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1 Storm Surge in Seto Inland Sea with Consideration Of
STORM SURGE IN SETO INLAND SEA WITH CONSIDERATION OF THE IMPACTS OF WAVE BREAKING ON SURFACE CURRENTS Han Soo Lee1, Takao Yamashita1, Tomoaki Komaguchi2, and Toyoaki Mishima3 Storm surge and storm wave simulations in Seto Inland Sea (SIS) in Japan were conducted for Typhoon Yancy (9313) and Chaba (0416) using an atmosphere (MM5)-wave (SWAN)-ocean (POM) modeling system. In the coupled modeling system, a new method for wave-current interaction in terms of momentum transfer due to whitecapping in deep water and depth-induced wave breaking in shallow water was considered. The calculated meteorological and wave fields show good agreement with the observations in SIS and its vicinities. The storm surge results also exhibit good accordance with the observations in SIS. To resolve a number of islands in SIS, we also performed numerical experiments with different grid resolutions and obtained improved results from higher resolutions in wave and ocean circulation fields. Keywords: Seto Inland Sea; storm surge; atmosphere-wave-ocean coupled model; air-sea interaction; whitecapping; depth-induced wave breaking INTRODUCTION Storm surge due to tropical cyclones (TCs) varies from place to place depending on the geographical features of the place we are interested in such as the effect of surrounding topography on meteorological fields, geographical shape of the bay or harbor, underwater bathymetry, tide, and interaction with other water bodies including rivers and open seas and oceans. In the storm surge modeling it is difficult to consider all of these effects such that we have to compromise some of them for simplifying a problem, more efficient modeling and engineering purpose. -
The 14Th Asia Pacific Conference on Disaster Medicine in Kobe, Japan: a Brief Overview and a Proposal
Abstracts of Poster-Presentations-WADEM Congress on Disaster and Emergency Medicine 2019 POSTER PRESENTATIONS 2018 Natural Disaster Response in Japan The 14th Asia Pacific Conference on Disaster Medicine in Dr. Hisayoshi Kondo, Dr. Yuichi Koido, Dr. Hirotaka Uesgi, Kobe, Japan: A Brief Overview and a Proposal Dr. Yoshitaka Kohayagawa, Dr. Ayako Takahashi, Dr. Shinichi Nakayama1, Dr. Takashi Ukai1, Dr. Yuzuru Kawashima, Dr. Miho Misaki, Ms Kayako Chishima, Dr. Shuichi Kozawa1, Dr. Tetsunori Kawase1, Mr. Yoshiki Toyokuni Dr. Satoshi Ishihara1, Dr. Soichiro Kai Kai1, Dr. Ryoma Kayano2, National Disaster Medical Center of Japan, Tachikawa, Japan Dr. Tatsuro Kai3 1. Hyogo Emergency Medical Center, Kobe, Japan Introduction: Japan experienced several major disasters in 2. The WHO Center for Health Development (WHO Kobe 2018. Center), Kobe, Japan Aim: Evaluation of medical response was conducted and prob- 3. Osaka Saiseikai Senri Hospital, Osaka lems determined to solve for future response. Methods: An evaluation conducted on DMAT responding Introduction: The Asia Pacific Conference on Disaster report of Northern Osaka Earthquake, West Japan Torrential Medicine (APCDM) started in 1988 in Osaka, Japan, and the Rain Disaster, Typhoon Jebi, and Hokkaido Iburi East 14th conference was held from October 16-182, 2018, in Kobe. Earthquake. Aim: To give a rundown of the 14th APCDM and a proposal Results: DMAT responded 58 teams for Osaka Northern for WADEM. Earthquake, 119 teams for West Japan Torrential Rain Methods: Retrospective analysis of participants, the category of Disaster, 17 teams for Typhoon Jebi, 67 teams for Hokkaido presentations, and deliverables. Iburi East Earthquake. At the Osaka Northern Earthquake, Results: With “Building Bridges for Disaster Preparedness and by comparing the report of seismic diagnosis, results and, a Response” as its main theme, the 14th APCDM was held near magnitude of each region, hospital damage was evaluated. -
Toward the Establishment of a Disaster Conscious Society
