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Articles 301 - 305 of 305
Full-Text Articles in Social and Behavioral Sciences
Diagenesis And Geochemistry Of Porites Corals From Papua New Guinea: Implications For Paleoclimate Reconstruction, Helen V. Mcgregor, M Gagan
Diagenesis And Geochemistry Of Porites Corals From Papua New Guinea: Implications For Paleoclimate Reconstruction, Helen V. Mcgregor, M Gagan
Faculty of Science - Papers (Archive)
No abstract provided.
Aerosol Optical Depth At Cape Grim, Tasmania 1986-1999, Stephen R. Wilson, B. W. Forgan
Aerosol Optical Depth At Cape Grim, Tasmania 1986-1999, Stephen R. Wilson, B. W. Forgan
Faculty of Science - Papers (Archive)
The aerosol optical depth at 4 wavelengths (368, 500, 778 and 868nm) has been measured automatically at Cape Grim since 1986. The site, on the northwest tip of Tasmania, Australia was chosen to be representative of much of the southern ocean. Fourteen years of measurement have been calibrated and analyzed. The data have been filtered so that only measurements made under on-shore wind conditions are considered. The major feature observed in the record is the eruption of Mt Pinatubo, which resulted in the aerosol optical depth at 500 nm rising to 0.2 – 0.3. If the period of high stratospheric …
Chronology Of Holocene Tsunamis On The Southeastern Coast Of Australia, R. W. Young, Edward A. Bryant, David M. Price, S. Y. Dilek, D. J. Wheeler
Chronology Of Holocene Tsunamis On The Southeastern Coast Of Australia, R. W. Young, Edward A. Bryant, David M. Price, S. Y. Dilek, D. J. Wheeler
Faculty of Science - Papers (Archive)
Recent research has revealed much geomorphological evidence for major tsunamis on the southeastern coast of Australia prior to British settlement in 1788. This discovery is important because this tectonically very stable coast was believed to be safe from the hazard of tsunamis because no major tsunami has occurred here in the last 200 years. But high level marine deposits of Holocene age along the coast south of Sydney show that tsunamis ran up to heights of >30 m, and at one site to heights probably >100 m. Developing a chronology for these catastrophic events is of great importance to the …
The Imprint Of Tsunami In Quaternary Coastal Sediments Of Southeastern Australia, R. W. Young, Edward A. Bryant, David M. Price, E. Spassov
The Imprint Of Tsunami In Quaternary Coastal Sediments Of Southeastern Australia, R. W. Young, Edward A. Bryant, David M. Price, E. Spassov
Faculty of Science - Papers (Archive)
TL and 14C dating has revealed anomalous chronostratigraphies at two sites on the coast of southern New South Wales, Australia, where Pleistocene sands have been driven onshore over Holocene estuarine deposits. Lack of solar bleaching of the TL component which occurs in normal swash zones, an identical TL age obtained from pumice incorporated in the Pleistocene deposit, and boulders scattered through the sand are indicative of tsunami impact. These observations prompt reassessment of the strictly uniformitarian models of barrier emplacement during the Holocene transgression both in eastern Australia and elsewhere in the world where tsunami are a possibility.
Evidence Of Tsunami Sedimentation On The Southeastern Coast Of Australia, Edward A. Bryant, R. W. Young, David M. Price
Evidence Of Tsunami Sedimentation On The Southeastern Coast Of Australia, Edward A. Bryant, R. W. Young, David M. Price
Faculty of Science - Papers (Archive)
In the coastal region, the highest magnitude storms cannot always be invoked to account for large-scale, anomalous sediment features. Any coastline in the Pacific Ocean region can be affected by tsunamis, including Australia which historically lacks evidence of such events. Geologically, tsunamis along the New South Wales coast have deposited a suite of Holocene features that consist of anomalous boulder masses, either chaotically tossed onto rock platforms and backshores or jammed into crevices; highly bimodal mixtures of sand and boulders; and dump deposits consisting of well sorted coarse debris. In addition many coastal aboriginal middens were disturbed by such events. …