搜索结果: 1-15 共查到“海洋科学 pore water”相关记录16条 . 查询时间(0.124 秒)
Pore-water exchange driven by tidal pumping causes alkalinity export in two intertidal inlets
intertidal inlets idal pumping
2014/10/16
Carbon (C) and alkalinity export from two adjacent intertidal inlets with different terrestrial inputs was
investigated. One inlet receives a small creek from an agriculturally dominated catchment, l...
The “salt wedge pump”: Convection-driven pore-water exchange as a source of dissolved organic and inorganic carbon and nitrogen to an estuary
salt wedge pump Convection-driven pore-water exchange source of dissolved organic inorganic carbon nitrogen to an estuary
2014/4/4
Hypoxia and anoxia in coastal waters have typically been explained by the respiration of sinking organic matter associated with nutrient over-enrichment and phytoplankton blooms. Here, we assess wheth...
The ‘‘salt wedge pump’’: Convection-driven pore-water exchange as a source of dissolved organic and inorganic carbon and nitrogen to an estuary
salt wedge pump Convection-driven pore-water exchange a source of dissolved organic inorganic carbon nitrogen to an estuary
2014/4/3
Hypoxia and anoxia in coastal waters have typically been explained by the respiration of sinking organic matter associated with nutrient over-enrichment and phytoplankton blooms. Here, we assess wheth...
Resilience of pore-water chemistry and calcification in photosyntheticzones of calcifying sediments
Resilience of pore-water chemistry calcification in photosyntheticzones calcifying sediments
2014/4/16
Photosynthetically driven calcification was investigated in diatom-dominated carbonate sediments from Bait Reef, Australia. Laboratory measurements conducted over complete diel cycles, using O2, pH, C...
Simultaneous determination of in situ vertical transitions of color, pore-water metals, and visualization of infaunal activity in marine sediments
Simultaneous situ vertical transitions of color
2014/4/17
The vertical color transition from brown to gray-green in marine sediments is linked to the Fe redox boundary
and is commonly used as a proxy for biogeochemical state. We combine time-lapse sediment ...
Rates of carbonate dissolution in permeable sediments estimated from pore-water profiles: The role of sea grasses
carbonate dissolution permeable sediments estimated pore-water profiles sea grasses
2014/4/21
In this study we estimate sediment carbonate dissolution rates for sandy sea grass sediments on the Bahamas Bank using an inverse pore-water advection/diffusion/reaction model constrained by field obs...
Tide-driven deep pore-water flow in intertidal sand flats
Tide-driven deep pore-water flow intertidal sand flats
2014/4/18
Sulfidic seeps with methane ebullition were observed at the low-water line of intertidal sand flats at a number of locations in the Wadden Sea. Bioturbating fauna was absent in the seep areas but abun...
Benthic solute exchange and carbon mineralization in two shallow subtidal sandy sediments: Effect of advective pore-water exchange
Benthic solute exchange carbon mineralization
2014/4/22
We conducted four field campaigns to evaluate benthic O2
consumption and the effect of advective pore-water
flow in nearshore permeable sediments in the North Sea and Baltic Sea. Advective pore-wate...
Bioirrigation in permeable sediments: Advective pore-water transport induced by burrow ventilation
permeable sediments Advective pore-water transport induced
2014/4/23
The physical mechanism that drives bioirrigation is strongly dependent on the permeability of the sediment. We
advance two mechanisms, each described by a corresponding microenvironment model. In mud...
Effect of macrozoobenthos on two-dimensional small-scale heterogeneity of pore water phosphorus concentrations in lake sediments: A laboratory study
Effect of macrozoobenthos two-dimensional small-scale heterogeneity pore water phosphorus concentrations lake sediments A laboratory study
2014/5/9
We used mesocosms equipped with two-dimensional (2D) pore water samplers (24 rows X 24 columns, 9-mm spatial resolution) to resolve and quantify some of the complex spatial patterns in diagenetic reac...
Pore-water advection and solute fluxes in permeable marine sediments (I): Calibration and performance of the novel benthic chamber system Sandy
Pore-water advection marine sediments Calibration and performance benthic chamber system Sandy
2014/5/9
This contribution introduces the benthic chamber system Sandy that was developed for studying in situ solute fluxes in permeable sandy sediments where advective pore-water transport can dominate solut...
Pore-water advection and solute fluxes in permeable marine sediments (II): Benthic respiration at three sandy sites with different permeabilities (German Bight, North Sea)
Pore-water advection solute fluxes permeable marine sediments Benthic respiration three sandy sites different permeabilities
2014/5/9
This contribution presents total oxygen uptake (TOU) rates and nutrient fluxes of organically poor permeable shelf sands of the German Bight. Measurements have been made in situ with the novel autonom...
Oxygen dynamics in permeable sediments with wave-driven pore water exchange
Oxygen dynamics permeable sediments wave-driven pore water exchange
2014/5/14
The effects of advective pore water exchange driven by shallow water waves on the oxygen distribution in a permeable (k = 3.3 x 10-12 to 4.9 x 10-11 m2) natural sediment were studied with a planar oxy...
Advective pore-water exchange driven by surface gravity waves and its ecological implications
Advective pore-water exchange surface gravity waves
2014/5/21
The effects of surface gravity waves on pore-water release from permeable sediment (k 5 1.3–1.8 3 10211
m2
)
in shallow water were studied in a wave tank. Our tracer experiments demonstrated that s...
Determination of pore-water dissolved organic carbon fluxes from Mexican margin sediments
pore-water dissolved organic carbon fl uxes Mexican margin sediments
2014/5/30
Sediment dissolved organic carbon (DOC) fluxes were determined in the oxygen minimum zone along the northwestern Mexican margin using five different methods: in situ benthic chambers, on-d...