Three Decades of Research on the Greater Agulhas Current
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Fronts in the World Ocean's Large Marine Ecosystems. ICES CM 2007
- 1 - This paper can be freely cited without prior reference to the authors International Council ICES CM 2007/D:21 for the Exploration Theme Session D: Comparative Marine Ecosystem of the Sea (ICES) Structure and Function: Descriptors and Characteristics Fronts in the World Ocean’s Large Marine Ecosystems Igor M. Belkin and Peter C. Cornillon Abstract. Oceanic fronts shape marine ecosystems; therefore front mapping and characterization is one of the most important aspects of physical oceanography. Here we report on the first effort to map and describe all major fronts in the World Ocean’s Large Marine Ecosystems (LMEs). Apart from a geographical review, these fronts are classified according to their origin and physical mechanisms that maintain them. This first-ever zero-order pattern of the LME fronts is based on a unique global frontal data base assembled at the University of Rhode Island. Thermal fronts were automatically derived from 12 years (1985-1996) of twice-daily satellite 9-km resolution global AVHRR SST fields with the Cayula-Cornillon front detection algorithm. These frontal maps serve as guidance in using hydrographic data to explore subsurface thermohaline fronts, whose surface thermal signatures have been mapped from space. Our most recent study of chlorophyll fronts in the Northwest Atlantic from high-resolution 1-km data (Belkin and O’Reilly, 2007) revealed a close spatial association between chlorophyll fronts and SST fronts, suggesting causative links between these two types of fronts. Keywords: Fronts; Large Marine Ecosystems; World Ocean; sea surface temperature. Igor M. Belkin: Graduate School of Oceanography, University of Rhode Island, 215 South Ferry Road, Narragansett, Rhode Island 02882, USA [tel.: +1 401 874 6533, fax: +1 874 6728, email: [email protected]]. -
Sassen-2015-Expulsion-Brutality-And
EXPULSIONS EXPULSIONS Brutality and Complexity in the Global Economy Saskia Sassen THE BELKNAP PRESS OF HARVARD UNIVERSITY PRESS Cambridge, Massachusetts London, England 2014 To Richard Copyright © 2014 by the President and Fellows of Harvard College All rights reserved Printed in the United States of America Library of Congress Cataloging- in- Publication Data Sassen, Saskia. Expulsions : brutality and complexity in the global economy / Saskia Sassen. pages cm Includes bibliographical references and index. ISBN 978- 0- 674- 59922- 2 (alk. paper) 1. Economics— Sociological aspects. 2. Economic development— Social aspects. 3. Economic development— Moral and ethical aspects. 4. Capitalism— Social aspects. 5. Equality— Economic aspects. I. Title. HM548.S275 2014 330—dc23 2013040726 Contents Introduction: The Savage Sorting 1 1. Shrinking Economies, Growing Expulsions 12 2. The New Global Market for Land 80 3. Finance and Its Capabilities: Crisis as Systemic Logic 117 4. Dead Land, Dead Water 149 Conclusion: At the Systemic Edge 211 References 225 Notes 269 Acknowledgments 283 Index 285 Introduction The Savage Sorting We are confronting a formidable problem in our global politi cal economy: the emergence of new logics of expulsion. The past two de cades have seen a sharp growth in the number of people, enter- prises, and places expelled from the core social and economic orders of our time. This tipping into radical expulsion was enabled by ele- mentary decisions in some cases, but in others by some of our most advanced economic and technical achievements. The notion of ex- pulsions takes us beyond the more familiar idea of growing in e- qual ity as a way of capturing the pathologies of today’s global capi- talism. -
Information Sheet
