Climatic and Geomorphic Techniques and Their Application to Regional Resource Planning

Total Page:16

File Type:pdf, Size:1020Kb

Climatic and Geomorphic Techniques and Their Application to Regional Resource Planning CLIMATIC AND GEOMORPHIC TECHNIQUES AND THEIR APPLICATION TO REGIONAL RESOURCE PLANNING ^7 THOMAS WILLIAM LONEY REPORT ON A PROJECT SUBMITTED IN LIEU OP A THESIS IN PARTIAL FULFILMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE in the Department of COMMUNITY AND REGIONAL PLANNING We accept this report as conforming to the standard required from candidates for the degree of MASTER OF SCIENCE Members of the Department of Community and Regional Planning THE UNIVERSITY OF BRITISH COLUMBIA April, 1958. i ABSTRACT The human race exists and progresses by virtue of a sum of knowledge, with which it is able to maintain a measure of control over the physical world. The real wealth of any region, race or nation is drawn from the land and today much of this land is bankrupt. Through overpopulation and misuse of his natural resources, man is rapidly backing himself into an ecological trap. The solution to this problem is to inc• rease what may be termed the "carrying capacity" of the land. The only way this may be done Is by national land use planning and development of resources on a regional basis. In developing land for any purpose, man faces certain physical limitations. The two most obvious and important are climate and land forms. Throughout history these fields have been studied and today are large and complex branches of science - they have remained, however, largely separate fields. Only very recently have some advances been made in the field of climatic geomorphology. The investigators in this field have tried to show some of the complex interrelat• ionships that exist between climate and geomorphology. Unfor• tunately, although it shows great promise, most work to date has been on a highly academic level and its practical applic• ation has been piecemeal at best. This thesis is a modest attempt to define, on one hand, some fundamental interrelat• ionships between climatology and geomorphology and then, on the other hand, to apply these defined principles to selected types of resource development regions. In this presentation, it is recognized that other factors, economic, political, administrative, technological, etc. may be equally, if not more important, in determining the patterns and nature of regional resource development; these factors, however, are only referred to in passing. The overall presentation is as follows: firstly, the need for regional resource planning is discussed in the light of pertinent physical factors. This is followed by two chapters which present an introduction into climatology and land forms. In these chapters the basic concepts and terms of these fields are explained and provide the essential background for the discussion to follow. To conclude the discussion of the physical elements, the two fields are inter• related and fundamental principles applicable to regional resource development, are developed. In the next section of the paper these principles are applied to selected types of resource development regions. In this connection, two major areas of development are examined as "case studies". These areas include: (1) the Kitimat-Kemano region as an example of the development of one resource; (2) the Lower Mainland region as an example of complex resource development which is Influe• nced by a large urban area. Finally, the general applications of climatic and geomorphic principles to regional resource development which emerge from the examination of the two case studies are discussed. In presenting this thesis in partial fulfilment of the requirements for an advanced degree at the University of British Columbia, I agree that the Library shall make it freely available for reference and study. I further agree that permission for extensive copying of this thesis for scholarly purposes may be granted by the Head of my Department or by his representative. It is understood that copying or publication of this thesis for financial gain shall not be allowed without my written permission. Department of Community and Regional Planning The University of British Columbia, Vancouver 8, Canada. Date May 9th 1958 iii PREFACE The Eleventh Commandment Thou shalt inherit the Holy Earth as a faithful steward, conserving Its resources and productivity from generation to generation. Thou shalt safeguard thy fields from soil erosion; thy living waters from drying up; thy forests from desolation; and protect thy hills from overgrazing by thy herds, that thy descend• ants may have abundance forever. If any shall fail in this stewardship of the land, thy fruitful fields shall become sterile, strong ground and wasting gullies, and thy descendants shall derrease and live in poverty or perish from off the face of the earth. - 14-th British Columbia Natural Resources Conference, 19!?1. •» «• •» The writer would like to acknowledge the assistance of Mr. J.W. Wilson, Director, Lower Mainland Regional Planning Board, Professor J.F. Muir, Head of the Department of Civil Engineering, University of British Columbia, and Dr. J.L. Robinson, Head