TY - JOUR
T1 - Dependency of tropical cyclone risk on track in South Korea
AU - Nam, Chaehyeon C.
AU - Park, Doo Sun R.
AU - Ho, Chang Hoi
AU - Chen, Deliang
N1 - Publisher Copyright:
© Author(s) 2018. This work is distributed under the Creative Commons Attribution 4.0 License.
PY - 2018/12/6
Y1 - 2018/12/6
N2 - Several previous studies on tropical cyclone (TC) risk assessment have attempted to quantify the relationship between TC damage and its elements (i.e. exposure, vulnerability, and hazard). For hazard parameters, TC intensity (e.g. central minimum pressure, maximum wind speed) and size information (e.g. 30 knot radius of the TC) have been widely utilized. Our risk analysis of 85 TCs that made landfall in South Korea from 1979 to 2010, however, suggests that a small deviation of the TC track in the west-east direction ( 250 km, smaller than the average radius of TC) has a more dominant effect on the extent and distribution of TC damage than TC intensity or size. This significant track dependency of TC damage exists because the TC track is responsible for the realization of hazard change from potential to active. More specifically, although two TCs may have the same intensity and size, locally experienced rainfall and wind speed can vary according to their tracks due to topography. These results suggest that track information should be considered more carefully in assessments of future TC risk.
AB - Several previous studies on tropical cyclone (TC) risk assessment have attempted to quantify the relationship between TC damage and its elements (i.e. exposure, vulnerability, and hazard). For hazard parameters, TC intensity (e.g. central minimum pressure, maximum wind speed) and size information (e.g. 30 knot radius of the TC) have been widely utilized. Our risk analysis of 85 TCs that made landfall in South Korea from 1979 to 2010, however, suggests that a small deviation of the TC track in the west-east direction ( 250 km, smaller than the average radius of TC) has a more dominant effect on the extent and distribution of TC damage than TC intensity or size. This significant track dependency of TC damage exists because the TC track is responsible for the realization of hazard change from potential to active. More specifically, although two TCs may have the same intensity and size, locally experienced rainfall and wind speed can vary according to their tracks due to topography. These results suggest that track information should be considered more carefully in assessments of future TC risk.
UR - http://www.scopus.com/inward/record.url?scp=85058172270&partnerID=8YFLogxK
U2 - 10.5194/nhess-18-3225-2018
DO - 10.5194/nhess-18-3225-2018
M3 - Article
AN - SCOPUS:85058172270
SN - 1561-8633
VL - 18
SP - 3225
EP - 3234
JO - Natural Hazards and Earth System Sciences
JF - Natural Hazards and Earth System Sciences
IS - 12
ER -