32nd Annual Conference of the South African Society for Atmospheric Sciences 31 October-1 November Hosts: Climate System Analysis Group (University of Cape Town) Lagoon Beach Hotel in Milnerton, Cape Town. ABSTRACT BOOK Sponsor: i PREFACE The 32nd annual conference of South African Society for Atmospheric Sciences is being hosted in Cape Town, by the Climate System Analysis Group at UCT. The theme for the conference is “Innovation for Information”. It is always a challenging task to know how to translate scientific research/data into useful information. The major aim of the conference is to question, discuss and understand how we traditionally translate research into action and how we could possibly improve on that. We look forward to some interesting and exciting presentations as well as some invigorating discussion after each session. The continuing practice of asking for extended abstracts was very successful this year with over 30 abstract submitted for review and the proceedings of the conference will be published with an ISBN number. The review process was ably led by Prof Willem Landman and our thanks to him and his hard-working reviewers. The conference proceedings will be available for download from the SASAS and SASAS 2016 web-pages. There are also over 30 posters on display and we ask that you engage with them and their authors. Rather spend your tea times there, and catch up with friends and colleagues over meals! On behalf of the SASAS 2016 organising committee, we would like to thank everyone who enthusiastically contributed to the preparation and success of the 32nd Annual SASAS conference. -
Reconstruction of Total Marine Fisheries Catches for Madagascar (1950-2008)1
Fisheries catch reconstructions: Islands, Part II. Harper and Zeller 21 RECONSTRUCTION OF TOTAL MARINE FISHERIES CATCHES FOR MADAGASCAR (1950-2008)1 Frédéric Le Manacha, Charlotte Goughb, Frances Humberb, Sarah Harperc, and Dirk Zellerc aFaculty of Science and Technology, University of Plymouth, Drake Circus, Plymouth PL4 8AA, United Kingdom; [email protected] bBlue Ventures Conservation, Aberdeen Centre, London, N5 2EA, UK; [email protected]; [email protected] cSea Around Us Project, Fisheries Centre, University of British Columbia 2202 Main Mall, Vancouver, V6T 1Z4, Canada ; [email protected]; [email protected] ABSTRACT Fisheries statistics supplied by countries to the Food and Agriculture Organization (FAO) of the United Nations have been shown in almost all cases to under-report actual fisheries catches. This is due to national reporting systems failing to account for Illegal, Unreported and Unregulated (IUU) catches, including the non-commercial component of small-scale fisheries, which are often substantial in developing countries. Fisheries legislation, management plans and foreign fishing access agreements are often influenced by these incomplete data, resulting in poorly assessed catches and leading to serious over-estimations of resource availability. In this study, Madagascar’s total catches by all fisheries sectors were estimated back to 1950 using a catch reconstruction approach. Our results show that while the Malagasy rely heavily on the ocean for their protein needs, much of this extraction of animal protein is missing in the official statistics. Over the 1950-2008 period, the reconstruction adds more than 200% to reported data, dropping from 590% in the 1950s to 40% in the 2000s. -
Storm Waves Focusing and Steepening in the Agulhas Current: Satellite Observations and Modeling T ⁎ Y
Remote Sensing of Environment 216 (2018) 561–571 Contents lists available at ScienceDirect Remote Sensing of Environment journal homepage: www.elsevier.com/locate/rse Storm waves focusing and steepening in the Agulhas current: Satellite observations and modeling T ⁎ Y. Quilfena, , M. Yurovskayab,c, B. Chaprona,c, F. Ardhuina a IFREMER, Univ. Brest, CNRS, IRD, Laboratoire d'Océanographie Physique et Spatiale (LOPS), Brest, France b Marine Hydrophysical Institute RAS, Sebastopol, Russia c Russian State Hydrometeorological University, Saint Petersburg, Russia ARTICLE INFO ABSTRACT Keywords: Strong ocean currents can modify the height and shape of ocean waves, possibly causing extreme sea states in Extreme waves particular conditions. The risk of extreme waves is a known hazard in the shipping routes crossing some of the Wave-current interactions main current systems. Modeling surface current interactions in standard wave numerical models is an active