Special Feature Consecutive Disasters --Toward the Establishment of a Disaster Conscious Society-- In 2018, many disasters occurred consecutively in various parts of Japan, including earthquakes, heavy rains, and typhoons. In particular, the earthquake that hit the northern part of Osaka Prefecture on June 18, the Heavy Rain Event of July 2018 centered on West Japan starting June 28, Typhoons Jebi (1821) and Trami (1824), and the earthquake that stroke the eastern Iburi region, Hokkaido Prefecture on September 6 caused damage to a wide area throughout Japan. The damage from the disaster was further extended due to other disaster that occurred subsequently in the same areas. The consecutive occurrence of major disasters highlighted the importance of disaster prevention, disaster mitigation, and building national resilience, which will lead to preparing for natural disasters and protecting people’s lives and assets. In order to continue to maintain and improve Japan’s DRR measures into the future, it is necessary to build a "disaster conscious society" where each member of society has an awareness and a sense of responsibility for protecting their own life. The “Special Feature” of the Reiwa Era’s first White Paper on Disaster Management covers major disasters that occurred during the last year of the Heisei era. Chapter 1, Section 1 gives an overview of those that caused especially extensive damage among a series of major disasters that occurred in 2018, while also looking back at response measures taken by the government. Chapter 1, Section 2 and Chapter 2 discuss the outline of disaster prevention and mitigation measures and national resilience initiatives that the government as a whole will promote over the next years based on the lessons learned from the major disasters in 2018. -
Consecutive Extreme Flooding and Heat Wave in Japan: Are They Becoming a Norm?
Received: 17 May 2019 Revised: 25 June 2019 Accepted: 1 July 2019 DOI: 10.1002/asl.933 EDITORIAL Consecutive extreme flooding and heat wave in Japan: Are they becoming a norm? In July 2018, Japan experienced two contrasting, yet consec- increases (Chen et al., 2004). Putting these together, one could utive, extreme events: a devastating flood in early July argue that the 2018 sequential events in southern Japan indicate followed by unprecedented heat waves a week later. Death a much-amplified EASM lifecycle (Figure 1a), featuring the tolls from these two extreme events combined exceeded strong Baiu rainfall, an intense monsoon break, and the landfall 300, accompanying tremendous economic losses (BBC: July of Super Typhoon Jebi in early September. 24, 2018; AP: July 30, 2018). Meteorological analysis on The atmospheric features that enhance the ascent and insta- these 2018 events quickly emerged (JMA-TCC, 2018; bility of the Baiu rainband have been extensively studied Kotsuki et al., 2019; Tsuguti et al., 2019), highlighting sev- (Sampe and Xie, 2010); these include the upper-level westerly eral compound factors: a strengthened subtropical anticy- jet and traveling synoptic waves, mid-level advection of warm clone, a deepened synoptic trough, and Typhoon Prapiroon and moist air influenced by the South Asian thermal low, and that collectively enhanced the Baiu rainband (the Japanese low-level southerly moisture transport associated with an summer monsoon), fostering heavy precipitation. The com- enhanced NPSH. These features are outlined in Figure 1b as prehensive study of these events, conducted within a month (A) the NPSH, and particularly its western extension; (B) the and released by the Japan Meteorological Agency (JMA) western Pacific monsoon trough; (C) the South Asian monsoon; (JMA-TCC, 2018), reflected decades of knowledge of the (D) the mid-latitude westerly jet and quasistationary short Baiu rainband and new understanding of recent heat waves waves, as well as the Baiu rainband itself; these are based on in southern Japan and Korea (Xu et al., 2019). -
H2o Retailing Corporation Financial Report 2020
H2O RETAILING CORPORATION FINANCIAL REPORT 2020 Contents FINANCIAL REPORT for the 101st fiscal term I. Overview of the Company .........................................................................................................................................2 1. Summary of business results ............................................................................................................................................. 2 2. History ............................................................................................................................................................................... 4 3. Description of business ...................................................................................................................................................... 