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Konkuk University Climate Research Institute
Typhoon Damage Impact Assessment Typhoon Damage Impact Assessment Of Young-dong Region, KoreaOf Young-dong Region, Korea
Park, Chang yong, Graduate Student, Department of Geography, College of Science,
Konkuk University, [email protected]
1/25
Konkuk University Climate Research Institute
•Hazard can be defined as the phenomena which human beings are damaged by natural or man-made actions.
HAZARD
NATURAL MAN-MADE
IntroductionIntroduction
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Konkuk University Climate Research Institute
NATURALHAZARD
METEOROLOGICALHAZARD
GEOLOGICALHAZARD
HYDROLOGICALHAZARD
EXTRATERRESTRIALHAZARD
METEOROLOGICALHAZARD
HEAVYRAINS
HURRI-CANES
TROPICALSTORMS
TYPHO-ONS
TORNA-DOS
SNOWSTORMS
ICESTORMS
THUND-ERSTOEMS ETC.
•As the major factor of meteorological hazard occurrence, typhoon cause wind hazard and flood in Korea.
IntroductionIntroduction
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Konkuk University Climate Research Institute
Damage’s rank
YearMonth,
DayDamage factor
Refugee Loss of lifeEconomic loss
(US $)
1 2002 8.30-9.1Typhoon(RUSA)
63,085 246 5,595,562,190
2 1998 7.31-8.18 Heavy rain 24,531 324 1,402,573,821
3 1999 7.23-8.4
Heavy rain∙
Typhoon(OLGA)
25,327 67 1,204,117,835
4 2002 8.4-8.11 Heavy rain 8,107 23 997,969,509
5 1990 9.9-9.12 Heavy rain 187,265 163 821,923,520
6 1987 7.15-7.16Typhoon(THELMA)
99,516 345 671,118,420
7 1995 8.19-8.30
Heavy rain∙
Typhoon(JANIS)
24,146 65 616,932,118
8 1987 7.21-7.23 Heavy rain 50,472 167 565,126,085
9 1996 7.26-7.28 Heavy rain 16,933 29 560,158,117
10 2002 7.25-7.27 Heavy rain 54,041 128 484,347,400
Rank of meteorological hazard in Korea by economic loss
IntroductionIntroduction
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Konkuk University Climate Research Institute
Economic losses of meteorological hazard classified by the factor for the period of 1993-2002
(US $)
Etc.
6,502,382,450
4,354,683,213
48,153,303
2,104,628,786
IntroductionIntroduction
5/25
Konkuk University Climate Research Institute
•The number of typhoons are formed an annual average of twenty eight over the Northwestern Pacific Ocean.
•There come more or less 9 typhoons invaded into Korea, however, two or three typhoons affected badly or landed in Korea.
•The strong typhoon usually arrived in August and affected in the order of July and September.
IntroductionIntroduction
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Konkuk University Climate Research Institute
•Young-dong region in the Gangwon province was severely damaged due to consecutive 2 years typhoon "Rusa" in 2002 and typhoon "Maemi" in 2003.
•Generally, the number of losses of life have been decreased, while economic losses have been increased due to the development of technology.
IntroductionIntroduction
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Konkuk University Climate Research Institute8/25
The purpose of the studyThe purpose of the study
•Aimed to examine- the frequency, - the magnitude - direct/indirect damages
•Suggest to mitigate the advert impact of typhoon in the study area
Konkuk University Climate Research Institute
The study areaThe study area
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Konkuk University Climate Research Institute
•Data for grading of characteristics and impacts- precipitation, loss of life, economic loss, social impact
•Data to define total impacted areal extent - Typhoon track data
DataData
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Konkuk University Climate Research Institute
•Study period of typhoon track and the amount of precipitation are from 1974 to 2003.
•In case of typhoon damage, study period is from 1991 to 2002.
•For the amount of precipitation, data of the weather station in localized land forecast area is used.
•Sokcho, Gangneung and Daegwallyeong have existed data of whole study period, Donghae and Taebaek have exist data since 1992 and september 1985 respectively.
DataData
11/25
Konkuk University Climate Research Institute
•Typhoon magnitude generally estimate to considerate central minimum pressure or central maximum wind speed.
•These definitions show the lowest central minimum pressure and the highest wind speed during the lifetime of typhoon until from the formation to the termination of typhoon.
•Thus, these definitions lack the regionality.
MethodsMethods
12/25
Konkuk University Climate Research Institute
•It is better to use the amount of precipitation than air pressure because this study is typhoon damage impact assessment of the regional scale.
•Therefore, this study estimate the magnitude of typhoon invading in the Young-dong region using the amount of daily precipitation observed in five weather stations (Sokcho, Gangneung, Daegwallyeong, Donghae and Taebaek).
MethodsMethods
13/25
Konkuk University Climate Research Institute
•The total number of typhoons occurring in the Northwestern Pacific Ocean from 1951 to 2004 are 1,444.