of the Department of Geography, University of British Columbia, to whom the writer owes his geographic background. Special thanks are due to Professor I.M. Robinson of the Department of Community and Regional Planning for his assistance and criticism during the preparation of this paper. iv TABLE OP CONTENTS Page ABSTRACT i ACKNOWLEDGEMENTS iii INTRODUCTION - THE INFLUENCE OF PHYSICAL FACTORS IN REGIONAL RESOURCE DEVELOPMENT The Need for Regional Resource Development 1 and Planning The Physical Setting llj. Purposes of Study 17 Data Used in Study 18 PART ONE - THE PHYSICAL ELEMENTS: CLIMATE AND LANDFO RMS Chapter I - Climatology 20 Climatic Elements and Controls 21 Climatic Variability , 26 Present Trends and Shortcomings 29 in Climatology Application of Principles 3i\. Chapter II - Geomorphology 37 Basic Concepts 37 Present Trends \\2 Application of Principles i|4 Three Essential Tools ij.7 Topographic Maps I4.7 Aerial Photographs 50 Land Classification 5l Chapter III - Climatology and Geomorphology: 55 Interrelationships and Fundamental Principles Applicable to Regional Resource Planning Introduction 55 Climatic Classification 55 Microclimates 62 Climatic Maps 61| Morphogenetic Regions 65 Principles and Areas of Study 67 PART TWO - APPLICATIONS OF PRINCIPLES TO SELECTED TYPES OF RESOURCE DEVELOPMENT REGIONS Chapter IV - Introduction: Resources and their 73 Development V Chapter V - Kitimat-Kemano Region 79 Introduction 79 Location and Description 80 Economic and Geographic Considerations 83 Physical Geographic Background 86 Climatology 86 Geomorphology 91 Vegetation and Soil 96 Influence of Physical Factors 99 upon Planning Considerations Regional Considerations 100 Townsite Planning 110 Chapter VI - The Lower Mainland Region 123 . Introduction 123 Physical Geographic Background 125 Climatology 125 Geomorphology 129 Soils and Vegetation 132. Influence of Physical Factors 135 upon Planning Considerations Regional Considerations 135 Urban Considerations li|i. Planning and the "Rural-Urban ll+5 Conflict" Lower Mainland Regional Planning l5l Board Chapter VII - Conclusions 162 Introduction 162 Conclusions 165 APPENDECES 176 BIBLIOGRAPHY 188 vi LIST OP FIGURES Page Figure 1 Unused Capacity for Forest 11 Production Figure 2 Unused Capacity for Agricultural 12 Production Figure 3 Comparative Monthly Temperature 23 in Continental and Marine Situations Figure k Accumulated Sums of Departures, An• 30 nual Precipitation, Dodge City, Kansas Figure 5> Schematic Representation of the 71 Interrelationships between Climatic, Vegetation, and Soil Types Figure 6 Morphogenetic Regions 72 Figure 7 Technology Brings New Materials 75 to the Fore Figure 8 Regional Setting of "Case Studies" 81 Figure 9 Kitimat-Kemano Development 82 Figure 10 Sketch of Kemano Development Qk QP Ir. packet- Figure 11 Kitimat - General Layout Plan 7 <- «,fc e.r,«L Figure 12 City of Vancouver, Rainfall Freque• ncy Intensity Curves Figure 13 Climatic Factors in Building Design 117 Figure Ik Lower Mainland Region 12li Figure 15 Climograph of Temperature and 126 Precipitation, Lower Mainland Region vii LIST OP TABLES Page Table 1 Monthly Precipitation Average 119 for 13 Complete Years, Covering 1902-7, 1931-IJ-3 Table 2 Monthly Mean Temperatures 120 Table 3 Monthly Precipitation and 121 Altitude of Station Table k Monthly Extremes of Temp• 122 erature, and Absolute Maximum and Minimum viii LIST OF APPENDECES Page Appendix A Specific Elements of Climate 176 Relating to Regional Resource Planning Appendix B Elements of Aerial Photo 178 Interpretation Appendix C Effects Produced by Various 182 Geomorphic Agents Appendix D Thornthwaite1s Classification 183 of Climate - Appendix E Man as a Geological Agent l8£ INTRODUCTION THE INFLUENCE OF PHYSICAL FACTORS IN REGIONAL RESOURCE DEVELOPMENT "There are two sets of ruins: one is the -work of Time, the other of Men". - Chateaubriand The Need for Regional Resource Development and Planning Throughout his short, intense history man has fought a never-ending battle with nature. Events of the late 19th Century and the first half of the 20th Century seem to indicate man has been successful in many ways; he has tamed rivers, conquered the air, explored the earth, changed its climate - indeed, what can the future possibly hold for him but an ever-broadening road towards a "super civilization"? Today man stands at the crossroads. He has begun to realize that to defeat nature is a reversible process. Even as man removes the forest to plant wheat today, he sets the stage for the floods tomorrow, as he builds his cities on the fertile plains he moves the source of his bread further away from him. Man is becoming aware of the limits of his earth. No longer is a community or country immune to the influences of the rest of the world. Perhaps the only thing linking all men is the future - the physical, social, and economic forces at work in the world today are the expression of the unfilled desires and needs of the rapidly Increasing population of the earth for the essentials of life. Conflict between men is not the result of political ideologies alone. The strength 2 of any political system will be a direct result of its ab• ility (or lack of it) to keep its people from want.
