Physical, Chemical, and Biological Observations in the Eastern Tropical Pacific Ocean SCOT Expedition, April-June 1958


Book Description

This report describes the oceanographic methods used, and lists in tabular form the results obtained, on Expedition SCOT in the eastern tropical Pacific. This expedition, conducted in April, May and June, 1958, by the Scripps Institution of Oceanography with the co-operation of the Inter-American Tropical Tuna Commission, was the first of a series of cruises devoted to the oceanography of the United States tropical tuna fishing region. These cruises are part of a program of investigations carried out by the Scripps Institution under contract to the U.S. Bureau of Commercial Fisheries. The main object of the expedition was to study the distribution of ocean properties in the region as a whole at a different season and with greater coverage than in any former expedition. The survey extended from San Diego, California, to latitude 5°N. Properties measured or computed were: weather conditions, temperature, salinity, density, thermosteric anomaly, dynamic height anomaly, dissolved oxygen concentration, inorganic phosphorus concentration, the attenuation of diffuse submarine daylight, incident solar radiation, chlorophyll a, standing crop of zooplankton, standing crop of small nekton, surface current direction and velocity (by GEK), and primary production rate. Additional information presented includes a summary listing of bathythermograph observations and of organisms captured in night-lighting operations. Some preliminary results of analysis of data, including experiments made aboard ship on the growth of ocean phytoplankton in response to various combinations of added chemicals, are given.




Ocean Biogeochemistry


Book Description

Oceans account for 50% of the anthropogenic CO2 released into the atmosphere. During the past 15 years an international programme, the Joint Global Ocean Flux Study (JGOFS), has been studying the ocean carbon cycle to quantify and model the biological and physical processes whereby CO2 is pumped from the ocean's surface to the depths of the ocean, where it can remain for hundreds of years. This project is one of the largest multi-disciplinary studies of the oceans ever carried out and this book synthesises the results. It covers all aspects of the topic ranging from air-sea exchange with CO2, the role of physical mixing, the uptake of CO2 by marine algae, the fluxes of carbon and nitrogen through the marine food chain to the subsequent export of carbon to the depths of the ocean. Special emphasis is laid on predicting future climatic change.




Earth's Climate Response to a Changing Sun


Book Description

For centuries, scientists have been fascinated by the role of the Sun in the Earth's climate system. Recent discoveries, outlined in this book, have gradually unveiled a complex picture, in which our variable Sun affects the climate variability via a number of subtle pathways, the implications of which are only now becoming clear. This handbook provides the scientifically curious, from undergraduate students to policy makers with a complete and accessible panorama of our present understanding of the Sun-climate connection. 61 experts from different communities have contributed to it, which reflects the highly multidisciplinary nature of this topic. The handbook is organised as a mosaic of short chapters, each of which addresses a specific aspect, and can be read independently. The reader will learn about the assumptions, the data, the models, and the unknowns behind each mechanism by which solar variability may impact climate variability. None of these mechanisms can adequately explain global warming observed since the 1950s. However, several of them do impact climate variability, in particular on a regional level. This handbook aims at addressing these issues in a factual way, and thereby challenge the reader to sharpen his/her critical thinking in a debate that is frequently distorted by unfounded claims.




Marine Anthropogenic Litter


Book Description

This book describes how man-made litter, primarily plastic, has spread into the remotest parts of the oceans and covers all aspects of this pollution problem from the impacts on wildlife and human health to socio-economic and political issues. Marine litter is a prime threat to marine wildlife, habitats and food webs worldwide. The book illustrates how advanced technologies from deep-sea research, microbiology and mathematic modelling as well as classic beach litter counts by volunteers contributed to the broad awareness of marine litter as a problem of global significance. The authors summarise more than five decades of marine litter research, which receives growing attention after the recent discovery of great oceanic garbage patches and the ubiquity of microscopic plastic particles in marine organisms and habitats. In 16 chapters, authors from all over the world have created a universal view on the diverse field of marine litter pollution, the biological impacts, dedicated research activities, and the various national and international legislative efforts to combat this environmental problem. They recommend future research directions necessary for a comprehensive understanding of this environmental issue and the development of efficient management strategies. This book addresses scientists, and it provides a solid knowledge base for policy makers, NGOs, and the broader public.