6 4. Overview of subsidiaries and associates............................................................................................................................ 9 5. Information about employees .......................................................................................................................................... 12 II. Overview of Business .............................................................................................................................................14 1. Management policies, management environment and issues to be resolved, etc. ......................................................14 2. Business risk ......................................................................................................................................................15 -
Climate Change Impact on Precipitations Associated with Typhoons Nancy and Jebi Over Western Japan
B31 Climate change impact on precipitations associated with Typhoons Nancy and Jebi over Western Japan 〇Sridhara NAYAK , Tetsuya TAKEMI Introduction: present climate and two simulations for future The Typhoons are one of the major life-threatening climate). For future climate simulations, we used weather-related disasters that cause various MRI-AGCM3.2 climate simulations and computed the socio-economic damages over landfall region (e.g., warming increments by taking 25-year mean Takemi et al., 2016; Chen et al., 2018). Recent studies difference between the present-day simulation suggest that the typhoons in future climate may (1979-2003) and the future projection (2075-2099). become more intense and carry heavy precipitations The warming increments are added to present JRA55 (e.g., Nayak and Takemit, 2019). In September of fields before performing future climate simulations. 1961 and 2018, two very strong Typhoons known as This is hereafter referred as Pseudo Global Warming “Typhoon Nancy” and “Typhoon Jebi” respectively (PGW) experiments. We compared the results of made landfall over Western Japan with strong winds typhoon track and intensities with the Regional and extensive precipitation amounts and caused Specialized Meteorological Center (RSMC) best track significant damages over target regions. Interestingly, datasets. both typhoons made landfall around same region of Western Japan with a difference of 57 years. However, Preliminary Results: it is uncertain that whether the precipitation amounts Figure 1 shows the typhoon tracks as obtained from associated with Typhoon Jebi is a future projection of the model simulations and RSMC best track datasets. that of with Typhoon Nancy under warmer It indicates that Typhoon Nancy and Typhoon Jebi environment? If so, then what will be the future made landfall over same region (highlighted as red projection of precipitation amounts linked to Typhoon colored circle) and well reproduced by WRF model. -
Field Surveys and Numerical Simulation of the 2018 Typhoon Jebi: Impact of High Waves and Storm Surge in Semi-Enclosed Osaka Bay, Japan
Pure Appl. Geophys. 176 (2019), 4139–4160 Ó 2019 Springer Nature Switzerland AG https://doi.org/10.1007/s00024-019-02295-0 Pure and Applied Geophysics Field Surveys and Numerical Simulation of the 2018 Typhoon Jebi: Impact of High Waves and Storm Surge in Semi-enclosed Osaka Bay, Japan 1 1 2 1 1 TUAN ANH LE, HIROSHI TAKAGI, MOHAMMAD HEIDARZADEH, YOSHIHUMI TAKATA, and ATSUHEI TAKAHASHI Abstract—Typhoon Jebi made landfall in Japan in 2018 and hit 1. Introduction Osaka Bay on September 4, causing severe damage to Kansai area, Japan’s second largest economical region. We conducted field surveys around the Osaka Bay including the cities of Osaka, Annually, an average of 2.9 tropical cyclones Wakayama, Tokushima, Hyogo, and the island of Awaji-shima to (from 1951 to 2016) have hit Japan (Takagi and evaluate the situation of these areas immediately after Typhoon Esteban 2016; Takagi et al. 2017). The recent Jebi struck. Jebi generated high waves over large areas in these regions, and many coasts were substantially damaged by the Typhoon Jebi in September 2018 has been the combined impact of high waves and storm surges. The Jebi storm strongest tropical cyclone to come ashore in the last surge was the highest in the recorded history of Osaka. We used a 25 years since Typhoon Yancy (the 13th typhoon to storm surge–wave coupled model to investigate the impact caused by Jebi. The simulated surge level was validated with real data hit Japan, in 1993), severely damaging areas in its acquired from three tidal stations, while the wave simulation results trajectory. -