Recommended publications
  • Climate Change and Human Health: Risks and Responses
    Climate change and human health RISKS AND RESPONSES Editors A.J. McMichael The Australian National University, Canberra, Australia D.H. Campbell-Lendrum London School of Hygiene and Tropical Medicine, London, United Kingdom C.F. Corvalán World Health Organization, Geneva, Switzerland K.L. Ebi World Health Organization Regional Office for Europe, European Centre for Environment and Health, Rome, Italy A.K. Githeko Kenya Medical Research Institute, Kisumu, Kenya J.D. Scheraga US Environmental Protection Agency, Washington, DC, USA A. Woodward University of Otago, Wellington, New Zealand WORLD HEALTH ORGANIZATION GENEVA 2003 WHO Library Cataloguing-in-Publication Data Climate change and human health : risks and responses / editors : A. J. McMichael . [et al.] 1.Climate 2.Greenhouse effect 3.Natural disasters 4.Disease transmission 5.Ultraviolet rays—adverse effects 6.Risk assessment I.McMichael, Anthony J. ISBN 92 4 156248 X (NLM classification: WA 30) ©World Health Organization 2003 All rights reserved. Publications of the World Health Organization can be obtained from Marketing and Dis- semination, World Health Organization, 20 Avenue Appia, 1211 Geneva 27, Switzerland (tel: +41 22 791 2476; fax: +41 22 791 4857; email: [email protected]). Requests for permission to reproduce or translate WHO publications—whether for sale or for noncommercial distribution—should be addressed to Publications, at the above address (fax: +41 22 791 4806; email: [email protected]). The designations employed and the presentation of the material in this publication do not imply the expression of any opinion whatsoever on the part of the World Health Organization concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries.
    [Show full text]
  • Aristotle University of Thessaloniki School of Geology Department of Meteorology and Climatology
    1 ARISTOTLE UNIVERSITY OF THESSALONIKI SCHOOL OF GEOLOGY DEPARTMENT OF METEOROLOGY AND CLIMATOLOGY School of Geology 541 24 – Thessaloniki Greece Tel: 2310-998240 Fax:2310995392 e-mail: [email protected] 25 August 2020 Dear Editor We have submitted our revised manuscript with title “Fast responses on pre- industrial climate from present-day aerosols in a CMIP6 multi-model study” for potential publication in Atmospheric Chemistry and Physics. We considered all the comments of the reviewers and there is a detailed response on their comments point by point (see below). I would like to mention that after uncovering an error in the set- up of the atmosphere-only configuration of UKESM1, the piClim simulations of UKESM1-0-LL were redone and uploaded on ESGF (O'Connor, 2019a,b). Hence all ensemble calculations and Figures were redone using the new UKESM1-0-LL simulations. Furthermore, a new co-author (Konstantinos Tsigaridis), who has contributed in the simulations of GISS-E2-1-G used in this work, was added in the manuscript. Yours sincerely Prodromos Zanis Professor 2 Reply to Reviewer #1 We would like to thank Reviewer #1 for the constructive and helpful comments. Reviewer’s contribution is recognized in the acknowledgments of the revised manuscript. It follows our response point by point. 1) The Reviewer notes: “Section 1: Fast response vs. slow response discussion. I understand the use of these concepts, especially in view of intercomparing models. Imagine you have to talk to a wider audience interested in the “effective response” of climate to aerosol forcing in a naturally coupled climate system.