•Among these, 176 events invaded in Korea. Monthly distribution of typhoons
The trend and the magnitude of typhoonThe trend and the magnitude of typhoon
14/25
Konkuk University Climate Research Institute
Yearly distribution of typhoons
Year
The trend and the magnitude of typhoonThe trend and the magnitude of typhoon
15/25
Konkuk University Climate Research Institute
•The amount of precipitation due to typhoon invading in the Young-dong region has been increasing but it is not significant statistically.
Typhoon names invading in Gangneung and the amount of precipitation
The trend and the magnitude of typhoonThe trend and the magnitude of typhoon
16/25
Konkuk University Climate Research Institute
•Frequencies of the extreme precipitation event due to typhoon have increased.
1974 -1994
1994-2003
Sokcho 3 6
Gangnueng 6 5
Daegwallyeong
5 5
Frequencies above total precipitation 200mm due to typhoon during 1974-1994 and 1994-2003
The trend and the magnitude of typhoonThe trend and the magnitude of typhoon
17/25
Konkuk University Climate Research Institute
•Typhoon "Rusa" in 2002 caused the record heavy rain of 422mm in Sokcho, 760mm in Daegwallyeong and 898mm in Gangneung.
•Therefore, the frequency and the magnitude of typhoon affecting in Young-dong region have been increasing.
1974 -1999 1999-2003
Sokcho 0 1
Gangnueng 0 2
Daegwallyeong
1 2
Frequencies above total precipitation 400mm due to typhoon during 1974-1999 and 1999-2003
The trend and the magnitude of typhoonThe trend and the magnitude of typhoon
18/25
Konkuk University Climate Research Institute
Typhoon “Rusa” track Satellite image of typhoon “Rusa”
Damage analysis in Young-dong regionDamage analysis in Young-dong region
19/25
Konkuk University Climate Research Institute
Typhoon damages in Young-dong region
Year Loss of life Refugee Economic loss (US $)
1991 4 752 7,771,240
1992 246 4,014,631
1993 1 253 34,866,558
1994 11 13 6,221,782
1995 4 69 25,837,686
1998 1 1,537,004
1999 1 22 11,649,966
2000 107 20,918,553
2002 143 41218 2,722,203,825
Damage analysis in Young-dong regionDamage analysis in Young-dong region
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Konkuk University Climate Research Institute
Classification of economic loss (US $)
Year Structure ShipAgricultural
landPublic facility Other facility
1991 2,500 8,095 7,630,681 129,963
1992 625 804 11,215 7,927,936 3,842,790
1993 106,661 49,467 1,583,790 32,315,440 811,198
1994 19,128 100,455 47,234 3,100,502 2,954,461
1995 33,466 10,008 1,966,563 23,381,067 446,581
1998 8,696 563,603 964,705
1999 191,847 25,603 11,170 5,577,536 5,250,329
2000 44,021 8,616 15,049,010 5,816,904
2002 86,810,869 329,552 301,605,035 2,121,846,282 211,612,084
Damage analysis in Young-dong regionDamage analysis in Young-dong region
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Konkuk University Climate Research Institute
•Gangneung city is damaged the most extremely.
•Typhoon "Rusa" is estimated to cause 53 losses of life and 869,565,217$ in economic loss in Gangneung city.
•Damages in Samcheok city is estimated to be 25 losses of life and 510,869,565$ in economic loss and yangyang-gun is 23 losses of life and 456,521,739$ in economic loss.
•This area has not been recovered from the impact of typhoon “Rusa” yet, however, in 2003, typhoon “Maemi” invaded again destructed severely.
Damage analysis in Young-dong regionDamage analysis in Young-dong region
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Konkuk University Climate Research Institute
•Frequencies, total amount of precipitation and heavy rain due to typhoon invading in Young-dong region have been increasing.
•Due to the advance of the hazard prevention system, the number of losses of life have decreased but economic losses have increased.
•Especially, public facilities were damaged the most extremely.
•Therefore, in order to make preparation for these situations, a hydrological system considering inflow and outflow is required.
Results and suggestionsResults and suggestions
23/25
Konkuk University Climate Research Institute
•The Korean Government adjusted construction and structure design criteria level practically due to typhoon "Rusa" in 2002 and "Maemi" in 2003.
Adjusted construction and structure design criteriaconstruction and
structure design criteria Enhanced level
Design frequency of road drainage system
5 years → 10 years
Flood design frequency (provincial river)
50~100 years → 50~200 years
Levee enlargement (slope gradient)
1:2 → 1:3
Results and suggestionsResults and suggestions
•Central government should greatly enhance construction and structure design criteria level which are consulted with experts from a variety of fields.
24/25
Konkuk University Climate Research Institute
•Rapid recover of government to be not damaged the same next the year is required.
•In order to mitigate the economic cost and the human loss, strengthening of preparedness activities such as planning, training, exercises & drills, emergency awareness & education and warming are required.
Results and suggestionsResults and suggestions
25/25
Konkuk University Climate Research Institute
Thank you for your attentionThank you for your attention