8/30/1939，Lianyungang, More than 13000 people were killed

1.Marine disaster in China

Storm surge disaster

8/2/1956, Xiangshan, 3403 people were killed

Before 1949 After 1949

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In 1781, Tsunami hit Taiwan Strait, about 40000~50000 people were killed, more than 20 countrysides were completely destroyed!

1.Marine disaster in China

Tsunami

In 1969, the whole Bohai Bay were frozen, lasted for 3 months, 58 cargo ships were destroyed , two oil platforms were knocked down!

Sea Ice

Bohai big frozen！ Average ice thickness was more than 50cm!

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91.25% 1.71% 4.6% 1.02% 1.42% Storm Surge, 840 persons Ocean Wave, 1361 persons 61.84% 38.16% Storm Surge, ￥128.8 billion

1.Marine disaster in China

Death

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County level

storm surge
ocean wave
tsunami
sea ice
sea-level rise

four‐level marine disaster risk assessment City level Provincial National

2. Marine disasters risk assessment and zoning

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Dataset Collecting Hazards analysis Risk analysis Risk zoning Validation Risk Mapping Select area, collect multi source data Model building and verification, hazards analysis Vulnerability analysis, mitigation ability assessment, comprehensive risk assessment Determine the risk level Based on the assessment results and units Validate the result by spot surveying and investigating Cartography based on the results

Workflow：

2. Marine disasters risk assessment and zoning

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Storm surge disaster risk zoning
Tsunami disaster risk zoning
2. Marine disasters risk assessment and zoning

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2.1 Storm surge disaster risk zoning

10年一遇 100年一遇 1000a 10a 100a 50a Hazards intensity analysis in China：each 10km shore Typical return periods

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重现期/年

Extremely large SSD

Return period

Large SSD General SSD Serious SSD

Occurrence frequency analysis in China：each 10km shore

2.1 Storm surge disaster risk zoning

Different storm surge disaster(SSD) scale

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 County-level risk zoning map in coastal areas

2.1 Storm surge disaster risk zoning

Hazards level

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150 300 75 km

Vmax (m/s)

m/s

70 20 40 60 80 100 10 20 30 40 (m/s) (h)

 FVCOM+SWAN  Gird size：50~100M

Typhoon scale probable maximum Inundated area

TC Track Validation result

Storm surge disaster risk zoning in Lianjiang

2.1 Storm surge disaster risk zoning

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Inundated emergency shelters：14/145,9.65%

Emergency shelter

2.1 Storm surge disaster risk zoning

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台风等级风暴潮全溃堤可能最大居民点淹没图

Inundated settlements：494/1633，30.25%

Settlements

2.1 Storm surge disaster risk zoning

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 Hypocentres  Accurate simulation in near shore  Maximum Wave height  County-level Tsunami hazards zoning map

2.2 Tsunami disaster risk zoning

Hazards level

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连江县海啸淹没与疏散图

Probable maximum Inundated area in Lianjiang

Fish farming area in Mabi Town Ke men Town（power plant, coal base, Kemen Port） Xiao ao Town (Densely populated areas)）

2.2 Tsunami disaster risk zoning

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Large scale evacuation route map: Probable maximum inundated areas Shelters distribution

2.2 Tsunami disaster risk zoning

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‘3.11’earthquake Tsunami

We are facing tsunami disaster…… We are facing tsunami disaster……

3.Intent cooperation

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We are facing storm surge disaster…… We are facing storm surge disaster……

Typhoon Usagi storm surge disaster

3.Intent cooperation

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 Storm surge disaster risk analysis technical cooperation  Tsunami disaster risk assessment in South China Sea  ……  Storm surge disaster risk analysis technical cooperation  Tsunami disaster risk assessment in South China Sea  ……

What shall we do What shall we do

3.Intent cooperation

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