نتایج جستجو برای: late Holocene

تعداد نتایج: 201114  

2007
Syee Weldeab David W. Lea Ralph R. Schneider Nils Andersen

[1] A Holocene Gulf of Guinea record of riverine runoff, based on Ba/Ca in tests of a shallow-dwelling planktic foraminifer, and sea surface temperature (SST), based on Mg/Ca, reveals centennial-scale instabilities in West African monsoon (WAM) precipitation and eastern equatorial Atlantic (EEA) thermal conditions. The long-term Holocene climate trend is characterized by a warm and wet early-mi...

2016
Jessie Hughes Brian Meyer Daniel Deocampo Katie Price Sarah Ross

A detailed record of the Late Holocene sea level rise and landscape evolution that has taken place on the Georgia coast is contained within the sedimentary stratigraphy of its salt marsh depositional basins. Global relative sea level (RSL) has risen during the Late Holocene, and the rate of rise has accelerated during the Anthropocene. Jones Narrows marsh stratigraphy and radiocarbon analysis i...

Paleo-climate reconstructions based on multi-proxy such as sedimentology is current in climatology investigation. In this way, National Institute of Oceanography and Atmospheric Science cored 960cm from Arzhan wetland SW of Iran than we have investigated of sedimentology. Primarily the core was measured on magnetic sensibility per 1cm and secondly was subsampled according to magnetic sensibilit...

2004
David A. Byers Craig S. Smith Jack M. Broughton

Regional paleoenvironmental reconstructions and data on artiodactyl response to climate change suggest that large game densities would have expanded during the late Holocene in the Wyoming Basin. Within this context, we use the prey model of foraging theory to predict a late Holocene increase in the hunting of artiodactyls, relative to lagomorphs and rodents. This prediction is then tested agai...

2017
Michelle Goman Gail M. Ashley K. Maharjan Dev K. Maharjan

Late Holocene Environmental Reconstructions from Lake Solai, Kenya Michelle Goman, Gail M. Ashley, R. Bernhart Owen, Victoria C. Hover & Dev K. Maharjan To cite this article: Michelle Goman, Gail M. Ashley, R. Bernhart Owen, Victoria C. Hover & Dev K. Maharjan (2017): Late Holocene Environmental Reconstructions from Lake Solai, Kenya, The Professional Geographer, DOI: 10.1080/00330124.2016.1266...

2012
Raymond S Bradley Nicholas L Balascio Nicholas L. Balascio Raymond S. Bradley

We analyzed Holocene sedimentary records from two lakes in the Lofoten Islands, northern Norway to evaluate environmental changes during the Holocene related to northern North Atlantic climate dynamics. The lakes are located in different geomorphological settings, and thus provide a contrast in their response to regional climate change. Environmental changes at both lakes were interpreted based...

2017
Assunta Florenzano Anna Maria Mercuri Rossella Rinaldi Eleonora Rattighieri Rita Fornaciari Rita Messora Laura Arru

Citation: Florenzano A, Mercuri AM, Rinaldi R, Rattighieri E, Fornaciari R, Messora R and Arru L (2017) The Representativeness of Olea Pollen from Olive Groves and the Late Holocene Landscape Reconstruction in Central Mediterranean. Front. Earth Sci. 5:85. doi: 10.3389/feart.2017.00085 The Representativeness of Olea Pollen from Olive Groves and the Late Holocene Landscape Reconstruction in Cent...

2007
S. G. Haberle M. P. Black S. D. Mooney

It is widely believed that Australian Aborigines utilized fire to manage many landscapes; however, to what extent this use of fire impacted on Australia’s ecosystems remains uncertain. The late Pleistocene/ Holocene fire history from three sites within the Sydney Basin (Gooches Swamp, Lake Baraba and Kings Waterhole) were compared with archaeological and palaeoclimatic data. The Gooches Swamp r...

Prehistoric archaeological sites in the center of the Iranian Plateau suddenly disappeared around the end of the 4th millennium BCE. At Tepe Sialk, near Kashan, the last cultural period, namely Sialk IV - probably established around 3400 BCE after the last settlements of Sialk III6-7b - was abandoned approximately after 500 years. The material culture of this period, known as Proto-Elamite peri...

2005
T. M. Cronin R. Thunell G. S. Dwyer C. Saenger M. E. Mann C. Vann

[1] We reconstructed paleoclimate patterns from oxygen and carbon isotope records from the fossil estuarine benthic foraminifera Elphidium and Mg/Ca ratios from the ostracode Loxoconcha from sediment cores from Chesapeake Bay to examine the Holocene evolution of North Atlantic Oscillation (NAO)-type climate variability. Precipitation-driven river discharge and regional temperature variability a...

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