Tropical Cyclones in 1992
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FAA REPORT.Wpd
INVESTIGATION OF EVENTS SURROUNDING THE CAPSIZE OF THE DRILLSHIP SEACREST VOLUME 1 OF 2 Prepared for: Looi Eng Leong Unocal Thailand, Ltd. Unocal Legal Department Central Plaza Office Building Bangkok 10900, Thailand Prepared by: Robert Taylor, P.E Vince Cardone, Ph.D. John Kokarakis, Ph.D. Jon Petersen, Ph.D. Brian Picard Gary Whitehouse Failure Analysis Associates®, Inc. 149 Commonwealth Drive Menlo Park, California 94025 October 1990 EXECUTIVE SUMMARY At the request of Unocal Thailand's legal department, Failure Analysis Associates®, Inc. (FaAA) performed an investigation and analysis of events related to the loss of the drillship Seacrest. The scope of the investigation encompassed the analysis of: the physical condition and design of the ship; the weather and the affect on the dynamic response of the ship; the search and rescue effort; and safety training and operating procedures. This report covers the results of this investigation. On November 3, 1989, the drillship Seacrest capsized in Unocal's Platong Gas Field during Typhoon Gay. The Seacrest had a crew of 97 at the time of the incident and six survived the event. The cause of the capsize is attributed to the severe weather conditions encountered by the ship during the storm. A detailed stability review was performed as part of the investigation. The ship was designed, built, and operated in accordance with American Bureau of Shipping (ABS) Standards. In 1988, the ship was modified to include a top drive unit. The stability effect of this modification was analyzed, and it was found that stability improved due to conversion of the No. -
Effects of Landfall Location and the Approach Angle of a Cyclone Vortex Encountering a Mesoscale Mountain Range
SEPTEMBER 2011 L I N A N D S A V A G E 2095 Effects of Landfall Location and the Approach Angle of a Cyclone Vortex Encountering a Mesoscale Mountain Range YUH-LANG LIN Department of Physics, and Department of Energy & Environmental Systems, and NOAA ISET Center, North Carolina A&T State University, Greensboro, North Carolina L. CROSBY SAVAGE III Wind Analytics, WindLogics, Inc., St. Paul, Minnesota (Manuscript received 3 November 2010, in final form 30 April 2011) ABSTRACT The orographic effects of landfall location, approach angle, and their combination on track deflection during the passage of a cyclone vortex over a mesoscale mountain range are investigated using idealized model simulations. For an elongated mesoscale mountain range, the local vorticity generation, driving the cyclone vortex track deflection, is more dominated by vorticity advection upstream of the mountain range, by vorticity stretching over the lee side and its immediate downstream area, and by vorticity advection again far downstream of the mountain as it steers the vortex back to its original direction of movement. The vorticity advection upstream of the mountain range is caused by the flow splitting associated with orographic blocking. It is found that the ideally simulated cyclone vortex tracks compare reasonably well with observed tracks of typhoons over Taiwan’s Central Mountain Range (CMR). In analyzing the relative vorticity budget, the authors found that jumps in the vortex path are largely governed by stretching on the lee side of the mountain. Based on the vorticity equation, this stretching occurs where fluid columns descend the lee slope so that the rate of stretching is governed mostly by the flow speed and the terrain slope. -
Chapter 2.1.3, Has Both Unique and Common Features That Relate to TC Internal Structure, Motion, Forecast Difficulty, Frequency, Intensity, Energy, Intensity, Etc
