Eric L. Mills H.M.S. CHALLENGER, HALIFAX, and the REVEREND
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Chapter 7 100 Years of the Ocean General Circulation
CHAPTER 7 WUNSCH AND FERRARI 7.1 Chapter 7 100 Years of the Ocean General Circulation CARL WUNSCH Massachusetts Institute of Technology, and Harvard University, Cambridge, Massachusetts RAFFAELE FERRARI Massachusetts Institute of Technology, Cambridge, Massachusetts ABSTRACT The central change in understanding of the ocean circulation during the past 100 years has been its emergence as an intensely time-dependent, effectively turbulent and wave-dominated, flow. Early technol- ogies for making the difficult observations were adequate only to depict large-scale, quasi-steady flows. With the electronic revolution of the past 501 years, the emergence of geophysical fluid dynamics, the strongly inhomogeneous time-dependent nature of oceanic circulation physics finally emerged. Mesoscale (balanced), submesoscale oceanic eddies at 100-km horizontal scales and shorter, and internal waves are now known to be central to much of the behavior of the system. Ocean circulation is now recognized to involve both eddies and larger-scale flows with dominant elements and their interactions varying among the classical gyres, the boundary current regions, the Southern Ocean, and the tropics. 1. Introduction physical regimes, understanding of the ocean until relatively recently greatly lagged that of the atmo- In the past 100 years, understanding of the general sphere. As in almost all of fluid dynamics, progress circulation of the ocean has shifted from treating it as an in understanding has required an intimate partnership essentially laminar, steady-state, slow, almost geological, between theoretical description and observational or flow, to that of a perpetually changing fluid, best charac- laboratory tests. The basic feature of the fluid dynamics terized as intensely turbulent with kinetic energy domi- of the ocean, as opposed to that of the atmosphere, has nated by time-varying flows. -
It Has Often Been Said That Studying the Depths of the Sea Is Like Hovering In
It has often been said that studying the depths of the sea is like hovering in a balloon high above an unknown land which is hidden by clouds, for it is a peculiarity of oceanic research that direct observations of the abyss are impracticable. Instead of the complete picture which vision gives, we have to rely upon a patiently put together mosaic representation of the discoveries made from time to time by sinking instruments and appliances into the deep. (Murray & Hjort, 1912: 22) Figure 1: Portrait of the H.M.S. Challenger. Prologue: Simple Beginnings In 1872, the H.M.S Challenger began its five- year journey that would stretch across every ocean on the planet but the Arctic. Challenger was funded for a single reason; to examine the mysterious workings of the ocean below its surface, previously unexplored. Under steam power, it travelled over 100,000 km and compiled 50 volumes of data and observations on water depth, temperature and conditions, as well as collecting samples of the seafloor, water, and organisms. The devices used to collect this data, while primitive by today’s standards and somewhat imprecise, were effective at giving humanity its first in-depth look into the inner workings of the ocean. By lowering a measured rope attached to a 200 kg weight off the edge of the ship, scientists estimated the depth of the ocean. A single reading could take up to 80 minutes for the weight to reach bottom. Taking a depth measurement also necessitated that the Challenger stop moving, and accurate mapping required a precise knowledge of where the ship was in the world, using navigational tools such as sextants. -
The Voyage of the “Challenger”
