Provenance of dust in the pacific ocean
WebbThe total amount of dust delivered to the ocean is estimated to be about 0.1 to 0.2 × 10 15 t yr − 1, which is roughly 1% of the total river load of 15 to 20 × 10 15 t yr − 1 (Rea, 1994 ). … Webbcontinental paleoclimate. In order to identify the provenance of eolian dust, Nd and Sr isotopic compositions and Rb, Sr and rare earth element (REE) concentrations have been …
Provenance of dust in the pacific ocean
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WebbAbstract Mineral dust particles from different source regions typically have distinct Pb isotope ratios. Theoretically, Pb isotopic composition of terrigenous minerals isolated from open-ocean sediments should allow for dust provenance reconstructions. However, Pb isotopes of terrigenous fractions of sediments
Webb9 sep. 2024 · Dust also delivers iron and other micronutrients to offshore regions of the ocean, where primary production is often iron-limited. 15,16 Dust and pollution aerosols both serve as cloud condensation nuclei, affecting cloud distribution and precipitation patterns. 17−19 Provenance studies provide critical constraints on the sources, … Webbrelative importance of Southern Ocean Fe fertilization on glacial‐interglacial carbon cycles, records of dust fluxes outside of the Atlantic sector of the Southern Ocean at the Last Glacial Maximum (LGM) are required. Here we use grain size and U‐series analyses to reconstruct lithogenic and CaCO 3 fluxes and Nd,
WebbArticle “Provenance of dust in the Pacific Ocean.” Detailed information of the J-GLOBAL is a service based on the concept of Linking, Expanding, and Sparking, linking science and … WebbLead from the marginal North Pacific and the sparsely sampled regions south of 5°N are less radiogenic and more variable owing to hemipelagic inputs from various volcanic arcs and older continental crust located around the Pacific Rim. 208Pb/204Pb ratios provide the most distinctive provenance information due to the relatively high ratios in Chinese loess.
WebbAtmospheric dust is a primary source of iron (Fe) to the open ocean, and its flux is particularly important in the high nutrient, low chlorophyll (HNLC) Southern Ocean where …
Webb付旭东 王岩松(河南大学环境与规划学院 河南开封 475004)世界干旱半干旱区约占地球陆地表面的1/3[1]，主要分布于副热带高压 ... low pc pricesWebbProvenance of dust in the Pacific Ocean (Q110273723) From Wikidata. Jump to navigation Jump to search. scholarly article. edit. Language Label Description Also known as; … java map with orderWebb1 apr. 2024 · In dust provenance studies, contributions from different source regions may be highly variable, and the isotopic compositions of individual source regions may also … java matcher find vs matchesWebbGiven this increase in lithogenic flux to the HNLC subantarctic Pacific Southern Ocean during the LGM, factors besides Fe-supply must have regulated the biological productivity here.", keywords = "Dust provenance, Nd, Sr, Pb isotopes, SW Pacific, 232Th-fluxes, Subantarctic Zone, Last Glacial Maximum", author = "Trudgill, {M. D.} and R. Shuttleworth … java map with initial valuesWebb9 dec. 2024 · In high concentrations, they can make the water “cloudy”. Each year, up to 15 million tonnes of plastic waste are estimated to make their way into the ocean from … java map two objects with same fieldsWebbThe funding for the TAN1106 voyage was from the Coasts and Oceans Physical Resources program awarded to the National Institute of Water and Atmospheric Research, New … javamaster coffee roaster revitWebbInternational Ocean Discovery Program (IODP) Expedition 356 Site U1461 represents one of the few records from the North West Australian shelf that provides information about aridity fluctuations in Australia during the Quaternary. A combination of low pdf compressor