Chapter Two Charles J. Neumann USNR (Retired) U, S. National Hurricane Center Science Applications International Corporation 2. A Global Tropical Cyclone Climatology 2.1 Introduction and purpose Globally, seven tropical cyclone (TC) basins, four in the Northern Hemisphere (NH) and three in the Southern Hemisphere (SH) can be identified (see Table 1.1). Collectively, these basins annually observe approximately eighty to ninety TCs with maximum winds 63 km h-1 (34 kts). On the average, over half of these TCs (56%) reach or surpass the hurricane/ typhoon/ cyclone surface wind threshold of 118 km h-1 (64 kts). Basin TC activity shows wide variation, the most active being the western North Pacific, with about 30% of the global total, while the North Indian is the least active with about 6%. (These data are based on 1-minute wind averaging. For comparable figures based on 10-minute averaging, see Table 2.6.) Table 2.1. Recommended intensity terminology for WMO groups. Some Panel Countries use somewhat different terminology (WMO 2008b). Western N. Pacific terminology used by the Joint Typhoon Warning Center (JTWC) is also shown. Over the years, many countries subject to these TC events have nurtured the development of government, military, religious and other private groups to study TC structure, to predict future motion/intensity and to mitigate TC effects. As would be expected, these mostly independent efforts have evolved into many different TC related global practices. These would include different observational and forecast procedures, TC terminology, documentation, wind measurement, formats, units of measurement, dissemination, wind/ pressure relationships, etc. Coupled with data uncertainties, these differences confound the task of preparing a global climatology. -
Hagåtña Master Plan
HAGATNA RESTORATION & REDEVELOPMENT AUTHORITY Hagåtña Master Plan PHASE 1 - RESEARCH REPORT JULY 15, 2005 Prepared By Hagåtña Master Plan Table of Contents Historical and Cultural Research Overview……………………………..2 Historical and Cultural Research Resource List…………………………..3 Economic Development Research Overview…………………………….4 Physical Characteristics Research Overview………………………………5 Physical Characteristics Overview and Resource List…………………….6 Maps of Hagåtña……………………………………………………………7 Infrastructure Engineering Resource List………………………………….11 Preliminary Assessment Infrastructure System Report…………………..12 Environmental Research Resource List……………………………………18 Preliminary Conditions Assessment Environmental Planning Report….19 1 Hagåtña Master Plan Historical and Cultural Research Historical and Cultural Research Overview During this research and data collection phase, historical and cultural resources have been listed together because of their natural correlation to each other. Included are graphics, written and oral histories, maps and photographs that help to illustrate the character, physical proportions, iconography, configurations and sequences of the street life in Hagåtña during the periods of; early history, pre-war and colonial times, wartime, post war and then into contemporary periods. The cultural resources gathered recount life in the city and how the Hagåtña residents and islandwide residents used and interacted in the city. Two groupings of activities became evident: the normal day-to-day activities of the city and then the importance of special events. As the seat of the Spanish colonial government, the US Military government of the island, and then into the civilian government special events included inaugurations, religious festivals like the “Santa Maria de la Camarin” procession and the village fiesta, school ceremonies and graduations, the post-war Liberation day parades and carnivals. The conventional pre-war day-to-day events again included activities related to the Catholic Church, and political events. -
Special Traffic and Transport Arrangements for Hong Kong Cyclothon
TRANSPORT DEPARTMENT NOTICE SPECIAL TRAFFIC AND TRANSPORT ARRANGEMENTS FOR HONG KONG CYCLOTHON Notice is hereby given that special traffic and transport arrangements will be implemented on 10 October 2015 (Saturday) and 11 October 2015 (Sunday) to facilitate the holding of the Hong Kong Cyclothon: I. TRAFFIC ARRANGEMENTS FOR THE RACES ON 10 OCTOBER 2015 (Please refer to Plan 1) (A) Road Closures The following major roads will be closed to all vehicular traffic at the time specified below (except vehicles with closed road permits issued by the Transport Department): From 4 pm on 10 October 2015 to about 1.00 am on 11 October 2015 (depending on the actual finishing time of the race, and complete clearance for safe re-opening of roads to vehicular traffic): (i) Both bounds of Hung Hom Bypass between Hung Hom Road and Salisbury Road ; (ii) Princess Margaret Road Link southbound between Metropolis Drive and Hung Hom Bypass; (iii) Salisbury Road westbound between Chatham Road South and