搜索结果: 151-165 共查到“理学 Sediment”相关记录250条 . 查询时间(0.096 秒)
Younger Dryas Event and Cold Events in EarlyMid Holocene: Record from the sediment of Erhai Lake
Younger Dryas Holocene cold event Erhai Lake
font style='font-size:12px;'>
2008/7/8
Three cold events (the Younger Dryas, 9.4 ka cal BP, 5.8 ka cal BP) since the 13 ka cal BP in Erhai (EH) Lake catchment, Yunnan Province, were analyzed using the Total Organic Carbon (TOC) series of t...
Sediment-Driven Downslope Flow in Submarine Canyons and Channels: Three-Dimensional Numerical Experiments
Sediment-Driven Downslope Flow Submarine Canyons Channels Three-Dimensional Numerical Experiments
font style='font-size:12px;'>
2008/7/3
The role of submarine canyons and channels in sediment-driven downslope flow (sediment plumes) is examined, using a three-dimensional, rotational numerical model that couples the hydrodynamics and sed...
Tide-Induced Sediment Resuspension and the Bottom Boundary Layer in an Idealized Estuary with a Muddy Bed
Tide-Induced Sediment Resuspension Bottom Boundary Layer Idealized Estuary Muddy Bed
font style='font-size:12px;'>
2008/6/20
Sediment transport and bottom boundary layer (BBL) in an idealized estuary with a muddy bed were studied by numerical simulations. The focus was placed on description and prediction of the dynamics of...
Response of the methanogenic microbial community of a profundal lake sediment (Lake Kinneret, Israel) to algal deposition
methanogenic microbial community a profundal lake sediment algal deposition
font style='font-size:12px;'>
2014/4/21
An algal bloom of Peridinium gatunenese generally precedes the annual maximum of methane release from the profundal sediment of Lake Kinneret. Therefore, we investigated the response of the sediment m...
Methylmercury cycling in estuarine sediment pore waters (Penobscot River estuary, Maine, USA)
Methylmercury cycling estuarine sediment pore waters
font style='font-size:12px;'>
2014/4/21
Particulate mercury (Hg) sequestered in coastal marine sediments may be efficiently methylated to highly toxic methylmercury (MeHg), thereby placing exposed organisms at risk of MeHg bioaccumulation. ...
Glider observations of sediment resuspension in a Middle Atlantic Bight fall transition storm
sediment resuspension a Middle Atlantic Bight fall transition storm
font style='font-size:12px;'>
2014/4/18
In October of 2003 a fleet of autonomous underwater gliders began a time series of transects across the New
Jersey shelf. The gliders are equipped with a conductivity–temperature–depth sensor, and so...
Interactions between sediment resuspension and sediment quality decrease the TN : TP ratio in a shallow lake
sediment resuspension sediment quality decrease TN TP ratio a shallow lake
font style='font-size:12px;'>
2014/4/18
The relative contributions of sediment resuspension and external nutrient loading to seasonal fluctuations of the total nitrogen to total phosphorus (TN : TP) ratio in the water column ofthe shallow K...
Sediment-mediated suppression of herbivory on coral reefs: Decreasing resilience to rising sea levels and climate change?
Sediment-mediated suppression herbivory coral reefs Decreasing resilience rising sea levels climate change
font style='font-size:12px;'>
2014/4/18
We describe a mechanistic basis for maintaining an alternative degraded stable state on coral reefs: sedimentladen algal turfs. Using remote underwater video cameras we quantified rates of herbivory b...
Is the critical Shields stress for incipient sediment motion dependent on channel-bed slope?
critical Shields stress incipient sediment motion channel-bed slope
font style='font-size:12px;'>
2014/4/8
Data from laboratory flumes and natural streams show that the critical Shields stress for initial sediment motion increases with channel slope, which indicates that particles of the same size are more...
A model for fluvial bedrock incision by impacting suspended and bed load sediment
A model for fluvial bedrock incision impacting suspended bed load sediment
font style='font-size:12px;'>
2014/4/8
A mechanistic model is derived for the rate of fluvial erosion into bedrock by abrasion from uniform size particles that impact the bed during transport in both bed and suspended load. The erosion rat...
Response of the methanogenic microbial community of a profundal lake sediment (Lake Kinneret, Israel) to algal deposition
Response of the methanogenic microbial community profundal lake sediment Lake Kinneret, Israel algal deposition
font style='font-size:12px;'>
2014/4/18
An algal bloom of Peridinium gatunenese generally precedes the annual maximum of methane release from the profundal sediment of Lake Kinneret. Therefore, we investigated the response of the sediment m...
The enrichments of organic matter and total nitrogen in sediment as affected by relavant factors
font style='font-size:12px;'>
2007/8/24
Serious soil erosion has already resulted in degradation of the Loess Plateau of China. Soil erosion is commonly accompanied by extensive soil nutrient loss. Because of enrichment processe...
Applicative limitations of sediment transport on predictive modeling in geomorphology
font style='font-size:12px;'>
2007/8/24
Sources of uncertainty or error that arise in attempting to scale up the results of laboratory-scale sediment transport studies for predictive modeling of geomorphic systems include: (i) m...
Temporal and spatial changes of suspended sediment concentration and resuspension in the Yangtze River estuary
font style='font-size:12px;'>
2007/8/24
A detailed analysis of suspended sediment concentration (SSC) variations over a year period is presented using the data from 8 stations in the Yangtze River estuary and its adjacent water...
Nitrogen export by runoff and sediment under different types of land use in
West Tiaoxi catchment
font style='font-size:12px;'>
2007/8/24
Five typical land covers in West Tiaoxi catchment of China, including mulberry garden, bamboo forest, pinery, vegetable plot and paddy field, were studied on nitrogen loss in artificial ra...