نتایج جستجو برای: paleoclimatology
تعداد نتایج: 147 فیلتر نتایج به سال:
A Detailed Calcareous nannofossil study conducted on the Bekhme Formation that is cropped out at Southern limb of Bekhere anticline, eastern ward Dohuk city near Bajlur village, northern Iraq. The composed marly limestone, Organic limestone and fossiliferous limestone. nannopaleontological classification these calcareous nannofossils led us to determine thirty-four genus/species belonging nine ...
Abstract Coccolithophore is a group of marine calcifying phytoplankton and its living distribution sensitive to ecological change within the photic zone. Their coccoliths contribute majorly sediments have become reliable proxy in paleoceanography paleoclimatology. The upper hydrology eastern Indonesian seas has been strongly influenced by seasonal climate change, Australian-Indonesian monsoon. ...
Global climate change is attracting widespread scientific, political, and public attention owing to the involvement of international initiatives such as Paris Agreement Intergovernmental Panel on Climate Change. We present a large-scale bibliometric analysis based approximately 120,000 publications between 2001 2018 examine how studied in scientific research. Our provides an overview knowledge,...
ABSTRACT James Croll left school at the age of 13 years, yet while a janitor in Glasgow he published landmark paper on astronomically-related climate change, claimed as ‘the most important discovery paleoclimatology’, and which brought him to attention Charles Darwin, William Thomson John Tyndall, amongst others. By 1867 was persuaded become Secretary Accountant newly established Geological Sur...
Abstract Deep Springs Valley (DSV) is a hydrologically isolated valley between the White and Inyo mountains that commonly excluded from regional paleohydrology paleoclimatology. Previous studies showed uplift of ridge (informal name) by fault defeated streams crossing DSV sometime after eruption Pleistocene Bishop Tuff (0.772 Ma). Here, we present tephrochronology clast counts reaffirms interru...
Abstract. Volcanic fallout in polar ice sheets provides important opportunities to date and correlate ice-core records as well investigate the environmental impacts of eruptions. Only geochemical characterization volcanic ash (tephra) embedded strata can confirm source eruption, however, is a requisite if historical eruption ages are be used valid chronological checks on annual layer counting. ...
Reducing uncertainty in global temperature reconstructions of the past millennium remains the key issue in applying this record to society’s pressing climate change problem. Reconstructions are collaborative, built on the research of hundreds of scientists who apply their diverse scientific expertise and field and laboratory skill to create the individual proxy reconstructions that underlie the...
Quantitative estimates of past temperature changes are a cornerstone of paleoclimatology. For a number of marine sediment-based proxies, the accuracy and precision of past temperature reconstructions depends on a spatial calibration of modern surface sediment measurements to overlying water temperatures. Here, we present a database of 1095 surface sediment measurements of TEX86, a temperature p...
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