Studies of the Coastal Morphology on Surtsey Island PDF Download
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Author: John O. Norrman
Publisher:
ISBN:
Category : Coast changes
Languages : en
Pages : 28
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Book Description
Investigations on the shore and offshore morphology of the volcanic island of Surtsey off the southeastern coast of Iceland are reported. The volcanic activity that started as a submarine explosion in November 1963 ended in June 1967. A photogrammetric map of the island is in preparation. During the winter 1967/68 there was a rapid retreat of the lava cliff on the southern coast. The cliff is 10-15 m in height. The maximum retreat was 140 m and the average retreat about 75 m. The amount of lava removed by erosion is estimated at 2 million cubic meters. The shoals of former cinder-cone islands (Surtla, Syrtlingur, and Jolnir), contemporaneously built up, were found to have been abraded during the last winter. The plateaus of Jolnir and Surtla had been lowered several meters. The submarine slopes of Surtsey were investigated by SCUBA diving down to a maximum of 40 m in depth. The sandy material of the slopes of the northern point is deposited at the frictional angle of repose. There is active avalanching on these slopes. On the slopes of the southern coast angular blocks dominate. (Author).
Author: John O. Norrman
Publisher:
ISBN:
Category : Coast changes
Languages : en
Pages : 28
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Book Description
Investigations on the shore and offshore morphology of the volcanic island of Surtsey off the southeastern coast of Iceland are reported. The volcanic activity that started as a submarine explosion in November 1963 ended in June 1967. A photogrammetric map of the island is in preparation. During the winter 1967/68 there was a rapid retreat of the lava cliff on the southern coast. The cliff is 10-15 m in height. The maximum retreat was 140 m and the average retreat about 75 m. The amount of lava removed by erosion is estimated at 2 million cubic meters. The shoals of former cinder-cone islands (Surtla, Syrtlingur, and Jolnir), contemporaneously built up, were found to have been abraded during the last winter. The plateaus of Jolnir and Surtla had been lowered several meters. The submarine slopes of Surtsey were investigated by SCUBA diving down to a maximum of 40 m in depth. The sandy material of the slopes of the northern point is deposited at the frictional angle of repose. There is active avalanching on these slopes. On the slopes of the southern coast angular blocks dominate. (Author).
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 310
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Book Description
Author: Defense Documentation Center (U.S.)
Publisher:
ISBN:
Category : Soil erosion
Languages : en
Pages : 402
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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 710
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Author: Coastal Engineering Research Center (U.S.)
Publisher:
ISBN:
Category : Coasts
Languages : en
Pages : 138
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Author: Donald B. Stafford
Publisher:
ISBN:
Category : Beach erosion
Languages : en
Pages : 138
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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1416
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Author: Vanda Claudino-Sales
Publisher: Springer
ISBN: 9402415289
Category : Science
Languages : en
Pages : 591
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Book Description
This book presents the natural, environmental and scenic richness of the world’s coastal and marine areas classified by UNESCO as “Natural World Heritage Sites”. Representing well-preserved areas of exceptional significance to the planet and to humankind, they include a total of 49 marine sites, formed by reefs, atolls and gulfs, and 35 coastal sites in all oceans and all continents with exception of Antarctica. They are being protected and preserved from most degrading uses for future generations as an important legacy from the past. Exploring their richness, this book analyzes and explains these sites in a clear, understandable, scientific way, and is of interest to all who work in or care about the geosciences, environmental sciences and biosciences.
Author: D.M. Kennedy
Publisher: Geological Society of London
ISBN: 1862396841
Category : Science
Languages : en
Pages : 291
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Book Description
Rocky landforms dominate large portions of the world’s coast. Cliffs and shore platforms form spectacular landscapes, yet when compared to other landforms they are relatively unstudied with many contemporary controversies dating back to the mid-nineteenth century. The past decade has seen a reinvigoration of research driven by advances in technology that now enable precise measurements of erosion to the micron scale and quantification of wave energy onto and through cliff edifices to be made, as well as being able to directly date rock surfaces. In order to integrate this diverse range of research this volume’s regional approach first integrates the latest data with longstanding theory and then analyses this research through the boundary conditions that exist in each area. The volume brings together the research leaders in the field; includes chapters on nearly all the major rock coasts of the world and identifies future research needs.
Author: U.S. Geological Survey Library
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 732
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