Oceanografi (hav)

The Arab Republic of Egypt enjoys a vital strategic location. Its northern border is the Mediterranean Sea, and its eastern border is the Red Sea, which give it a special significance from the bio-diversity point of view as a coastal zone, and as a sensitively diversified ecosystem. The shoreline of the Arab Republic of Egypt is about 3,000 km long. It is about 1,150 km long on the Mediterranean and about 1,850 km long on the Red Sea, which are connected by the Suez Canal, which is about 193.30 km in length. The three water masses are different ecologically and are experiencing wide range of pressures due to, eutrophication, coastal development, aquaculture and climate change. These conditions resulted in several species of seaweeds that adapt to these pressures and expand their living boundaries while others may fade away. Accordingly, the study of seaweeds biodiversity in the Egyptian marine waters is of great concern globally and constitutes an important element of global changeresearch.The present book entitled Biodiversity of Seaweeds in the Egyptian Marine Waters summarizes our current understanding of the biodiversity of seaweeds in the Egyptian marine waters. It is a timely publication based wholly on primary data which were collected through extensive field studies conducted over the years covering the marine Egyptian waters and culminate the efforts of the Egyptian phycologists. The book contains high-quality images of some species in their existing habitats. This book gains critical importance from the fact that the Egyptian marine environment is witnessing rapid development, which will no doubt have a bearing on the coastal environment ¿ and the baseline data on seaweed biodiversity would be useful to understand changes that may arise from physical changes in the environment as also pollution load and climate change.

Ce livre est une histoire naturelle des Zoophytes Acalèphes présentée en français, qui étudie les étoiles de mer et les autres animaux marins.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

This insightful book explores the role of the Gulf Stream in regulating global climate, heat, and light. Using scientific research and historical analysis, the author contends that man can control these factors by protecting the warm, north-flowing Gulf Stream from the onslaughts of the ice-cold, south-flowing Labrador Current.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Explore the fascinating history of Alaska's fishery and fur-seal industries in this engaging book. From the Native Alaskans who first harvested the bounty of the sea to the modern commercial fisheries that drive the state's economy today, the book provides a comprehensive overview of the industry's evolution. With its stunning illustrations, important statistics, and insightful analysis, this book is a must-read for anyone interested in Alaska's rich natural resources.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

The book is conceived at two levels. An introductory one intended for undergraduate and/or environmental studies students and the other (in the appendix) for advanced students (graduate). The book is different from others on the same subject which are either too descriptive or too much specialized. Beside there are large sections on biogeochemistry not usually found in other textbooks. Whenever possible an approach based on entropy considerations is introduced. The book includes a quite classical introduction to the thermodynamics of ocean and atmosphere, then the circulation of the ocean and atmosphere, the connection climate-chemistry with main emphasis on the carbon dioxide problem. The chemistry is also considered in connection with the polluted atmosphere and ocean and particulate in the atmosphere . A chapter is dedicated to the biogeochemical cycles which are solved both with the integration of a system of equations or matrix algebra. An original chapter is dedicated to sea-atmosphere interactions which includes the monsoons meteorology, hurricanes and the ENSO phenomena. Finally a concise description of the fluid environments in the Solar System is given.

Teaching the alphabet through ocean life! Also, learning some cool facts about the animals that you might not have known.

Coral reefs, which are one of the most productive and biodiverse ecosystems on Earth, serve various important roles, such as providing shelter and spawning grounds to a wide range of marine animals. However, the global decline of hard corals in tropical and subtropical regions is a growing concern. A recent review of the Intergovernmental Panel on Climate Change (IPCC) indicated that only 10%¿30% of coral reefs would survive with an increase of 1.5 °C in global warming temperature. Of coral reefs around the world, the coral reefs in eastern Asia face one of the most industrially developed and high population areas in the world. Thus, coral reefs of eastern Asia have been affected by various anthropogenic factors, such as eutrophication, coastal development, anthropogenic pollutants, ocean acidification, disease, and overfishing. Therefore, urgent research is required to determine the levels at which different factors will affect coral health. Besides, we propose a perspective on coralreef (especially those in eastern Asia) conservation under climate change and various anthropogenic activities.

From earthquakes to the northern lights and tsunamis to glacier movement, the author explains thousands of phenomena in the world around us. All of this is done using language that is simple and understandable, and at the same time this book does not try to deceive the reader, as materials of this nature often do, but uses exact physical formulas where they are needed.This book serves as an invaluable reference for physics teachers and should inspire high school students to study physics. Many of them will very likely be able to understand that riveting events and phenomena lie behind those very same formulas that just yesterday seemed so boring.This is an excellent and unique way of easily submerging oneself into the world of science and a non-stop intellectual challenge that lures the reader in much more than any game of chess.Sir Andre Geim, 2010 Nobel Prize Laureate in PhysicsThere are plenty of high school students who continue to find science interesting today. Dmitry Livanov¿s book, which is both useful and held in high regard, is written precisely with these young people in mind.This book can be used by teachers who want to expand the narrow scope of subject material in their classes and enable students to broaden their perspective about how to apply the laws of physics in order to understand such a complex natural object as planet Earth. This book will be of interest to high school students and graduates of high schools, specialized high schools and preparatory schools who want to test their understanding of physics, astronomy and geography. This book strengthens the foundation of scientific knowledge in today¿s world, which repeatedly tests the strength of the collective body of science.Evgeniy Yamburg,Member of the Russian Academy of EducationPrincipal, School #109, Moscow Dmitry Livanov was able to write a book thatis interesting both for those who are just beginning to become familiar with physics, and for those who for various reasons have forgotten much of what they knew at one time. He succeeded in doing this because he himself knows and loves physics and because physics¿as the most important part of human culture¿is interesting to him.I hope that readers of this book will not only recognize the usefulness and importance of physics, but also appreciate its beauty and allure.Andrey Furchenko,Doctor of Physics and Mathematics,Aide to the President of the Russian Federation