The Voyage of the "Challenger" From 1872 to 1876 a doughty little ship sailed the seven seas and gathered an unprecedented amount of information about them, thereby founding the science of oceanography by Herbert S. Bailey, Jr. UST 77 years ago this month a spar since that pioneering voyage. It was the philosophy at the University of Edin decked little ship of 2,300 tons Challenger, rigged with crude but in burgh. He did some dredging in the sailed into the harbor of Spithead, genious sounding equipment, that Aegean Sea, studying the distribution JEngland. She was home from a voyage charted what is still our basic map of of flora and fauna and their relation to of three and a half years and 68,890 the world under the oceans. depths, temperatures and other factors. miles over the seven seas. Her expedition Before the Challenger, only a few iso Forbes never dredged deeper than about had been a bold attack upon the un lated soundings had been taken in the 1,200 feet, and he acquired some curious known in the tradition of the great sea deep seas. Magellan is believed to have notions, including a belief that nothing explorations of the 15th and 16th cen made the Rrst. During his voyage around lived in the sea below 1,500 feet. But turies. The unknown she had explored the globe in 1521 he lowered hand lines his pioneering work led the way for the was the sea bottom. When she had left to a depth of perhaps 200 fathoms Challenger expedition. -
Former Fellows Biographical Index Part
Former Fellows of The Royal Society of Edinburgh 1783 – 2002 Biographical Index Part Two ISBN 0 902198 84 X Published July 2006 © The Royal Society of Edinburgh 22-26 George Street, Edinburgh, EH2 2PQ BIOGRAPHICAL INDEX OF FORMER FELLOWS OF THE ROYAL SOCIETY OF EDINBURGH 1783 – 2002 PART II K-Z C D Waterston and A Macmillan Shearer This is a print-out of the biographical index of over 4000 former Fellows of the Royal Society of Edinburgh as held on the Society’s computer system in October 2005. It lists former Fellows from the foundation of the Society in 1783 to October 2002. Most are deceased Fellows up to and including the list given in the RSE Directory 2003 (Session 2002-3) but some former Fellows who left the Society by resignation or were removed from the roll are still living. HISTORY OF THE PROJECT Information on the Fellowship has been kept by the Society in many ways – unpublished sources include Council and Committee Minutes, Card Indices, and correspondence; published sources such as Transactions, Proceedings, Year Books, Billets, Candidates Lists, etc. All have been examined by the compilers, who have found the Minutes, particularly Committee Minutes, to be of variable quality, and it is to be regretted that the Society’s holdings of published billets and candidates lists are incomplete. The late Professor Neil Campbell prepared from these sources a loose-leaf list of some 1500 Ordinary Fellows elected during the Society’s first hundred years. He listed name and forenames, title where applicable and national honours, profession or discipline, position held, some information on membership of the other societies, dates of birth, election to the Society and death or resignation from the Society and reference to a printed biography. -
Miles Down! Oceanography Through History
MILES DOWN! OCEANOGRAPHY THROUGH HISTORY The history of oceanography is an international story of invention, individual adventure, and exploration that remains little-known. This exhibition presents an historical overview, using timelines, text, photographs, and profiles of oceanographic expeditions and individual scientists from around the world. Image: Colette Kerry From water’s edge, the oceans are as mysterious as the stars. In the 21st century, deep-sea exploration – like space exploration - is no longer a fantastic idea, but a fact of scientific life. How did we move below the surface to study the depths of the sea? This exhibition tells the story of curious humans posing questions about the oceans and developing the tools and technology to move miles down to explore the sea. The oceans that cover 71% of the world’s surface hide complex worlds within their depths. How ocean waters behave, what creatures inhabit the seas, what lies on the ocean floors, what makes up seawater: these are the questions that underlie the scientific study of the oceans - the science of oceanography. Oceanography is the scientific study of the oceans as complex, interrelated systems. It is a mixed science that combines many different approaches to understanding the watery portion of our planet. Physics explores the physical properties of the oceans, the currents and waves. It’s a study of matter and energy and the relation between them. Chemistry is concerned with the properties, composition, and structure of substances in the oceans and the changes they undergo when they combine or react. The geology of the seafloor explores the earth’s history, composition, structure and processes. -