area Satellite altimeter of research that benefits from the increased availability and accuracy of satellite observations. We report a SAR typical case of a swell system propagating in the Agulhas current, using wind and sea state measurements from several satellites, jointly with state of the art analytical and numerical modeling of wave-current interactions. In particular, Synthetic Aperture Radar and altimeter measurements are used to show the evolution of the swell train and resulting local extreme waves. A ray tracing analysis shows that the significant wave height variability at scales < ~100 km is well associated with the current vorticity patterns. Predictions of the WAVEWATCH III numerical model in a version that accounts for wave-current interactions are consistent with observations, al- though their effects are still under-predicted in the present configuration. -
Deep‐Water Dunes on Drowned Isolated Carbonate Terraces
1 Sedimentology Article In Press Archimer https://archimer.ifremer.fr Acceptation date : 2018 https://doi.org/10.1111/sed.12572 https://archimer.ifremer.fr/doc/00472/58418/ Deep-water dunes on drowned isolated carbonate terraces (Mozambique Channel, south-west Indian Ocean) Miramontes Elda 1, *, Jorry Stephan 2, Jouet Gwenael 2, Counts John 3, Courgeon Simon 4, Roy Philippe 1, Guerin Charline 2, Hernández-Molina F. Javier 5 1 UMR6538; CNRS-UBO; IUEM; Laboratoire Géosciences Océan; 29280 Plouzané, France 2 IFREMER; Géosciences Marines; 29280 Plouzané ,France 3 School of Earth Sciences; University College Dublin; Belfield, Dublin 4 ,Ireland 4 University of Geneva; Department of Earth Sciences; 1205 Geneva, Switzerland 5 Department of Earth Sciences; Royal Holloway; University of London; Egham Surrey TW20 0EX, United Kingdom * Corresponding author : Elda Miramontes, email address : [email protected] Abstract : Subaqueous sand dunes are common bedforms on continental shelves dominated by tidal and geostrophic currents. However, much less is known about sand dunes in deep‐marine settings that are affected by strong bottom currents. In this study, dune fields were identified on drowned isolated carbonate platforms in the Mozambique Channel (south‐west Indian Ocean). The acquired data include multibeam bathymetry, multi‐channel high‐resolution seismic reflection data, sea floor imagery, a sediment sample and current measurements from a moored current meter and hull‐mounted acoustic Doppler current profiler. The dunes are located at water depths ranging from 200 to 600 m on the slope terraces of a modern atoll (Bassas da India Atoll) and within small depressions formed during tectonic deformation of drowned carbonate platforms (Sakalaves Seamount and Jaguar Bank). -
THE Environment Management पर्यावरणो रक्षति रतक्षिय賈 a Quarterly E- Magazine on Environment and Sustainabledevelopment (For Private Circulation Only)
THE Environment Management पर्यावरणो रक्षति रतक्षिय賈 A Quarterly E- Magazine on Environment and SustainableDevelopment (for private circulation only) Vol.: IV April - June 2018 Issue: 2 Current Issue: Beat Plastic Pollution Beat Plastic Pollution If you can’t reuse it, refuse it CONTENTS From Director’s Desk Beat the plastic pollution…………2 T. K. Bandopadhyay Cement kiln co-processing facilitates sustainable management We are happy to release current issue of our institute’s newsletter on the theme, ‘Beat of MSW………………………….5 Plastic Pollution’ on World Environment Day. In last five decades plastic has made in Ulhas Parlikar road in our day to day life. From medical devices, electronic gadgets to a bag, its application is everywhere because it is cheap, light weight and can be molded in any Plastics- the modern menace to form. Since 1957, India’s plastic production capacity has increased manifold with over oceans……………………………8 30,000 plastic processing industries that contribute to 0.5% of the GDP and provide C. Maheshwar employment to about 0.4 million people. Despite of its importance, the degradation of plastic is a challenge and its careless disposal is leading to pollution in water bodies, The health risks of plastic and Safe land as well as causing deadly diseases viz. cancer due leaching of chemicals in food Plastic use practices…………… 13 products from plastic containers or allergies due to inhalation of fumes coming out Hari Prakash Srivastava from the open burning of plastic material. At this juncture it is imperative to identify sustainable practices for the management of Biodegradation of plastic……….15 plastic waste. -