Responding to Oil Spills in the U.S. Arctic Marine Environment


Book Description

U.S. Arctic waters north of the Bering Strait and west of the Canadian border encompass a vast area that is usually ice covered for much of the year, but is increasingly experiencing longer periods and larger areas of open water due to climate change. Sparsely inhabited with a wide variety of ecosystems found nowhere else, this region is vulnerable to damage from human activities. As oil and gas, shipping, and tourism activities increase, the possibilities of an oil spill also increase. How can we best prepare to respond to such an event in this challenging environment? Responding to Oil Spills in the U.S. Arctic Marine Environment reviews the current state of the science regarding oil spill response and environmental assessment in the Arctic region north of the Bering Strait, with emphasis on the potential impacts in U.S. waters. This report describes the unique ecosystems and environment of the Arctic and makes recommendations to provide an effective response effort in these challenging conditions. According to Responding to Oil Spills in the U.S. Arctic Marine Environment, a full range of proven oil spill response technologies is needed in order to minimize the impacts on people and sensitive ecosystems. This report identifies key oil spill research priorities, critical data and monitoring needs, mitigation strategies, and important operational and logistical issues. The Arctic acts as an integrating, regulating, and mediating component of the physical, atmospheric and cryospheric systems that govern life on Earth. Not only does the Arctic serve as regulator of many of the Earth's large-scale systems and processes, but it is also an area where choices made have substantial impact on life and choices everywhere on planet Earth. This report's recommendations will assist environmentalists, industry, state and local policymakers, and anyone interested in the future of this special region to preserve and protect it from damaging oil spills.







Turning the Tide


Book Description

Includes papers and abstracts dealing with eradication of invasive species in Alaska, Australia, Baker Island, California, Christmas Island, Enderby and Rose Islands, Galapagos Islands, Hawaii, Howland Island, Japan, Jarvis Island, Laysan Island, Lord Howe Island, Mauritius, Mexico, Nauru, New Zealand, Northern Ireland, Northern Mariana Islands, Saint-Paul Island, Seychelles, West Indies.




50 Years of Ocean Discovery


Book Description

This book describes the development of ocean sciences over the past 50 years, highlighting the contributions of the National Science Foundation (NSF) to the field's progress. Many of the individuals who participated in the exciting discoveries in biological oceanography, chemical oceanography, physical oceanography, and marine geology and geophysics describe in the book how the discoveries were made possible by combinations of insightful individuals, new technology, and in some cases, serendipity. In addition to describing the advance of ocean science, the book examines the institutional structures and technology that made the advances possible and presents visions of the field's future. This book is the first-ever documentation of the history of NSF's Division of Ocean Sciences, how the structure of the division evolved to its present form, and the individuals who have been responsible for ocean sciences at NSF as "rotators" and career staff over the past 50 years.




Lake Pavin


Book Description

This book represents the first multidisciplinary scientific work on a deep volcanic maar lake in comparison with other similar temperate lakes. The syntheses of the main characteristics of Lake Pavin are, for the first time, set in a firmer footing comparative approach, encompassing regional, national, European and international aquatic science contexts. It is a unique lake because of its permanently anoxic monimolimnion, and furthermore, because of its small surface area, its substantially low human influence, and by the fact that it does not have a river inflow. The book reflects the scientific research done on the general limnology, history, origin, volcanology and geological environment as well as on the geochemistry and biogeochemical cycles. Other chapters focus on the biology and microbial ecology whereas the sedimentology and paleolimnology are also given attention. This volume will be of special interest to researchers and advanced students, primarily in the fields of limnology, biogeochemistry, and aquatic ecology.




Oceanography


Book Description

This outstanding overview, like its predecessors, introduces readerÕ s to the oceanÕ s complex systems and their impact on our lives and futures. As an underlying theme, the author explains science as a process of continual inquiry and open testing of ideas. The "Seventh Edition" reflects the most recent advances and developments in ocean and other earth sciences.