A Sketch of the Life and Writings of Robert Knox, the Anatomist
This is a reproduction of a library book that was digitized by Google as part of an ongoing effort to preserve the information in books and make it universally accessible. https://books.google.com ASketchoftheLifeandWritingsRobertKnox,Anatomist HenryLonsdale V ROBERT KNOX. t Zs 2>. CS^jC<^7s><7 A SKETCH LIFE AND WRITINGS ROBERT KNOX THE ANA TOM/ST. His Pupil and Colleague, HENRY LONSDALE. ITmtfora : MACMILLAN AND CO. 1870. / *All Rights reserve'*.] LONDON : R. CLAV, SONS, AND TAYLOR, PRINTERS, BREAD STREET HILL. TO SIR WILLIAM FERGUSSON, Bart. F.R.S., SERJEANT-SURGEON TO THE QUEEN, AND PRESIDENT OF THE ROYAL COLLEGE OF SURGEONS OF ENGLAND. MY DEAR FERGUSSON, I have very sincere pleasure in dedicating this volume to you, the favoured pupil, the zealous colleague, and attached friend of Dr. Robert Knox. In associating your excellent name with this Biography, I do honour to the memory of our Anatomical Teacher. I also gladly avail myself of this opportunity of paying a grateful tribute to our long and cordial friendship. Heartily rejoicing in your well-merited position as one of the leading representatives of British Surgery, I am, Ever yours faithfully, HENRY LONSDALE. Rose Hill, Carlisle, September 15, 1870. PREFACE. Shortly after the decease of Dr. Robert Knox (Dec. 1862), several friends solicited me to write his Life, but I respectfully declined, on the grounds that I had no literary experience, and that there were other pupils and associates of the Anatomist senior to myself, and much more competent to undertake his biography : moreover, I was borne down at the time by a domestic sorrow so trying that the seven years since elapsing have not entirely effaced its influence. -
Seabed Mapping: a Brief History from Meaningful Words
geosciences Review Seabed Mapping: A Brief History from Meaningful Words Pedro Smith Menandro and Alex Cardoso Bastos * Marine Geosciences Lab (Labogeo), Departmento Oceanografia, Universidade Federal do Espírito Santo, Vitória-ES 29075-910, Brazil; [email protected] * Correspondence: [email protected] Received: 19 May 2020; Accepted: 7 July 2020; Published: 16 July 2020 Abstract: Over the last few centuries, mapping the ocean seabed has been a major challenge for marine geoscientists. Knowledge of seabed bathymetry and morphology has significantly impacted our understanding of our planet dynamics. The history and scientific trends of seabed mapping can be assessed by data mining prior studies. Here, we have mined the scientific literature using the keyword “seabed mapping” to investigate and provide the evolution of mapping methods and emphasize the main trends and challenges over the last 90 years. An increase in related scientific production was observed in the beginning of the 1970s, together with an increased interest in new mapping technologies. The last two decades have revealed major shift in ocean mapping. Besides the range of applications for seabed mapping, terms like habitat mapping and concepts of seabed classification and backscatter began to appear. This follows the trend of investments in research, science, and technology but is mainly related to national and international demands regarding defining that country’s exclusive economic zone, the interest in marine mineral and renewable energy resources, the need for spatial planning, and the scientific challenge of understanding climate variability. The future of seabed mapping brings high expectations, considering that this is one of the main research and development themes for the United Nations Decade of the Oceans. -
Chapter 7 100 Years of the Ocean General Circulation