Cheong Wan Road; (iv) Both bounds of Salisbury Road Underpass; (v) Salisbury Road southbound between Cross Harbour Tunnel Administration Building and Science Museum Road; (vi) Both bounds of Mody Lane; (vii) Both bounds of Mody Road between Mody Lane and Science Museum Road; (viii) Salisbury Road eastbound between Chatham Road South and entrance of the Tsim Sha Tsui East (Mody Road) Bus Terminus. (except slow lane for exclusive use of franchised bus only); (ix) Science Museum Road northbound between Salisbury Road and Science Museum Square. (x) The 3rd and 4th lanes of Salisbury Road eastbound between Nathan Road and Chatham Road South; and (xi) The 4th and 5th lanes of Salisbury Road westbound between Nathan Road and Chatham Road South. -
A Climatology of Tropical Cyclone Size in the Western North Pacific Using an Alternative Metric Thomas B
Florida State University Libraries Electronic Theses, Treatises and Dissertations The Graduate School 2017 A Climatology of Tropical Cyclone Size in the Western North Pacific Using an Alternative Metric Thomas B. (Thomas Brian) McKenzie III Follow this and additional works at the DigiNole: FSU's Digital Repository. For more information, please contact [email protected] FLORIDA STATE UNIVERSITY COLLEGE OF ARTS AND SCIENCES A CLIMATOLOGY OF TROPICAL CYCLONE SIZE IN THE WESTERN NORTH PACIFIC USING AN ALTERNATIVE METRIC By THOMAS B. MCKENZIE III A Thesis submitted to the Department of Earth, Ocean and Atmospheric Science in partial fulfillment of the requirements for the degree of Master of Science 2017 Copyright © 2017 Thomas B. McKenzie III. All Rights Reserved. Thomas B. McKenzie III defended this thesis on March 23, 2017. The members of the supervisory committee were: Robert E. Hart Professor Directing Thesis Vasubandhu Misra Committee Member Jeffrey M. Chagnon Committee Member The Graduate School has verified and approved the above-named committee members, and certifies that the thesis has been approved in accordance with university requirements. ii To Mom and Dad, for all that you’ve done for me. iii ACKNOWLEDGMENTS I extend my sincere appreciation to Dr. Robert E. Hart for his mentorship and guidance as my graduate advisor, as well as for initially enlisting me as his graduate student. It was a true honor working under his supervision. I would also like to thank my committee members, Dr. Vasubandhu Misra and Dr. Jeffrey L. Chagnon, for their collaboration and as representatives of the thesis process. Additionally, I thank the Civilian Institution Programs at the Air Force Institute of Technology for the opportunity to earn my Master of Science degree at Florida State University, and to the USAF’s 17th Operational Weather Squadron at Joint Base Pearl Harbor-Hickam, HI for sponsoring my graduate program and providing helpful feedback on the research. -
7 the Analysis of Storm Surge in Manila Bay, the Philippines
INTERNATIONAL HYDROGRAPHIC REVIEW MAY 2019 THE ANALYSIS OF STORM SURGE IN MANILA BAY, THE PHILIPPINES By Commander C. S. Luma-ang Hydrography Branch, National Mapping and Resource Information Authority, (Philippines) Abstract In 2013, Typhoon Haiyan produced a storm surge over seven metres in San Pedro Bay in the Philippines that killed approximately 6,300 people. The event created significant public awareness on storm surges and exposed the lack of records and historical research in the Philippines. This study investigated the tidal height records during intense cyclone activities in 2016 and 2017 to provide accurate information about storm surge development in the largest and most populated coastal area in the country – Manila Bay. The results of this investigation indicated that there are consistencies in the characteristics of tropical cyclones that produce larger storm surges. The results also show that actual storm surge heights are generally smaller than predicted height values. Résumé En 2013, le typhon Haiyan a provoqué une onde de tempête de plus de sept mètres dans la Baie de San Pedro aux Philippines, faisant près de 6 300 victimes. Cet événement a provoqué une importante sensibilisation du public envers les ondes de tempête et a mis en évidence le manque d’archives et de recherches historiques aux Philippines. La présente étude a examiné les enregistrements des hauteurs des marées au cours d’activités cycloniques intenses en 2016 et 2017 afin de fournir des informations précises sur le développement d’ondes de tempête dans la zone côtière la plus étendue et la plus peuplée du pays, la Baie de Manille. -