Large Igneous Provinces: a Driver of Global Environmental and Biotic Changes, Geophysical Monograph 255, First Edition
2 Radiometric Constraints on the Timing, Tempo, and Effects of Large Igneous Province Emplacement Jennifer Kasbohm1, Blair Schoene1, and Seth Burgess2 ABSTRACT There is an apparent temporal correlation between large igneous province (LIP) emplacement and global envi- ronmental crises, including mass extinctions. Advances in the precision and accuracy of geochronology in the past decade have significantly improved estimates of the timing and duration of LIP emplacement, mass extinc- tion events, and global climate perturbations, and in general have supported a temporal link between them. In this chapter, we review available geochronology of LIPs and of global extinction or climate events. We begin with an overview of the methodological advances permitting improved precision and accuracy in LIP geochro- nology. We then review the characteristics and geochronology of 12 LIP/event couplets from the past 700 Ma of Earth history, comparing the relative timing of magmatism and global change, and assessing the chronologic support for LIPs playing a causal role in Earth’s climatic and biotic crises. We find that (1) improved geochronol- ogy in the last decade has shown that nearly all well-dated LIPs erupted in < 1 Ma, irrespective of tectonic set- ting; (2) for well-dated LIPs with correspondingly well-dated mass extinctions, the LIPs began several hundred ka prior to a relatively short duration extinction event; and (3) for LIPs with a convincing temporal connection to mass extinctions, there seems to be no single characteristic that makes a LIP deadly. Despite much progress, higher precision geochronology of both eruptive and intrusive LIP events and better chronologies from extinc- tion and climate proxy records will be required to further understand how these catastrophic volcanic events have changed the course of our planet’s surface evolution. -
Johann R.E. Lutjeharms the Agulhas Current
330 Subject index Johann R.E. Lutjeharms The Agulhas Current 330 SubjectJ.R.E. index Lutjeharms The Agulhas Current with 187 figures, 8 in colour 123 330 Subject index Professor Johann R.E. Lutjeharms Department of Oceanography University of Cape Town Rondebosch 7700 South Africa ISBN-10 3-540-42392-3 Springer Berlin Heidelberg New York ISBN-13 978-3-540-42392-8 Springer Berlin Heidelberg New York Library of Congress Control Number: 2006926927 This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilm or in any other way, and storage in data banks. Duplication of this publication or parts thereof is permitted only under the provisions of the German Copyright Law of September 9, 1965, in its current version, and permission for use must always be obtained from Springer-Verlag. Violations are liable to prosecution under the German Copyright Law. Springer is a part of Springer Science+Business Media springer.com © Springer-Verlag Berlin Heidelberg 2006 Printed in Germany The use of general descriptive names, registered names, trademarks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. Typesetting: Camera-ready by Marja Wren-Sargent, ADU, University of Cape Town Figures: Anne Westoby, Cape Town Satellite images: Tarron Lamont and Christo Whittle, MRSU, University of Cape Town Technical support: Rene Navarro, ADU, University of Cape Town Cover design: E. -
Ocean Circulation and Climate: a 21St Century Perspective