CHAPTER 7 WUNSCH AND FERRARI 7.1 Chapter 7 100 Years of the Ocean General Circulation CARL WUNSCH Massachusetts Institute of Technology, and Harvard University, Cambridge, Massachusetts RAFFAELE FERRARI Massachusetts Institute of Technology, Cambridge, Massachusetts ABSTRACT The central change in understanding of the ocean circulation during the past 100 years has been its emergence as an intensely time-dependent, effectively turbulent and wave-dominated, flow. Early technol- ogies for making the difficult observations were adequate only to depict large-scale, quasi-steady flows. With the electronic revolution of the past 501 years, the emergence of geophysical fluid dynamics, the strongly inhomogeneous time-dependent nature of oceanic circulation physics finally emerged. Mesoscale (balanced), submesoscale oceanic eddies at 100-km horizontal scales and shorter, and internal waves are now known to be central to much of the behavior of the system. Ocean circulation is now recognized to involve both eddies and larger-scale flows with dominant elements and their interactions varying among the classical gyres, the boundary current regions, the Southern Ocean, and the tropics. 1. Introduction physical regimes, understanding of the ocean until relatively recently greatly lagged that of the atmo- In the past 100 years, understanding of the general sphere. As in almost all of fluid dynamics, progress circulation of the ocean has shifted from treating it as an in understanding has required an intimate partnership essentially laminar, steady-state, slow, almost geological, between theoretical description and observational or flow, to that of a perpetually changing fluid, best charac- laboratory tests. The basic feature of the fluid dynamics terized as intensely turbulent with kinetic energy domi- of the ocean, as opposed to that of the atmosphere, has nated by time-varying flows. -
Directory of Source Materials for the History of Oceanography; UNESCO
Unesco technical papers in marine science eo Directory of source materials for the history of oceanography Unesco !990 UNESCO TECHNICAL PAPERS IN MARINE SCIENCE Numbers 2. 3. 5, 6, 7,9, IO, II. 12, 13. 15. 16, 17. 18, 20.21.22,23. 24, 27. 28, 29, 30 and 32. arc out of stock. For full titles see inside back cover. Numbers 1, 4, 8 and 14 are incorporated in No. 27. No. Year SCOR No Year SCOR wo WG 19 Manne Science leaching at (he Univcrsit) (.evei 45 The International System of Units (SI) Kepon of lhe Unesco Workshop on Universa) in Oceanography Report of IAPSO Working Cunicula-/!iailabte in Spannh ami Arabic 1974 Group on Symbols. Units and Nomenclature in Physical Oceanography (SUN) 1985 25 Marine science programme for the Red Scj. Recommendations of the workshop held in 46 Opportunities and problems in Hremerhasen. FKG, 22*25 October 1974. satellite measurements of (he sea sponsored h) the Deutsche Forschungsgemein- Report of SCOR Working Group 70 schaft and Unesco 1976 — Available in Ar.. Ch., F.. R.. and S. 1986 WG 70 26 Marine science in the Gulf arca-Rcport of a 47 Research on coastal marine systems consullatisc meeting. Paris, IM4 November 1975 1976 — Report of the third meeting of the Uncsco/SCOR/IABO 3| Coastal bgoon survey (1976-1978) 198tï — consultative panel on coastal systems October 1984 1986 33 Coastal lagoon research, present and future Proceedings of a seminar. Duke University. 48 Coastal off-shore ecosystems relationships August 1978 (Unesco. IABO). 1981 — Final Report of SCOR/IABO/ Unesco Working Group 65 34 The carbon budget of the oceans Report of a Texel. -
Winter / Spring 2007
FOLLOWING SEASEA 2005-2006 Annual Report Issue Winter/Spring 2007 sea at thirty-five TABLETABLE OFOF CONTENTSCONTENTS Winter/Spring 2007 Cover Story SEA at Thirty-five SEA celebrates its 35th Anniversary year . .1 Features Ann Wickes Brewer A tribute to a SEA trustee emeritus . .4 Heading for a ‘roasted world’ John Bullard’s Boston Globe editorial . .9 In Every Issue Passages Events and news of general interest . .8 Scuttlebutt Alumni news from around the world . .10 Science Corner The evolution of oceanographic equipment . .26 Currents Mariah Klingsmith and Jarod Maggio (C-187) volunteer for the Peace Corps in the Philippines . .28 Special Report 2005-2006 Report to Donors From the desk of Board Chair, Linda Cox Maguire . .14 Annual Report . .15 Following SEA Winter/Spring 2007 Editor: Jan Wagner Cover Design: Lori Dolby Design: MBDesign Photography: Sandie Allen, Laurie