The St·Ructural Evolution Oftyphoo S
NSF/ NOAA ATM 8418204 ATM 8720488 DOD- NAVY- ONR N00014-87-K-0203 THE ST·RUCTURAL EVOLUTION OFTYPHOO S by Candis L. Weatherford SEP 2 6 1989 Pl.-William M. Gray THE STRUCTURAL EVOLUTION OF TYPHOONS By Candis L. Weatherford Department of Atmospheric Science Colorado State University Fort Collins, CO 80523 September, 1989 Atmospheric Science Paper No. 446 ABSTRACT A three phase life cycle characterizing the structural evolution of typhoons has been derived from aircraft reconnaissance data for tropical cyclones in the western North Pacific. More than 750 aircraft reconnaissance missions at 700 mb into 101 northwest Pacific typhoons are examined. The typical life cycle consists of the fol lowing: phase 1) the entire vortex wind field builds as the cyclone attains maximum intensity; phase 2) central pressure fills and maximum winds decrease in association with expanding cyclone size and strengthening of outer core winds; and phase 3) the wind field of the entire vortex decays. Nearly 700 aircraft radar reports of eyewall diameter are used to augment anal yses of the typhoon's life cycle. Eye characteristics and diameter appear to reflect the ease with which the maximum wind field intensifies. On average, an eye first appears with intensifying cyclones at 980 mb central pressure. Cyclones obtaining an eye at pressures higher than 980 mb are observed to intensify more rapidly while those whose eye initially appears at lower pressures deepen at slower rates and typ ically do not achieve as deep a central pressure. The eye generally contracts with intensification and expands as the cyclone fills, although there are frequent excep tions to this rule due to the variable nature of the eyewall size. -
Regional Tropical Cyclone Impact Functions for Globally Consistent Risk Assessments
Research Collection Journal Article Regional tropical cyclone impact functions for globally consistent risk assessments Author(s): Eberenz, Samuel; Lüthi, Samuel; Bresch, David N. Publication Date: 2021-01 Permanent Link: https://doi.org/10.3929/ethz-b-000468253 Originally published in: Natural Hazards and Earth System Sciences 21(1), http://doi.org/10.5194/nhess-21-393-2021 Rights / License: Creative Commons Attribution 4.0 International This page was generated automatically upon download from the ETH Zurich Research Collection. For more information please consult the Terms of use. ETH Library Nat. Hazards Earth Syst. Sci., 21, 393–415, 2021 https://doi.org/10.5194/nhess-21-393-2021 © Author(s) 2021. This work is distributed under the Creative Commons Attribution 4.0 License. Regional tropical cyclone impact functions for globally consistent risk assessments Samuel Eberenz1,2, Samuel Lüthi1,2, and David N. Bresch1,2 1Institute for Environmental Decisions, ETH Zurich, Zurich, 8092, Switzerland 2Federal Office of Meteorology and Climatology MeteoSwiss, Zurich-Airport, 8058, Switzerland Correspondence: Samuel Eberenz ([email protected]) Received: 9 July 2020 – Discussion started: 26 August 2020 Revised: 30 November 2020 – Accepted: 17 December 2020 – Published: 29 January 2021 Abstract. Assessing the adverse impacts caused by tropical regional impact functions are available online as a Python cyclones has become increasingly important as both climate package ready for application in practical contexts like phys- change and human coastal development increase the damage ical risk disclosure and providing more credible information potential. In order to assess tropical cyclone risk, direct eco- for climate adaptation studies. nomic damage is frequently modeled based on hazard inten- sity, asset exposure, and vulnerability, the latter represented by impact functions. -
Guam Case Study
