Download or read book Late Holocene Relative Sea Level Change and Climate in Southern Britain written by Robin James Edwards and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Palaeosalinity Change in the Taw Estuary South west England written by Glenn Michael Havelock and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Present models of Holocene estuary evolution are driven largely by changes in relative sea-level (RSL) with little reference to long-term changes in fluvial regime and regional climate. Recent US studies of estuarine sequences have shown that decadal-centennial scale fluctuations in river discharge and freshwater inflow can be inferred by changes in estuarine palaeosalinity and that the timing of these events reflect changes in regional precipitation. It is therefore becoming apparent that estuarine sequences may hold an archive of mid-late Holocene climate change information, as well as being recorders of RSL change. The principal aim of this study is to produce a palaeosalinity-based climate record for southern England during the late Holocene, based on changes in climate-driven freshwater influx into the estuarine environment. The late Holocene palaeosalinity record of the inner Taw Estuary will be reconstructed using diatom salinity index as a proxy for salinity. Nine periods of below-average or above-average palaeosalinity have been recognised in the Taw Estuary since 300 cal.yr. BC. Four intervals of high river discharge are identified at 520-780, 850-1030, 1215-1315, and 1420-1900 cal.yr. AD. Five intervals of low river discharge are identified at 300-520, 780-850, 1030-1215, 1315-1420, and 1900-2000 cal.yr. AD. This shows that there has been significant climatic variation in southern Britain since c.300 cal.yr. AD, with climatic shifts evident in the estuarine record. In order to validate this record, the fluvial geomorphic history of the lower Taw valley was also investigated. There is a strong correspondence between the dry and wet climatic periods identified in the estuary and the geomorphic fluvial history and flood record of the lower Taw valley. Comparisons with other proxy climate records in the UK and Europe show a high degree of correspondence with the Taw Estuary palaeosalinity-based climate record. As the inner estuary environment will also be influenced by RSL change during the late Holocene, RSL change since c.6600 cal.yr. BP was successfully reconstructed in the Taw Estuary, with eleven new validated SLIPs providing evidence of former MSL. The magnitude and rates of RSL rise in north Devon are compared with other RSL records in southern Britain, suggesting that the isostatic history is similar to other areas bordering the Bristol Channel and with the central south coast of England. Fluctuations in palaeosalinity in the late Holocene are seen to be mainly controlled by centennial-scale changes in climate-driven river discharge, rather than RSL change.

Download or read book Holocene Land ocean Interaction and Environmental Change Around the North Sea written by Geological Society of London and published by Geological Society of London. This book was released on 2000 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Ocean and Cryosphere in a Changing Climate written by Intergovernmental Panel on Climate Change (IPCC) and published by Cambridge University Press. This book was released on 2022-04-30 with total page 755 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Intergovernmental Panel on Climate Change (IPCC) is the leading international body for assessing the science related to climate change. It provides policymakers with regular assessments of the scientific basis of human-induced climate change, its impacts and future risks, and options for adaptation and mitigation. This IPCC Special Report on the Ocean and Cryosphere in a Changing Climate is the most comprehensive and up-to-date assessment of the observed and projected changes to the ocean and cryosphere and their associated impacts and risks, with a focus on resilience, risk management response options, and adaptation measures, considering both their potential and limitations. It brings together knowledge on physical and biogeochemical changes, the interplay with ecosystem changes, and the implications for human communities. It serves policymakers, decision makers, stakeholders, and all interested parties with unbiased, up-to-date, policy-relevant information. This title is also available as Open Access on Cambridge Core.

Download or read book Quaternary Sea Level Changes written by Colin V. Murray-Wallace and published by Cambridge University Press. This book was released on 2014-01-30 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: An important overview of Quaternary climates including detailed Pleistocene and Holocene sea-level changes, for researchers and graduate and advanced undergraduate students.

Download or read book Late Holocene Relative Sea level Change and the Implications for the Groundwater Resource Humber Estuary UK written by Louise Alice Best and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Quantifying Holocene Sea level Change Using Intertidal Foraminifera written by Benjamin P. Horton and published by . This book was released on 2006 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sea level research a manual for the collection and evaluation of data written by O. van de Plassche and published by Springer. This book was released on 2013-12-20 with total page 631 pages. Available in PDF, EPUB and Kindle. Book excerpt: An editorial by Wanless (1982), entitled "Sea level is rising - so what?", tells the case of an executive editor of a major city newspaper, who, when confronted with evi dence for a recent sea-level rise, replied: "That just means the ocean is six inches deeper, doesn't it?". Whether his "so what?" attitude was real or put on to dike a threat of sensation, there is at present a wide and deepening interest in ongoing and future global sea-level change. This interest has grown along with the concern over global warming due to increasing levels of C02 and trace gases. A stage has been reached where investigators of climat- sea-level relationships call for long-term measurement programmes for ice-volume changes (using satellite altimetry) and changes in temperature and salinity of the oceans (ther mal expansion). This manual, however, is primarily concerned with sea level changes in the past, mainly since the end of the last glaciation. Its major objective is to help answer the ques tion: "how?", which, of course, is little else but to assist in the gathering of fuel for the burning question: "why?" Good fuel, hopefully, for the less smoke and ashes, and the more heat and light produced by that fire, the better scientists are enabled to develop a quantitative under standing of past, and hence of future, sea-level changes on different spatial and temporal scales.