"This book tells the story of how scientific ocean drilling, a crowning achievement of science and engineering in the 20th century, transformed our understanding of Earth's history"--

This highly illustrated volume is a compendium of evidence and examples of change on Heard Island, a World Heritage Site near Antarctica and one of the most remote places on earth. Drawing on records from the past two centuries, as well as his own expeditions to the island in 1997 and 2016, the author provides visual evidence for the changes wrought by climate change, erosion, and environmental policy. Various phenomena not previously observed on Heard Island are documented, such as fluid dynamic instabilities and the destruction of the seawalls of a major lagoon. Based on the past, the author makes predictions about Heard Island for specific years in the future: 2031 (decade), 2051 (tricade), 2121 (century), 3021 (millennium), and 1,002,021 (millionium). The book serves as an important link between the past and future of Heard Island.

The study of vortex and wave flows is one of the traditional problems of fluid mechanics, the practical importance of which has grown significantly in recent years. Consideration of the processes of substance transfer in such complex systems as natural water bodies is fraught with many difficulties of a methodological and fundamental nature: the extreme complexity of conducting a full-scale experiment, the complexity and variability of hydrophysical fields of the ocean and hydrometeorological conditions during research, and also, in some cases, the complexity and the variability of the properties of the transferred substance. In this connection, it is of particular interest to study the transfer of markers in stationary vortex and wave flows, which can form in laboratory facilities with constant external conditions. In this case, it is possible to avoid problems associated with the spatial and temporal variability of natural sources of vortex formations and directly trace the dependence of the characteristic flow parameters or the characteristics of the movement of solid or other objects placed during. This book presents the results of experimental and theoretical studies of the dynamics and structure of multiphase vortex flows and the nature of the transfer of three types of markers: solid-state (ice, plastic), immiscible with water (oil, oil, diesel) and soluble (aniline dyes, uranyl). The results will be important, first of all, for a better understanding of the behavior of various impurities in the circulation flows and more accurate prediction of their distribution in natural conditions (in a stratified hydrosphere and atmosphere).

Reflections on the Mediterraneans, their interconnected cultures and bodies of sweet and salty water, and the possibilities of narrating their current transformations. In 2021, Etel Adnan and Simone Fattal recorded an intimate conversation about the Mediterranean at their Parisian home: "There are many Mediterraneans: the geographical, the historical, the philosophical... the personal, the one we swim, and we have swum in. It's an experience to swim, it is something you can't explain to somebody who never swam. This feeling of being held up by this water." The third cycle of TBA21-Academy's curatorial fellowship program The Current, spanning from 2021-2023 focused on the Mediterraneans in a program entitled Thus waves come in pairs after a line from Adnan's poem "Sea and Fog." It pointed to the necessity of thinking of, and thinking with, the Mediterraneans as plural--plural as their interconnected cultures, and bodies of sweet and salty water, and possibilities of narrating their current transformations. The rapid expansion of droughts, disruption of cycles of water and heat waves (above and below the rising sea level, where temperatures are rising and biodiversity is declining) across all Mediterranean shores is a key indicator of climate change in this area, occurring at a pace 20 percent faster than anywhere else on the planet. Mediterraneanization is an expansive global phenomenon now, whose borders and inhabitants are on the move. It calls for reorienting, and registering "the limits of our own apparatuses of knowledge," as Iain Chambers and Marta Cariello write in their essay "The Mediterranean Question: Thinking with the Diver." By taking the conversation between Adnan and Fattal as a point of departure and inspiration, this publication intends to collect interdisciplinary reflections around/about the Mediterraneans through art, oceanic thinking, science, and activism, as well as to record fragments of the past two years of research, carried out through conversations, lectures, walks, trips, live performances, and podcasts. Contributors>Copublished by TBA21-Academy

This book contains an inclusive compilation of perspectives about the Arctic Ocean with contributions that extend from Indigenous residents and early career scientists to Foreign Ministers, involving perspectives across the spectrum of subnational-national-international jurisdictions.  The Arctic Ocean is being transformed with global climate warming into a seasonally ice-free sea, creating challenges as well as opportunities that operate short-to-long term, underscoring the necessity to make informed decisions across a continuum of urgencies from security to sustainability time scales.   The Arctic Ocean offers a case study with lessons that are especially profound at this moment when humankind is exposed to a pandemic, awakening a common interest in survival across our globally-interconnected civilization unlike any period since the Second World War.  This second volume in the Informed Decisionmaking for Sustainability series reveals that building global inclusion involves common interests to address changes effectively "e;for the benefit of all on Earth across generations."e;