Bullard, courtesy Colgate University, Mariah Klingsmith, Jarod Maggio, Amy Radar, courtesy Sparkman & Stephens, Jan Wagner, Become an alumni enrollment volunteer! For more information, Jim Watters, Laurie Weitzen contact Laurie Weitzen at (800) 552-3633, ext. 12 or [email protected] Following SEA is available online. If you’d like your prints, slides, or digital images considered for the next issue contact: Kerry Sullivan, ext. 20 or [email protected]. Sea Education Association, Inc., PO Box 6, Woods Hole, Massachusetts 02543 Phone 800-552-3633 Fax 508-457-4673 www.sea.edu Recycled Chlorine-Free Paper / Soy Ink captains October 1982 4 sea A lesson in determinationat thirty-five The story of SEA’s founding and the early years of struggle to gain a pathway to success is a lesson in determination on the part of Corwith Cramer, Jr. -
Chapter 2 a History of Marine Science
OIMS/9 Instructor’s Manual CHAPTER 2 A HISTORY OF MARINE SCIENCE SIX MAIN CONCEPTS The ocean did not prevent the spread of humanity. By the time European explorers set out to “discover” the world, native peoples met them at nearly every landfall. Any coastal culture skilled at raft building or small-boat navigation had economic and nutritional advantages over less skilled competitors. The first global exploratory expeditions were undertaken by Chinese admiral Zheng He beginning in 1405. The three expeditions of Captain James Cook, British Royal Navy, were perhaps the first to apply the principles of scientific investigation to the ocean. The voyage of H.M.S. Challenger (1872 – 1876) was the first extensive expedition dedicated exclusively to research. Modern oceanography is guided by consortia of institutions and governments. MAIN HEADINGS 2.1 UNDERSTANDING THE OCEAN BEGAN WITH VOYAGING FOR TRADE AND EXPLORATION Early Peoples Traveled the Ocean for Economic Reasons Systematic Study of the Ocean Began at the Library of Alexandria Eratosthenes Accurately Calculated the Size and Shape of Earth Seafaring Expanded Human Horizons Viking Raiders Discovered North America The Chinese Undertook Organized Voyages of Discovery 2.2 THE AGE OF EUROPEAN DISCOVERY Prince Henry Launched the European Age of Discovery 2.3 VOYAGING COMBINED WITH SCIENCE TO ADVANCE OCEAN STUDIES Captain James Cook: First Marine Scientist Accurate Determination of Longitude Was the Key to Oceanic Exploration and Mapping 2.4 THE FIRST Scientific Expeditions WERE UNDERTAKEN -
CW.01.08.Chemistry's Darwin.Indd
Historical profile The chemist who saved biology A long voyage led one young chemist to steer evolutionary biology onto the right course. Richard Corfield explores the life of chemistry’s Darwin In short John Young Buchanan was the sole chemist aboard HMS Challenger – a ship that spent four years studying the world’s oceans Previously seafaring scientific studies had mistakenly identified a substance on the seabed as a primitive organism that colonised the ocean floor throughout the globe Buchanan was responsible for uncovering this mistake, which could otherwise have seriously damaged the acceptance of evolutionary biology John Young Buchanan MUSEUM HISTORY NATURAL 56 | Chemistry World | February 2008 www.chemistryworld.org 135 years ago, a small steam and sail would be used to collect the samples. corvette slipped her moorings from Attached to this, at intervals, were the quayside in the bustling UK naval thermometers for measuring the city of Portsmouth and set out on thermal structure of the ocean, and one of history’s most extraordinary remote-controlled flasks for taking voyages of scientific discovery. HMS samples at different depths. At the NATURAL HISTORY MUSEUM HISTORY NATURAL Challenger had been tasked – via an end of the sounding line was a device unlikely collaboration of the British for retrieving sediment samples Navy and the Royal Society – to from the seafloor itself. perform the first detailed study of It was essential to use steam the world’s oceans. power while dredging and sounding, The voyage had four specific because only with a consistent push objectives. The first was to from the propeller could the attitude investigate the physical conditions and position of the ship be kept of the deep sea in the great ocean constant.