    [Show full text]
  • Geography and Atmospheric Science 1
    Geography and Atmospheric Science 1 Undergraduate Research Center is another great resource. The center Geography and aids undergraduates interested in doing research, offers funding opportunities, and provides step-by-step workshops which provide Atmospheric Science students the skills necessary to explore, investigate, and excel. Atmospheric Science labs include a Meteorology and Climate Hub Geography as an academic discipline studies the spatial dimensions of, (MACH) with state-of-the-art AWIPS II software used by the National and links between, culture, society, and environmental processes. The Weather Service and computer lab and collaborative space dedicated study of Atmospheric Science involves weather and climate and how to students doing research. Students also get hands-on experience, those affect human activity and life on earth. At the University of Kansas, from forecasting and providing reports to university radio (KJHK 90.7 our department's programs work to understand human activity and the FM) and television (KUJH-TV) to research project opportunities through physical world. our department and the University of Kansas Undergraduate Research Center. Why study geography? . Because people, places, and environments interact and evolve in a changing world. From conservation to soil science to the power of Undergraduate Programs geographic information science data and more, the study of geography at the University of Kansas prepares future leaders. The study of geography Geography encompasses landscape and physical features of the planet and human activity, the environment and resources, migration, and more. Our Geography integrates information from a variety of sources to study program (http://geog.ku.edu/degrees/) has a unique cross-disciplinary the nature of culture areas, the emergence of physical and human nature with pathway options (http://geog.ku.edu/geography-pathways/) landscapes, and problems of interaction between people and the and diverse faculty (http://geog.ku.edu/faculty/) who are passionate about environment.
    [Show full text]
  • Earth System Climatology (ESS200A)
    EarthEarth SystemSystem ClimatologyClimatology (ESS200A)(ESS200A) Course Time Lectures: Tu, Th 9:00-10:20 Discussion: 3315 Croul Hall Text Book The Earth System, 2nd Edition, Kump, Kasting, and Crane, Prentice-Hall Global Physical Climatology, Hartmann; Academic Press Meteorology Today, 7th Edition, Ahrens, Brooks Cool. Grade Homework (40%), Final (60%) Homework Issued and due every Thursday ESS200A Prof. Jin-Yi Yu ESS200A Prof. Jin-Yi Yu CourseCourse DescriptionDescription A general description of the Earth climate system and its subcomponents: the atmosphere, ocean, land surface, ice, and solid earth. ESS200A Prof. Jin-Yi Yu SyllabusSyllabus Week 1 - Global Energy Balance Week 3-4: Ocean Planetary Energy Balance Basic Structure and Dynamics Greenhouse Effect Surface Ocean Circulation: Wind-Driven Atmospheric Composition and Structure Deep Ocean Circulation: Density-Driven Role of Cloud Week 4: Land Surface and Cryosphere Week 2 - Atmospheric General Circulation Land Surface Properties (Soil and Vegetation) Hydrostatic Balance Surface Energy and Water Balance General Circulation in the Troposphere Sea Ice and Land Ice General Circulation in the Stratosphere Climate Roles of Land Surface and Ice Jetstreams Regional Circulation Systems Week 5 – Climate Change and Variation Week 2-3 - Weather Past Climate Change Air Masses and Fronts Short-term Climate variation (ENSO, NAO) Mid-Latitude Cyclones Ozone Hole Tropical Hurricane *** FINAL (October 27, Thursday) *** ESS200A Prof. Jin-Yi Yu GlobalGlobal EnergyEnergy CycleCycle Planetary energy balance Energy absorbed by Earth = Energy emitted by Earth Role of the atmosphere Greenhouse effect Role of oceans Polarward energy transport Role of land surface not significant due to its low heat capacity (from Climate Change 1995) ESS200A Prof.
    [Show full text]
  • 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.