Download or read book Relative Rise in Sea level During the Late Holocene at Six Salt Marshes in the Puget Basin Washington written by Harriet Guthrie Beale and published by . This book was released on 1990 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Relative sea-level changes during the past several thousand years were determined at six marshes in three areas of the Puget Basin, Washington, to identify sites of vertical crustal movement, to provide data on regional relative sea-level history, and to collect data that may be used to monitor a proposed acceleration in the rate of eustatic sea-level rise due to global warming. Six salt marshes were cored to obtain radiocarbon ages of basal fossil peat deposits. Uncertainty in relating fossil marsh plants to elevations of former sea-levels reflects both the vertical range in which the plants occur today at the six study sites, and the responses of salt marshes to the variations in tidal range that accompany rising sea-levels. Stratigraphic analysis reveals a rise in relative sealevel at all sites. Radiocarbon ages of peat samples indicate a relative sea-level rise of approximately 2-3 ± 0.5 m between 5000 and 3000 years ago and approximately 1 _+ 0.5 m between 3000 and 1000 years ago. Relative sea-level in the Puget Basin has probably not risen more than about 1 m in the past 1000 years. These data correlate with those of previous studies from southeastern Vancouver Island and the Fraser Lowland. No conclusive evidence of either sudden crustal subsidence or differential tilting across the region was found at the six marshes examined, although slow, steady subsidence of the forearc basin of the Cascadia subduction zone may account for some of the apparent eustatic sea-level rise. Differential crustal displacements of more than 1 m have probably not occurred at Padilla Bay in the past 4500 years, at Quilcene Bay in the past 3000 years, and on San Juan Island in the past 800 years. Should an acceleration in the rate of sea-level rise from global warming be in progress, erosion observed at marshes on San Juan Island may represent an early signalj Coastal areas with the greatest vulnerability to an accelerated sea-level rise, however, are in southern and eastern Puget Sound, where larger tidal ranges would register the greatest increases in amplitude, so that the highest tides would reach even higher elevations than those otherwise expected for the predicted sea-level rise.

Download or read book The Anthropocene as a Geological Time Unit written by Jan Zalasiewicz and published by Cambridge University Press. This book was released on 2019-03-07 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reviews the evidence underpinning the Anthropocene as a geological epoch written by the Anthropocene Working Group investigating it. The book discusses ongoing changes to the Earth system within the context of deep geological time, allowing a comparison between the global transition taking place today with major transitions in Earth history.

Download or read book Handbook of Sea Level Research written by Ian Shennan and published by John Wiley & Sons. This book was released on 2015-02-19 with total page 631 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measuring sea-level change – be that rise or fall – is one of the most pressing scientific goals of our time and requires robust scientific approaches and techniques. This Handbook aims to provide a practical guide to readers interested in this challenge, from the initial design of research approaches through to the practical issues of data collection and interpretation from a diverse range of coastal environments. Building on thirty years of international research, the Handbook comprises 38 chapters that are authored by leading experts from around the world. The Handbook will be an important resource to scientists interested and involved in understanding sea-level changes across a broad range of disciplines, policy makers wanting to appreciate our current state of knowledge of sea-level change over different timescales, and many teachers at the university level, as well as advanced-level undergraduates and postgraduate research students, wanting to learn more about sea-level change. Additional resources for this book can be found at: www.wiley.com\go\shennan\sealevel

Download or read book Coastal and Estuarine Environments written by Geological Society of London and published by Geological Society of America. This book was released on 2000 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: London, Geological Society, 2000.

Download or read book Second Assessment of Climate Change for the Baltic Sea Basin written by The BACC II Author Team and published by Springer. This book was released on 2015-04-03 with total page 515 pages. Available in PDF, EPUB and Kindle. Book excerpt: ​This book is an update of the first BACC assessment, published in 2008. It offers new and updated scientific findings in regional climate research for the Baltic Sea basin. These include climate changes since the last glaciation (approx. 12,000 years ago), changes in the recent past (the last 200 years), climate projections up until 2100 using state-of-the-art regional climate models and an assessment of climate-change impacts on terrestrial, freshwater and marine ecosystems. There are dedicated new chapters on sea-level rise, coastal erosion and impacts on urban areas. A new set of chapters deals with possible causes of regional climate change along with the global effects of increased greenhouse gas concentrations, namely atmospheric aerosols and land-cover change. The evidence collected and presented in this book shows that the regional climate has already started to change and this is expected to continue. Projections of potential future climates show that the region will probably become considerably warmer and wetter in some parts, but dryer in others. Terrestrial and aquatic ecosystems have already shown adjustments to increased temperatures and are expected to undergo further changes in the near future. The BACC II Author Team consists of 141 scientists from 12 countries, covering various disciplines related to climate research and related impacts. BACC II is a project of the Baltic Earth research network and contributes to the World Climate Research Programme.

