Results 71 to 80 of about 1,334 (206)

Soil quality degradation under seawater intrusion: chemical, spectral, and dielectric insights

Discover Soil
Soil salinization caused by seawater intrusion is a growing global concern that impacts agricultural productivity and soil sustainability. This study aimed to assess how saltwater intrusion influences the chemical, mineralogical, and electrical ...
Ajay L. Vishwakarma, Shruti O. Varma, Ajay Chaudhari, M. R. Sonawane   +3 more
doaj   +1 more source

Are extracted materials truly representative of original samples? Impact of C18 extraction on CDOM optical and chemical properties

Frontiers in Chemistry, 2016
Some properties of dissolved organic matter (DOM) and chromophoric dissolved organic matter (CDOM) can be easily measured directly on whole waters, while others require sample concentration and removal of natural salts.
Andrea A Andrew, Rossana eDel Vecchio, Yi eZhang, Ajit eSubramaniam, Neil eBlough   +4 more
doaj   +1 more source

Absorption properties of chromophoric dissolved organic matter (CDOM) in the East China Sea and the waters off eastern Taiwan [PDF]

, 2018
The absorption properties of chromophoric dissolved organic matter (CDOM) in the East China Sea (ECS) and the waters off eastern Taiwan (WET) were studied during May 2014.
Gao, Xuelu, Xuelu Gao, Huamao Yuan, Qianguo Xing, Zhou, Fengxia, Chen-Tung Arthur Chen, Song, Jinming, Yuan, Huamao, Jinming Song, Chen, Chen-Tung Arthur, Xing, Qianguo, Fengxia Zhou   +11 more
core   +1 more source

On saltwater intrusion in Pearl River estuary using reflectance spectroscopy and simulated MERIS Data

Shui kexue jinzhan, 2012
Spectra,salinity,total suspended solids and colored dissolved organic matter are sampled at 44 locations in the Pearl River estuary on December 18,19 and 21,2006.The samples are analyzed.Based on the experimental results,the relationship between the ...
FANG Li-gang, LI Hong-li, CHEN Shui-sen
doaj   +1 more source

A semi‐analytical Bayesian estimate retrieval algorithm for the inversion of remote‐sensing reflectance in optically deep and shallow waters

Limnology and Oceanography: Methods, Volume 24, Issue 1, January 2026.
Abstract The inverse problem in remote sensing of aquatic environment consists in retrieving optically significant constituents (OSCs) from a spectral measurement of the remote sensing reflectance (Rrs).Optically significant constituent includes chlorophyll a concentration (Chl a), a proxy of phytoplankton biomass, absorption of colored detrital matter
Soham Mukherjee, Raphaël Mabit, Simon Bélanger   +2 more
wiley   +1 more source

Optical Properties and Photochemical Transformation of the Dissolved Organic Matter Released by Sargassum

Frontiers in Marine Science, 2020
Chromophoric dissolved organic matter (CDOM) is the dominant absorber of ultraviolet radiation in the ocean, but its sources within the ocean, as well as its chemical composition, remain uncertain.
Leanne C. Powers, Rossana Del Vecchio, Neil V. Blough, Natasha McDonald, Natasha McDonald, Philippe Schmitt-Kopplin, Philippe Schmitt-Kopplin, Philippe Schmitt-Kopplin, Michael Gonsior   +8 more
doaj   +1 more source

Land Cover and Hydrology Regulate Riverine Carbon Emissions From Subarctic Catchments

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 1, January 2026.
Abstract Streams transport carbon (C) and nutrients across the terrestrial‐aquatic interface and are significant sources of methane (CH4) and carbon dioxide (CO2) to the atmosphere. Climate‐induced changes in vegetation and hydrology increase the export of dissolved organic carbon (DOC) from terrestrial to aquatic ecosystems, but the impact of these ...
T. Saarela, C. Palacin‐Lizarbe, W. Hashmi, L. Kohl, M. E. Marushchak, H. M. P. Siljanen, X. Zhu, F. Berninger, J. Pumpanen   +8 more
wiley   +1 more source

The Contribution of Methane Photoproduction to the Oceanic Methane Paradox

Geophysical Research Letters, 2020
Although methanogenesis is considered a strictly anaerobic process, oxygen‐replete surface open‐ocean waters are usually supersaturated with methane (CH4), a phenomenon termed the oceanic methane paradox.
Y. Li, C. G. Fichot, L. Geng, M. G. Scarratt, H. Xie   +4 more
doaj   +1 more source

Saltmarshes as a source of chromophoric dissolved organic matter (CDOM) to Southern California coastal waters

Limnology and Oceanography, 2008
To determine chromophoric dissolved organic matter (CDOM) sources in Southern California coastal waters, optical properties of a river outlet and adjacent tidally flushed salt marshes were monitored (dry season; June‐July 2001). Average absorption coefficients doubled at ebb vs. flood tides (4.8 ± 1.5 vs.
Clark, Catherine D., Litz, Liannea P., Grant, Stanley B.   +2 more
openaire   +3 more sources

Groundwater as a source of dissolved organic matter to coastal waters: Insights from radon and CDOM observations in 12 shallow coastal systems

, 2019
The influence of groundwater and pore-water exchange on dissolved organic matter (DOM) dynamics in coastal surface waters remains poorly understood. Here, we combine bottom up (i.e., groundwater-derived flux estimates) and top down (i.e., water column ...
Tait, Douglas R., Cyronak, Tyler, Maher, DT, Maher, Damien T, Macklin, Paul, Santos, IR, Sadat-Noori, Mahmood, Cyronak, T, Jeffrey, LC, Webb, Jackie R., Santos, Isaac R., Tait, DR, Webb, JR, Sadat-Noori, M ; https://orcid.org/, Macklin, P, Jeffrey, Luke C., Maher, Damien T.   +16 more
core   +1 more source