MEMBER REPORT Japan
MEMBER REPORT Japan ESCAP/WMO Typhoon Committee 13th Integrated Workshop Chiang Mai, Thailand 5-9 November 2018 CONTENTS I. Overview of tropical cyclones which have affected/impacted Member’s area since the last Committee Session 1. Meteorological Assessment (highlighting forecasting issues/impacts). 2. Hydrological Assessment (highlighting water-related issues/impact) 3. Socio-Economic Assessment (highlighting socio-economic and DRR issues/impacts) II. Summary of Progress in Priorities supporting Key Result Areas 1. Extension of Forecast Range and Commencement of 5-Day Tropical Cyclone Intensity Forecasts in March 2019 2. Establishment of the JETT Disaster Support System for Municipalities 3. Upgrade of Products on the RSMC Tokyo-Typhoon Center’s Numerical Typhoon Prediction Website 4. HimawariRequest: JMA’s rapid scan satellite service for WMO RA II and RA V 5. TCC products and publications related to tropical cyclones 6. Attachment Training in 2018 7. Urban Search-and-Rescue Training in Singapore as an ADRC activity for disaster reduction 8. Asian Conference on Disaster Reduction (ACDR) 2018 9. Visiting Researchers from ADRC Member Countries I. Overview of tropical cyclones which have affected/impacted Member’s area since the last Committee Session 1. Meteorological Assessment (highlighting forecasting issues/impacts) In 2018, 15 tropical cyclones (TCs) of tropical storm (TS) intensity or higher had come within 300 km of the Japanese islands as of 9 October. Japan was affected by 8 of these, with 5 making landfall. These 8 TCs are described below, and their tracks are shown in Figure 1. (1) TY Prapiroon (1807) Prapiroon was upgraded to tropical storm (TS) intensity around the sea south-southeast of Okinawa Island at 00 UTC on 29 June 2018 and moved northwestward. -
Civil Engineering
CIVIL ENGINEERING Kyoto University Structural Engineering Laboratories Katsura Campus Applied Mechanics (応用力学講座) Structural Materials Engineering (構造材料学分野) Structural Mechanics (構造力学分野) Bridge Engineering (橋梁工学分野) Structural Dynamics (構造ダイナミクス分野) International Management of Civil Infrastructure (国際環境基盤マネジメント分野) Structures Management Engineering (構造物マネジメント工学講座) Earthquake and Lifeline Engineering (地震ライフライン工学講座) Uji Campus Dynamics of Foundation Structures (耐震基礎分野) Urban Flood Control (都市耐水分野) Hydraulics and Hydrology River, Coastal, and Water Resources Engineering Laboratories Katsura Campus Applied Mechanics (応用力学講座) (See page 4) Environmental Hydrodynamics (水理環境ダイナミクス分野) Hydrology and Water Resources Research (水文・水資源学分野) Urban Coast Design (沿岸都市設計学分野) River System Engineering and Management (河川流域マネジメント工学講座) Uji Campus Erosion and Sediment Runoff Control Engineering (砂防工学分野) Hydroscience and Hydraulic Engineering (防災水工学分野) Hydrometeorological Disasters Engineering (水文気象工学分野) Coastal Disaster Prevention Engineering (海岸防災工学分野) Innovative Disaster Prevention Technology and Policy Research (防災技術政策分野) Waterfront and Marine Geohazards (水際地盤学分野) Regional Water Environment Systems (地域水環境システム分野) Water Resources Engineering (水文循環工学分野) Socio and Eco Environment Risk Management (自然・社会環境防災計画学分野) Yoshida Campus Computational Engineering (計算工学講座) 2 Geotechnical Engineering Laboratories Katsura Campus Geomechanics (地盤力学分野) Infrastructure Innovation Engineering (社会基盤創造工学分野) Construction Engineering and Management (土木施工システム工学分野) Geofront System Engineering -
Intensification and Structure Change of Super Typhoon Flo As Related to the Large-Scale Environment