Chapter 13 Western Boundary Currents Shiro Imawaki*, Amy S. Bower{, Lisa Beal{ and Bo Qiu} *Japan Agency for Marine–Earth Science and Technology, Yokohama, Japan {Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA {Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, Florida, USA }School of Ocean and Earth Science and Technology, University of Hawaii, Honolulu, Hawaii, USA Chapter Outline 1. General Features 305 4.1.3. Velocity and Transport 317 1.1. Introduction 305 4.1.4. Separation from the Western Boundary 317 1.2. Wind-Driven and Thermohaline Circulations 306 4.1.5. WBC Extension 319 1.3. Transport 306 4.1.6. Air–Sea Interaction and Implications 1.4. Variability 306 for Climate 319 1.5. Structure of WBCs 306 4.2. Agulhas Current 320 1.6. Air–Sea Fluxes 308 4.2.1. Introduction 320 1.7. Observations 309 4.2.2. Origins and Source Waters 320 1.8. WBCs of Individual Ocean Basins 309 4.2.3. Velocity and Vorticity Structure 320 2. North Atlantic 309 4.2.4. Separation, Retroflection, and Leakage 322 2.1. Introduction 309 4.2.5. WBC Extension 322 2.2. Florida Current 310 4.2.6. Air–Sea Interaction 323 2.3. Gulf Stream Separation 311 4.2.7. Implications for Climate 323 2.4. Gulf Stream Extension 311 5. North Pacific 323 2.5. Air–Sea Interaction 313 5.1. Upstream Kuroshio 323 2.6. North Atlantic Current 314 5.2. Kuroshio South of Japan 325 3. South Atlantic 315 5.3. Kuroshio Extension 325 3.1. -
Mozambique Weekly Report Is Currently Being Distributed to Over 30 Embassies, 45 Non-Governmental Organisations and 677 Businesses and Individuals in Mozambique
WEEKLY MEDIA REVIEW: 22 JANUARY TO 29 JANUARY 2016 www.rhula.net Managing Editor: Nigel Morgan Mozambique’s LNG projects are located in a remote area and could be a target for attackers (see page 45 for more). Rhula Intelligent Solutions is a Private Risk Management Company servicing multinational companies, non-governmental organisations and private clients operating in Mozambique. The Rhula Mozambique Weekly Report is currently being distributed to over 30 embassies, 45 non-governmental organisations and 677 businesses and individuals in Mozambique. For additional information or services please contact: Joe van der Walt David Barske Operations Director Operational Coordinator Mobile (SA): +27 79 516 8710 Mobile (SA): +27 76 691 8934 Mobile (Moz): +258 826 780 038 Mobile (Moz): +258 84 689 5140 Email: [email protected] Email: [email protected] Disclaimer: The information contained in this report is intended to provide general information on a particular subject or subjects. While all reasonable steps are taken to ensure the accuracy and the integrity of information and date transmitted electronically and to preserve the confidentiality thereof, no liability or responsibility whatsoever is accepted by us should information or date for whatever reason or cause be corrupted or fail to reach its intended destination. It is not an exhaustive document on such subject(s), nor does it create a business or professional services relationship. The information contained herein is not intended to constitute professional advice or services. The material discussed is meant to provide general information, and should not be acted on without obtaining professional advice appropriately tailored to your individual needs. -
Mozambique Channel, South-West Indian Ocean) E
Deep-water dunes on drowned isolated carbonate terraces (Mozambique Channel, south-west Indian Ocean) E. Miramontes, S.J. Jorry, G. Jouet, J.W. Counts, S. Courgeon, P. Le Roy, C. Guerin, F.J. Hernández-Molina To cite this version: E. Miramontes, S.J. Jorry, G. Jouet, J.W. Counts, S. Courgeon, et al.. Deep-water dunes on drowned isolated carbonate terraces (Mozambique Channel, south-west Indian Ocean). Sedimentology, 2019, 66 (4), pp.1222-1242. 10.1111/sed.12572. hal-02944583 HAL Id: hal-02944583 https://hal.archives-ouvertes.fr/hal-02944583 Submitted on 12 Apr 2021 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. 1 Sedimentology Article In Press Archimer https://archimer.ifremer.fr Acceptation date : 2018 https://doi.org/10.1111/sed.12572 https://archimer.ifremer.fr/doc/00472/58418/ Deep-water dunes on drowned isolated carbonate terraces (Mozambique Channel, south-west Indian Ocean) Miramontes Elda 1, *, Jorry Stephan 2, Jouet Gwenael 2, Counts John 3, Courgeon Simon 4, Roy Philippe 1, Guerin Charline 2, Hernández-Molina F. Javier 5 1 UMR6538; CNRS-UBO;