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This memoir is the first to review all of Antarctica’s volcanism between 200 million years ago and the Present. The region is still volcanically active. The volume is an amalgamation of in-depth syntheses, which are presented within distinctly different tectonic settings. Each is described in terms of (1) the volcanology and eruptive palaeoenvironments; (2) petrology and origin of magma; and (3) active volcanism, including tephrochronology. Important volcanic episodes include: astonishingly voluminous mafic and felsic volcanic deposits associated with the Jurassic break-up of Gondwana; the construction and progressive demise of a major Jurassic to Present continental arc, including back-arc alkaline basalts and volcanism in a young ensialic marginal basin; Miocene to Pleistocene mafic volcanism associated with post-subduction slab-window formation; numerous Neogene alkaline volcanoes, including the massive Erebus volcano and its persistent phonolitic lava lake, that are widely distributed within and adjacent to one of the world’s major zones of lithospheric extension (the West Antarctic Rift System); and very young ultrapotassic volcanism erupted subglacially and forming a world-wide type example (Gaussberg).
Our appreciation of glaciological processes in Antarctica suffers from a lack of observations in regions where numerical models indicate the ice sheet to be susceptible to ocean and/or atmospheric warming. The solution lies in the use and development of glacier geophysics. In this volume we present a series of papers that demonstrate how geophysics can be deployed in Antarctica to comprehend: (1) boundary conditions that influence ice flow such as subglacial topography, the distribution of basal water and ice-sheet rheology; (2) phenomena that might affect ice-flow processes, such as complex internal ice-sheet structures and the proposition of large stores of hitherto unappreciated groundwater; and (3) how glacigenic sediments and formerly glaciated terrain on, and surrounding, the continent can inform us about past ice-sheet dynamics. The volume also takes a historical view on developments leading to current knowledge, examines active ice-sheet processes, and points the way forward on how geophysics can advance quantitative understanding of Antarctic ice-sheet behaviour.
Evidence-Based Climate Science: Data Opposing CO2 Emissions as the Primary Source of Global Warming, Second Edition, includes updated data related to the causes of global climate change from experts in meteorology, geology, atmospheric physics, solar physics, geophysics, climatology, and computer modeling. This book objectively gathers and analyzes scientific data concerning patterns of past climate changes, influences of changes in ocean temperatures, the effect of solar variation on global climate, and the effect of CO2 on global climate. This analysis is then presented as counter-evidence to the theory that CO2 is the primary cause behind global warming. Increasingly, scientists are pointing to data which suggests that climate changes are a result of natural cycles, which have been occurring for thousands of years. Unfortunately, global warming has moved into the political realm without enough peer-reviewed research to fully validate and exclude other, more natural, causes of climate change. For example, there is an absence of any physical evidence that CO2 causes global warming, so the only argument for CO2 as the cause of warming rests entirely in computer modeling. Thus, the question becomes, how accurate are the computer models in predicting climate? What other variables could be missing from the models? In order to understand modern climate changes, we need to look at the past history of climate changes. Vast amounts of physical evidence of climate change over the past centuries and millennia have been gathered by scientists. Significant climate changes have clearly been going on for many thousands of years, long before the recent rise in atmospheric CO2 Evidence-Based Climate Science, Data Opposing CO2 Emissions as the Primary Source of Global Warming, Second Edition, documents past climate changes and presents physical evidence for possible causes. - Provides scientific evidence for issues related to global climate change that is not readily available elsewhere - Offers detailed analysis of temperature measurements with the goal of helping readers to understand conflicting claims about global warming heard every day in the news media - Presents real-time data on polar ice - Presents the real-time effect of CO2 on global warming, rather than forecasts based on computer models
Is ?conservative environmentalism? an oxymoron? Is more environmental regulation good for business? The Greening of Conservative America contends that the adherents to any well-considered conservative political philosophy should, on first principles, support pro-conservation, pro-environment policies. Furthermore, and pragmatically, Bliese demonstrates with repeated examples how environmental protection policies actually benefit business by stimulating greater efficiency and innovation and by spurring the creation of green products and services for new markets around the globe. These ideas are applied in chapters on specific environmental issues, including pollution, global warming, biodiversity, public-land management, and sustainability. The book concludes with criticisms of ?free-market environmentalism? and calls conservatives back to their root principles on matters of the environment. Concerned citizens of any political persuasion will find much in this book to inform their views on public debates over environmental issues and policies.
New geophysical techniques (multibeam echo sounding and 3D seismics) have revolutionized high-resolution imaging of the modern seafloor and palaeo-shelf surfaces in Arctic and Antarctic waters, generating vast quantities of data and novel insights into sedimentary architecture and past environmental conditions. The Atlas of Submarine Glacial Landforms is a comprehensive and timely summary of the current state of knowledge of these high-latitude glacier-influenced systems. The Atlas presents over 180 contributions describing, illustrating and discussing the full variability of landforms found on the high-latitude glacier-influenced seafloor, from fjords and continental shelves to the continental slope, rise and deep-sea basins beyond. The distribution and geometry of these submarine landforms provide key information on past ice-sheet extent and the direction and nature of ice flow and dynamics. The papers discuss individual seafloor landforms, landform assemblages and entire landsystems from relatively mild to extreme glacimarine climatic settings and on timescales from the modern margins of tidewater glaciers, through Quaternary examples to ancient glaciations in the Late Ordovician.
The Cambridge History of the Polar Regions is a landmark collection drawing together the history of the Arctic and Antarctica from the earliest times to the present. Structured as a series of thematic chapters, an international team of scholars offer a range of perspectives from environmental history, the history of science and exploration, cultural history, and the more traditional approaches of political, social, economic, and imperial history. The volume considers the centrality of Indigenous experience and the urgent need to build action in the present on a thorough understanding of the past. Using historical research based on methods ranging from archives and print culture to archaeology and oral histories, these essays provide fresh analyses of the discovery of Antarctica, the disappearance of Sir John Franklin, the fate of the Norse colony in Greenland, the origins of the Antarctic Treaty, and much more. This is an invaluable resource for anyone interested in the history of our planet.
Between June 2001 and January 2002, planetary scientists from around the United States and other nations created 24 self-selected panels to discuss issues facing solar system exploration in 2003-2013 and how those issues should be addressed. Each panel generated a white paper, containing their conclusions and recommendations. These were forwarded to the National Research Council as community input in support of the Solar System Exploration Decadal Survey and comprise the chapters of this book.