Download or read book Issues in Biological Biochemical and Evolutionary Sciences Research 2011 Edition written by and published by ScholarlyEditions. This book was released on 2012-01-09 with total page 2848 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues in Biological, Biochemical, and Evolutionary Sciences Research: 2011 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Biological, Biochemical, and Evolutionary Sciences Research. The editors have built Issues in Biological, Biochemical, and Evolutionary Sciences Research: 2011 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Biological, Biochemical, and Evolutionary Sciences Research in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Biological, Biochemical, and Evolutionary Sciences Research: 2011 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.

Download or read book World Atlas of Holocene Sea Level Changes written by J. Pluet and published by Elsevier. This book was released on 1991-11-20 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: This timely study is concerned with the current record of sea-level changes during the past 10,000 years; their rates, and our ability to estimate these changes accurately. The author begins with an extensive introduction to the subject, covering the historical background and the possible causes of sea-level changes and the main methods used to reconstruct former sea-level positions. The second and main part of the Atlas provides a worldwide review of Holocene sea level changes by assembling some 800 local relative sea-level curves, deduced from field data from all parts of the world, and comparing these with over 100 curves predicted by geophysical models. This data is compiled in 77 regional plates, each containing 4-20 relative sea-level curves drawn to the same scale. These plates enable a visual assessment of geological trends in sea-level during the Holocene to be made. Comparing this data with trends deduced from tide gauges and near-future trends predicted by climate models, should enable more accurate assessment of near future sea-level changes on a local scale. The regional plates are fully annotated with locations, authors' names, year of publication and some indicative values of the spring tidal range in the region, as well as an accompanying text of comments. Finally, the author provides a state of the art review, proposes improvements in methodology and suggests directions for further study. An extensive bibliography of over 750 references, and two indexes complete the study. This comprehensive work contains data and interpretations of value to all those with an interest in regional geography, climatology, sea-level change, and environmental science.

Download or read book Sea Level Rise for the Coasts of California Oregon and Washington written by National Research Council and published by National Academies Press. This book was released on 2012-12-06 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tide gauges show that global sea level has risen about 7 inches during the 20th century, and recent satellite data show that the rate of sea-level rise is accelerating. As Earth warms, sea levels are rising mainly because ocean water expands as it warms; and water from melting glaciers and ice sheets is flowing into the ocean. Sea-level rise poses enormous risks to the valuable infrastructure, development, and wetlands that line much of the 1,600 mile shoreline of California, Oregon, and Washington. As those states seek to incorporate projections of sea-level rise into coastal planning, they asked the National Research Council to make independent projections of sea-level rise along their coasts for the years 2030, 2050, and 2100, taking into account regional factors that affect sea level. Sea-Level Rise for the Coasts of California, Oregon, and Washington: Past, Present, and Future explains that sea level along the U.S. west coast is affected by a number of factors. These include: climate patterns such as the El Niño, effects from the melting of modern and ancient ice sheets, and geologic processes, such as plate tectonics. Regional projections for California, Oregon, and Washington show a sharp distinction at Cape Mendocino in northern California. South of that point, sea-level rise is expected to be very close to global projections. However, projections are lower north of Cape Mendocino because the land is being pushed upward as the ocean plate moves under the continental plate along the Cascadia Subduction Zone. However, an earthquake magnitude 8 or larger, which occurs in the region every few hundred to 1,000 years, would cause the land to drop and sea level to suddenly rise.

Download or read book Holocene Sea level Climate and Estuarine Stratrigraphy of Baffin Bay Texas written by Daniel North Livsey and published by . This book was released on 2015 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: Within Baffin Bay, five flooding surfaces making periods of abrupt environmental change, between 1.1--1.0 ka, 2.7--2.1 ka, 3.8--3.0 ka, 5.2--4.9 ka, and 6.5--5.7 ka occur through a time-period of ever decreasing rates of relative sea-level rise and within error of periods of drying in southern Texas at ca. 1.0 ka, 2.6 ka, 3.4 ka, 4.8 ka, and 5.5 ka (Chapter 4). I hypothesize that these flooding surfaces, occurring when sea level in the Gulf of Mexico was rising