N PS ARCHIVE 1998.06 TITLEY, D. NAVAL POSTGRADUATE SCHOOL Monterey, California DISSERTATION INTENSIFICATION AND STRUCTURE CHANGE OF SUPER TYPHOON FLO AS RELATED TO THE LARGE-SCALE ENVIRONMENT by David W. Titley June 1998 Dissertation Supervisor: Russell L. Elsberry Thesis T5565 Approved for public release; distribution is unlimited. -EYKNC . •OOL DUDLEY KNOX LIBRARY NAVAL POSTGRADUATE SCHOOL MONTEREY, CA 93943-5101 REPORT DOCUMENTATION PAGE Form Approved OMB No 0704-01! Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instruction, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302, and to the Office of ManagemerJ and Budget, Paperwork Reduction Project (0704-0188) Washington DC 20503. 1. AGENCY USE ONLY (Leave blank) 2. REPORT DATE 3. REPORT TYPE AND DATES COVERED June 1998. Doctoral Dissertation 4. TITLE AND SUBTITLE Intensification and Structure Change of Super 5. FUNDING NUMBERS Typhoon Flo as Related to the Large-Scale Environment 6. AUTHOR(S) Titley, David W. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) PERFORMING Naval Postgraduate School ORGANIZATION Monterey CA 93943-5000 REPORT NUMBER 9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) 10. SPONSORING/MONITORING AGENCY REPORT NUMBER 11. SUPPLEMENTARY NOTES The views expressed in this thesis are those of the author and do not reflect the official policy or position of the Department of Defense or the U.S. -
U Ncorrected Proof
Pure Appl. Geophys. Ó 2019 Springer Nature Switzerland AG https://doi.org/10.1007/s00024-019-02295-0 Pure and Applied Geophysics 1 Field Surveys and Numerical Simulation of the 2018 Typhoon Jebi: Impact of High Waves 2 and Storm Surge in Semi-enclosed Osaka Bay, Japan 3 1 1 2 1 1 4 LE TUAN ANH, HIROSHI TAKAGI, MOHAMMAD HEIDARZADEH, YOSHIHUMI TAKATA, and ATSUHEI TAKAHASHI 5 Abstract—Typhoon Jebi made landfall in Japan in 2018 and hit 1. Introduction 39 6 Osaka Bay on September 4, causing severe damage to Kansai area, 7 Japan’s second largest economical region. We conducted field 8 surveys around the Osaka Bay including the cities of Osaka, Annually, an average of 2.9 tropical cyclones 40 Author Proof 9 Wakayama, Tokushima, Hyogo, and the island of Awaji-shima to (from 1951 to 2016) have hit Japan (Takagi and 41 10 evaluate the situation of these areas immediately after Typhoon 42 11 Esteban 2016; Takagi et al. 2017). The recent Jebi struck. Jebi generated high waves over large areas in these 43 12 regions, and many coasts were substantially damaged by the Typhoon Jebi in September 2018 has been the 13 combined impact of high waves and storm surges. The Jebi storm strongest tropical cyclone to come ashore in the last 44 14 surge was the highest in the recorded history of Osaka. We used a 45 15 25 years since Typhoon Yancy (the 13th typhoon to storm surge–wave coupled model to investigate the impact caused 46 16 by Jebi. The simulated surge level was validated with real data hit Japan, in 1993), severely damaging areas in its 17 acquired from three tidal stations, while the wave simulation results trajectory. -
Hindcast of Typhoon Jebi (2018) Storm Surge, Wave and Flood Using a Coupled Model of Surge, Wave, Wave Runup and Overtopping
Hindcast of Typhoon Jebi (2018) storm surge, wave and flood using a coupled model of surge, wave, wave runup and overtopping Sooyoul Kim, Tottori University Nobuhito Mori, Tetsuya Takemi, Tomoya Shimura, Hajime Mase Kyoto University Yoko Shibutani: Toyo Corporation Tomohiro Yasuda: Kansai University Sota Nakajo: Osaka City University Junichi Ninomiya: Kanazawa University Contents ❖ Overview ❖ Typhoon Jebi 2018 and its damage ❖ Modeling surge, wave and flood ❖ Modeling storm surge and wave in Osaka Bay ❖ Flooding at Kansai Airport Overview of Typhoon Jebi 2018 ❖ The most catastrophic tropical cyclone in Japan for five decades OsakaBay ❖ since Typhoon Nancy (1961) (so call 2nd Muroto Typhoon) ❖ Landfall on the west coast of Osaka Bay ❖ historical record-breaking wave and surge heights in the inner bay Jebi ❖ max. sea level: 3.29 m ❖ max. surge level: 2.78 m ❖ max. significant wave: 4.72 m Type to enter a caption. Exposure is extremely high below the sea level Tokyo Osaka 1.8million 1.4million 5 Summary of damage Wave overtopping, flooding Wave overtopping & river runup Wave overtopping & flooding Wave runup Wave overtopping Wave overtopping Storm surge barriers in Osaka TC Jebi 2021 Storm surge run-up river Science and Technology Inundated Kansai Airport Survey results of flooding depth ❖ 39 academics at 14 universities 6.4m and 2 institutes supported by 4.1 OsakaBay JSCE m ❖ coastal flooding mostly due to wave runup and overtopping Minami-Ashiya ❖ flooding depth: more than 6 m flooding ❖ Survey data: freely available 6.3m Due to wave overtopping ❖ http://www.coastal.jp/ja/ and runup 3.9m ❖ 2018 Typhoon Jebi Post-Event Survey of Coastal Damage in the Kansai Region, Japan Kansai Airport in Coastal Engineering Journal 2.9m ❖ Type to enter a caption.