Tropical Cyclones Affecting Tokyo and Changing Storm Surge Hazard since 1980

This study investigated tidal records and landfall tropical cyclone (TC) best tracks in Japan from 1980 to 2019 to determine changes in storm surge heights in coastal regions of eastern Japan, including Tokyo. The results indicate that annual mean storm surge heights have increased in the last 20 years (2000–2019) compared to those in 1980–1999, and that these changes are noteworthy, particularly in Tokyo Bay. The storm surge hazard potential index (SSHPI), proposed by Islam et al. (2021), is positively correlated with surge height. The temporal change analysis of SSHPI suggests that TC wind intensity and size during landfall time frame have become stronger and larger, respectively, corresponding to increasing storm surge magnitudes from 1980 to 2019. The increased occurrence frequency of TCs with more northeastward tracks is another factor that may have contributed to the increased surge hazards around Tokyo. Tokyo area is likely to experience increasing numbers of extreme storm surge events in the future, if, the current increasing tendency continues.

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Temporal Change Analysis for Characterization of Mass Lesions in Mammography

IEEE Transactions on Medical Imaging ◽

10.1109/tmi.2007.897392 ◽

2007 ◽

Vol 26 (7) ◽

pp. 945-953 ◽

Cited By ~ 51

Author(s):

S. Timp ◽

C. Varela ◽

N. Karssemeijer

Keyword(s):

Temporal Change ◽

Change Analysis ◽

Mass Lesions ◽

Temporal Change Analysis

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A 20-Year Temporal Change Analysis in Incidence, Presenting Phenotype and Mortality, in the Dutch IBDSL Cohort—Can Diagnostic Factors Explain the Increase in IBD Incidence?

Journal of Crohn s and Colitis ◽

10.1093/ecco-jcc/jjx055 ◽

2017 ◽

Vol 11 (10) ◽

pp. 1169-1179 ◽

Cited By ~ 25

Author(s):

Tim R A van den Heuvel ◽

Steven F G Jeuring ◽

Maurice P Zeegers ◽

Dorien H E van Dongen ◽

Anouk Wolters ◽

...

Keyword(s):

Temporal Change ◽

Change Analysis ◽

Temporal Change Analysis

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SENSITIVITY OF TROPICAL CYCLONE TRACK TO ASSESSMENT OF SEVERE STORM SURGE EVENT AT TOKYO BAY

Coastal Engineering Proceedings ◽

10.9753/icce.v36.papers.5 ◽

2018 ◽

pp. 5 ◽

Cited By ~ 3

Author(s):

Sota Nakajo ◽

Hideyuki Fujiki ◽

Sooyoul Kim ◽

Nobuhito Mori

Keyword(s):

Risk Assessment ◽

Storm Surge ◽

Wave Equations ◽

Tokyo Bay ◽

Cyclone Track ◽

Tropical Cyclone Track ◽

Translation Speed ◽

Long Wave ◽

Storm Surge Event ◽

Surge Height

In total 82 tropical cyclones data was used to determine scenarios of translation speed, minimum central pressure and track for risk assessment of storm surge at Tokyo Bay. The numerical simulation of waves and flows was conducted by solving non-linear long wave equations. The maximum surge height shows that the typhoon passing through along northeast directional track is dangerous for Tokyo Bay. This trend confirms the previous risk assessment was reasonable. However, it has been shown that the typhoon passing through along north directional track is also dangerous although the frequency is low. Especially, it is interesting that the typhoon passing through along northwest directional track causes distinctive resurgence and harbor oscillation.

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