    [Show full text]
  • The Climatological Revolution of the Eighteenth Century (Until 2016) Franz Mauelshagen Over the Last Decade Or So, the History O
    The Climatological Revolution of the Eighteenth Century (until 2016) Franz Mauelshagen Over the last decade or so, the history of meteorology and climatology has developed rapidly, pushed, to some degree, by the question of anthropogenic global warming and its scientific foundations. Naturally, much of this research focuses on the nineteenth and twentieth centuries, while the early days of climatology around 1800 are still somewhat obscure. Reviewing the literature reveals that, up to this point, studies in the history of climate ideas and climate science before 1800 have focused exclusively on meteorology, turning the history of climatology into a by-product of technological progress in meteorological measurement (instruments, their standardization and homogenization) and data collection from about 1700 onwards. This approach has taken for granted that “climate” has always been a meteorological category—an assumption that does not withstand the test. In the context of Antique geography, from which the idea emerged, “climate” referred to a new method of determining the location of a certain place on the globe; the term’s invention parallels the invention of geography, in which context it continued to have little to do with meteorology or the atmosphere. Apparently, the traditional geographic definition of “climate” remained stable well into the eighteenth century. This raises the question of why “climate” finally emerged from its niche in geography to represent the abstract and complex “statistics of weather.” The answer will come from a thorough study of the early modern geographic tradition, particularly the development of physical geography from Varenius to Humboldt, which will change the narrative as well as the chronology of the emergence of climatology as a scientific discipline.
    [Show full text]
  • GEOG 321: Climatology
    Geography 321: Climatology Spring 2018, 4:00-5:20p, Monday and Wednesday, 220 Chapman (CRN 32334) Instructor: Patrick J. Bartlein, 154 Condon Hall, x6-4967, [email protected], OH: Th 2:00-3:30p. GTF: TBA Overview: The climate system is a set of environmental systems including the atmosphere, ocean, and biosphere, that are coupled to one another and vary over time and space, and climatology is the study of that system. This course covers the basics of energy and moisture in the climate system, atmospheric circulation processes and patterns, and the spatial and temporal variations of climate, including those produced by human action. The course will also trace the development of our understanding of the physical basis of climatology, the development of conceptual and numerical models of climate, and how complex systems like the Earth’s climate system are studied. Text: No textbook; .pdfs and URLs will be posted on Canvas, including links to current assessments of climate variations. We will also use entries from the Encyclopedia of Atmospheric Sciences (2nd Ed), available electronically from the UO Library [link]. Prerequisites: Geog 141 (or similar preparation, with consent of instructor) Web Pages: Course web page: http://canvas.uoregon.edu/ Weather and climate page: http://geog.uoregon.edu/weather/ Supplemental materials page, syllabus, etc.: http://geog.uoregon.edu/bartlein/courses/geog321/ Grading: 100 pts. total. Two examinations (20 pts each, weeks 5 and 10), four quizzes (5 pts each), plus completion of ten exercises that involve the analysis of information from the Internet that illustrates the day-to-day and seasonal variations of weather and climate (4 pts each, 40 pts total for the exercises).
    [Show full text]
  • Introduction to Climatology
    © Jones & Bartlett Learning, LLC. NOT FOR SALE OR DISTRIBUTION © Jones & Bartlett Learning, LLC © Jones & Bartlett Learning, LLC NOT FOR SALE Inc. © Eyewire, OR DISTRIBUTION NOT FOR SALE OR DISTRIBUTION © Jones & Bartlett Learning, LLC © Jones & Bartlett Learning, LLC NOT FOR SALE OR DISTRIBUTION NOT FOR SALE OR DISTRIBUTION CHAPTER 1Introduction to Climatology © Jones & Bartlett Learning, LLC © Jones & Bartlett Learning, LLC NOT FOR SALE OR DISTRIBUTION those specializingNOT FOR in glaciology, SALE OR as wellDISTRIBUTION as special- Chapter at a Glance ized physical geographers, geologists, and ocean- Meteorology and Climatology ographers. The biosphere, which crosscuts the Scales in Climatology lithosphere, hydrosphere, cryosphere, and atmo- Subfields of Climatology sphere, includes the zone containing all life forms © Jones & BartlettClimatic Learning, Records andLLC Statistics © Joneson the& Bartlettplanet, including Learning, humans. LLC The biosphere NOT FOR SALE SummaryOR DISTRIBUTION NOT FORis examined SALE by OR specialists DISTRIBUTION in the wide array of life Key Terms sciences, along with physical geographers, geolo- Review Questions gists, and other environmental scientists. Questions for Thought The atmosphere is the component of the system © Jones & Bartlett Learning, LLCstudied by climatologists ©and Jones meteorologists. & Bartlett Ho- Learning, LLC NOT FOR SALE OR DISTRIBUTIONlistic interactions betweenNOT the FORatmosphere SALE and OR DISTRIBUTION Climatology may be described as the scientific each combination of the “spheres” are important study of the behavior of the atmosphere—the contributors to the climate (Table 1.1), at scales thin gaseous layer surrounding Earth’s surface— from local to planetary. Thus, climatologists must integrated over time. Although this definition is draw on knowledge generated in several natural © Jones & Bartlett Learning, LLC © Jones & Bartlett Learning, LLC certainly acceptable, it fails to capture fully the and sometimes social scientific disciplines to un- NOTscope FOR of SALE climatology.