The U.S. Territory of Guam is the largest and southernmost island in the Mariana Islands archipelago. It is located in the western Pacific Ocean, south of Japan. The island of Guam, while only 209 square miles in size, is densely populated with 140,000 residents. Many tropical storms, known as typhoons, form in the western Pacific Ocean, and in the past 50 years, more than 25 of these storms have struck the island. C a s e SGUAM t u d i e s MITIGATION Case Studies Guam Memorial Hospital Guam is also in a seismically active zone. The strongest earthquake to hit the island in recent times was of magnitude 8.3, which violently shook the island in 1993. On December 16-17, 1997, Typhoon Paka, noted as one of the most powerful storms of the 20th Century, directly struck the island of Guam with sustained winds of 150 mph and gusts to 185 mph. Paka’s winds impacted the island for a full 12 hours, creating a much longer than usual timeframe for wind, rain, and storm surges to cause damage. The northern and central sections of the island sustained severe and widespread damage to homes, the island’s power distribution grid and public utilities, privately owned buildings, and many other structures. Guam Memorial Hospital (GMH) is the only public inpatient facility on the island. GMH is the only healthcare facility that remains open during and immediately after typhoons. GMS becomes Guam Memorial Hospital before and after mitigation. C a s e SGUAM t u d i e s2 MITIGATION Case Studies Guam Memorial Hospital the only dialysis unit, the only lab, and the only source of medical oxygen. -
Official Record of Proceedings
HONG KONG LEGISLATIVE COUNCIL — 9 November 1994 743 OFFICIAL RECORD OF PROCEEDINGS Wednesday, 9 November 1994 The Council met at half-past Two o'clock PRESENT THE PRESIDENT THE HONOURABLE JOHN JOSEPH SWAINE, C.B.E., LL.D., Q.C., J.P. THE CHIEF SECRETARY THE HONOURABLE MRS ANSON CHAN, C.B.E., J.P. THE FINANCIAL SECRETARY THE HONOURABLE SIR NATHANIEL WILLIAM HAMISH MACLEOD, K.B.E., J.P. THE ATTORNEY GENERAL THE HONOURABLE JEREMY FELL MATHEWS, C.M.G., J.P. THE HONOURABLE ALLEN LEE PENG-FEI, C.B.E., J.P. THE HONOURABLE MRS SELINA CHOW LIANG SHUK-YEE, O.B.E., J.P. THE HONOURABLE HUI YIN-FAT, O.B.E., J.P. THE HONOURABLE MARTIN LEE CHU-MING, Q.C., J.P. DR THE HONOURABLE DAVID LI KWOK-PO, O.B.E., LL.D., J.P. THE HONOURABLE PANG CHUN-HOI, M.B.E. THE HONOURABLE SZETO WAH THE HONOURABLE TAM YIU-CHUNG THE HONOURABLE ANDREW WONG WANG-FAT, O.B.E., J.P. THE HONOURABLE EDWARD HO SING-TIN, O.B.E., J.P. THE HONOURABLE RONALD JOSEPH ARCULLI, O.B.E., J.P. THE HONOURABLE MARTIN GILBERT BARROW, O.B.E., J.P. 744 HONG KONG LEGISLATIVE COUNCIL — 9 November 1994 THE HONOURABLE MRS PEGGY LAM, O.B.E., J.P. THE HONOURABLE MRS MIRIAM LAU KIN-YEE, O.B.E., J.P. THE HONOURABLE LAU WAH-SUM, O.B.E., J.P. DR THE HONOURABLE LEONG CHE-HUNG, O.B.E., J.P. THE HONOURABLE JAMES DAVID McGREGOR, O.B.E., I.S.O., J.P. -
MASARYK UNIVERSITY BRNO Diploma Thesis
MASARYK UNIVERSITY BRNO FACULTY OF EDUCATION Diploma thesis Brno 2018 Supervisor: Author: doc. Mgr. Martin Adam, Ph.D. Bc. Lukáš Opavský MASARYK UNIVERSITY BRNO FACULTY OF EDUCATION DEPARTMENT OF ENGLISH LANGUAGE AND LITERATURE Presentation Sentences in Wikipedia: FSP Analysis Diploma thesis Brno 2018 Supervisor: Author: doc. Mgr. Martin Adam, Ph.D. Bc. Lukáš Opavský Declaration I declare that I have worked on this thesis independently, using only the primary and secondary sources listed in the bibliography. I agree with the placing of this thesis in the library of the Faculty of Education at the Masaryk University and with the access for academic purposes. Brno, 30th March 2018 …………………………………………. Bc. Lukáš Opavský Acknowledgements I would like to thank my supervisor, doc. Mgr. Martin Adam, Ph.D. for his kind help and constant guidance throughout my work. Bc. Lukáš Opavský OPAVSKÝ, Lukáš. Presentation Sentences in Wikipedia: FSP Analysis; Diploma Thesis. Brno: Masaryk University, Faculty of Education, English Language and Literature Department, 2018. XX p. Supervisor: doc. Mgr. Martin Adam, Ph.D. Annotation The purpose of this thesis is an analysis of a corpus comprising of opening sentences of articles collected from the online encyclopaedia Wikipedia. Four different quality categories from Wikipedia were chosen, from the total amount of eight, to ensure gathering of a representative sample, for each category there are fifty sentences, the total amount of the sentences altogether is, therefore, two hundred. The sentences will be analysed according to the Firabsian theory of functional sentence perspective in order to discriminate differences both between the quality categories and also within the categories.