Results 21 to 30 of about 107,558 (336)

Seasonal variation of secondary organic aerosol tracers in Central Tibetan Plateau [PDF]

open access: yesAtmospheric Chemistry and Physics, 2015
Secondary organic aerosol (SOA) affects the earth's radiation balance and global climate. High-elevation areas are sensitive to global climate change.
R.-Q. Shen   +5 more
doaj   +1 more source

Geochemical reactivity of subsurface sediments as potential buffer to anthropogenic inputs: a strategy for regional characterization in the Netherlands [PDF]

open access: yes, 2011
Geochemical reactivity of subsurface sediments as potential buffer to anthropogenic inputs: a strategy for regional characterization in the ...
Gaans, P.F.M., van   +3 more
core   +3 more sources

Tooth enamel nitrogen isotope composition records trophic position: a tool for reconstructing food webs

open access: yesCommunications Biology, 2023
Enamel-bound nitrogen isotopes in modern and fossil mammal teeth preserve dietary and trophic level information. This novel geochemical archive can be used to reconstruct trophic niche in ancient ecosystems.
Jennifer N. Leichliter   +10 more
doaj   +1 more source

Selective organic matter preservation in "burn-down" turbidites on the Madeira Abyssal Plain [PDF]

open access: yes, 2003
Oxidized intervals of five organic-rich Madeira Abyssal Plain (MAP) turbidites deposited during the Miocene, Pliocene, and Pleistocene all displayed comparable major loss of total organic carbon (TOC) (84 ± 3.1%) accompanied by a negative isotopic (δ13C)
Benner   +49 more
core   +2 more sources

Seasonal and Day–Night Variations in Carbonaceous Aerosols and Their Light-Absorbing Properties in Guangzhou, China

open access: yesAtmosphere, 2023
Carbonaceous aerosols (CAs), including elemental carbon (EC) and organic carbon (OC), have become the dominant component in PM2.5 in many Chinese cities, and it is imperative to address their spatiotemporal variations and sources in order to continually ...
Jiannan Su   +9 more
doaj   +1 more source

Molecular composition and photochemical evolution of water-soluble organic carbon (WSOC) extracted from field biomass burning aerosols using high-resolution mass spectrometry [PDF]

open access: yesAtmospheric Chemistry and Physics, 2020
Photochemistry plays an important role in the evolution of atmospheric water-soluble organic carbon (WSOC), which dissolves into clouds, fogs, and aerosol liquid water.
J. Cai   +8 more
doaj   +1 more source

Palaeolimnology of Lake Sapanca and identification of historic earthquake signals, Northern Anatolian Fault Zone (Turkey) [PDF]

open access: yes, 2009
Lake Sapanca is located on a strand of the Northern Anatolian Fault Zone (NAFZ, Turkey), where a series of strong earthquakes (Ms >6.0) have occurred over the past hundred years. Identifying prehistoric earthquakes in and around Lake Sapanca is key to a
Bertrand, S   +6 more
core   +1 more source

The association of cobalt with iron and manganese (oxyhydr)oxides in marine sediment. [PDF]

open access: yes, 2010
Formation and dissolution of authigenic Fe and Mn (oxyhydr)oxides influence cycling of trace metals in oxic/suboxic surface sediments.We used the diffusive gradients in thin films technique (DGT) to estimate the association of cobalt with iron and ...
Davison, William   +3 more
core   +1 more source

High-temporal resolution fluvial sediment source fingerprinting with uncertainty: a Bayesian approach [PDF]

open access: yes, 2014
This contribution addresses two developing areas of sediment fingerprinting research. Specifically, how to improve the temporal resolution of source apportionment estimates whilst minimizing analytical costs and, secondly, how to consistently quantify ...
Acornley   +71 more
core   +1 more source

The influence of soluble organic matter on shale reservoir characterization

open access: yesJournal of Natural Gas Geoscience, 2016
Shale with a maturity within the “oil window” contains a certain amount of residual soluble organic matter (SOM). This SOM have an important influence on characterization of shale reservoir.
Lei Pan, Xianming Xiao, Qin Zhou
doaj   +1 more source

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