    [Show full text]
  • Geologic, Climatic, and Vegetation History of California
    GEOLOGIC, CLIMATIC, AND VEGETATION HISTORY OF CALIFORNIA Constance I. Millar I ntroduction The dawning of the “Anthropocene,” the era of human-induced climate change, exposes what paleoscientists have documented for decades: earth’s environment—land, sea, air, and the organisms that inhabit these—is in a state of continual flux. Change is part of global reality, as is the relatively new and disruptive role humans superimpose on environmental and climatic flux. Historic dynamism is central to understanding how plant lineages exist in the present—their journey through time illuminates plant ecology and diversity, niche preferences, range distributions, and life-history characteristics, and is essential grounding for successful conservation planning. The editors of the current Manual recognize that the geologic, climatic, and vegetation history of California belong together as a single story, reflecting their interweaving nature. Advances in the sci- ences of geology, climatology, and paleobotany have shaken earlier interpretations of earth’s history and promoted integrated understanding of the origins of land, climate, and biota of western North America. In unraveling mysteries about the “what, where, and when” of California history, the respec- tive sciences have also clarified the “how” of processes responsible for geologic, climatic, and vegeta- tion change. This narrative of California’s prehistory emphasizes process and scale while also portraying pic- tures of the past. The goal is to foster a deeper understanding of landscape dynamics of California that will help toward preparing for changes coming in the future. This in turn will inform meaningful and effective conservation decisions to protect the remarkable diversity of rock, sky, and life that is our California heritage.
    [Show full text]
  • Climatology and Landfall of Tropical Cyclones in the South- West Indian Ocean
    Western Indian OceanCLIMATOLOGY J. Mar. Sci. & Vol.LANDFALL 8, No. OF 1, T ROPIpp. 15–36,CAL CYC LONES2009 IN SW INDIAN OCEAN 15 © 2009 WIOMSA Climatology and Landfall of Tropical Cyclones in the South- West Indian Ocean Alberto F.Mavume1, Lars Rydberg2, Mathieu Rouault3 and Johann R.E. Lutjeharms4 1Universidade Eduardo Mondlane, Faculdade de Ciências, Departamento de Física, PO Box 257, Maputo, Mozambique; 2University of Gothenburg, Department of Earth Sciences, Oceanography, Box 460, SE-405 30 Gothenburg, Sweden; 3Department of Oceanography, University of Cape Town, 7700 Rondebosch, South Africa; 4Department of Oceanography, University of Cape Town, 7700 Rondebosch, South Africa Keywords: Tropical cyclones, Indian Ocean, Mozambique Channel, global change, sea surface temperatures, ENSO, landfall Abstract—The climatology of cyclone formation and behaviour in the South-West Indian Ocean, including landfall in Mozambique and Madagascar, has been investigated. The records used were obtained by merging track data from the Joint Typhoon Warning Centre with data from La Reunion – Regional Specialised Meteorological Centre. During the period 1980-2007, 12.5 cyclones per year were formed; 85% of which in November-April (the cyclone season). The number of intense tropical cyclones increased from 36 during 1980-1993 to 56 during 1994-2007, parallel to a simultaneous but smaller decrease in the number of tropical storms. This increase in intense tropical cyclones occurred at the same time as an increase in the mean sea surface temperature of 0.12˚C. This temperature increase seems insufficient to explain the increased activity. In addition, investigating a longer record (1952-2007) from the same sources indicates a long-term decrease in cyclone frequency as well as in landfall, although this was simultaneous with a substantial increase (about 0.3˚C) in sea surface temperature.
    [Show full text]
  • The Role of Climatic Change in Alluvial Fan Development
    Chapter 24 The Role of Climatic Change in Alluvial Fan Development Ronald I. Dorn The Persistence of Climatic Change Hence, climate is an exclusive controlling factor of the in Alluvial-Fan Studies transition from periods of geomorphodynamic activity to periods of stability (Gunster and Skowronek, 2001: 27). The field evidence indicates that the Tabernas fan/lake Alluvial fans develop at the base of drainages system responded to regional tectonics, but that the fan sediment sequences were primarily climatically driven where feeder channels release their solid load (Blair (Harvey et al., 2003: 160). and McPherson, 2009; Leeder et al., 1998; Har- It is probably no coincidence that the first major vey et al., 2005). A classic fan-shape forms where episode of fan sedimentation occurred in MIS 5, the there is a well-defined topographic apex. Multiple longest and more severe episode of cold and arid climates during the Pleistocene... (Pope and Wilkinson, 2005: feeder channels, however, often blur the fan-shape 148). resulting in a merged bajada. Alluvial fans can be found in almost all terrestrial settings. These include Even along Dead Sea, climatic changes appear to be alpine (Beaudoin and King, 1994), humid tropical more important in fan development than base level or (Iriondo, 1994; Thomas, 2003), humid mid-latitude tectonic changes (Bowman, 1988; Klinger et al., 2003). (Bettis, 2003; Mills, 2005), Mediterranean (Ro- A persistent return to the importance of variable bustelli et al., 2005; Thorndrycraft and Benito, 2006), climate may result, in some small part, to the his- periglacial (Lehmkuhl and Haselein, 2000), and tory of geomorphic thought where climatic change different paraglacial settings (Ballantyne, 2002).
    [Show full text]
  • A Theoretical Framework for Discussion of Climatological Geomorphology
    View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Illinois Digital Environment for Access to Learning and Scholarship Repository LIBRARY OF THE UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN 910.72 lUloo ^'-fs^-;^^^-^;;^- lYini nTwmmmmm The person charging this material is re- sponsible for its return to the library from which it was withdrawn on or before the Latest Date stamped below. -^^'5 --^i-^OO Theft, mutilation, and underlining of books are reasons for disciplinary action and may result in dismissal from the University. UNIVERSITY OF ILLINOIS LIBRARY AT URBANA-CHAMPAIGN " D€C -^WS 7^ 4^^£La4Jg 'S<B* AUG 2 7 |S80 StPllZ i960 NOV 8 1189 NHV R I9J9 APR 2 ym MAY 9 L161 — O-1096 Digitized by the Internet Archive in 2011 with funding from University of Illinois Urbana-Champaign http://www.archive.org/details/theoreticalframe01numnn OCCASIONAL PUBLICATIONS OF THE DEPARTMENT OF GEOGRAPHY A THEORETICAL FRAMEWORK FOR DISCUSSION OF CLIMATOLOGICAL GEOMORPHOLOGY by DAG NllMMEDAL 23.2 71 1002 87 -zr^^-a V ^^ 39.4 .29 996 9.2 •^ o <9. ^> 51.3 .31 1294 3.1 ^ • • • • • • • • 1.00 .98 .41 .89 1.00 .63.76 28.6 .66 764 2.0 1.00.64 1.00 APRIL 1972 PAPER NUMBER 1 l'\n. IKKDKKIC nnd JIDII H I' \HMIl KST. .diiois GEOGRAPHY GRADUATE STUDENT ASSOCIATION UNIVERSITY OF ILLINOIS at URBANA - CHAMPAIGN o 0-7^ 1 f], ^ vl«^ A THEORETICAL FRAMEWORK FOR DISCUSSION OF CLIMATOLOGICAL GEOMORPHOLOGY Dag Nummedal ABSTRACT The paper outlines a theoretical structure for the synthesis of experimental data on weathering processes into a predictive model for rates of denudation in nature.
    [Show full text]