An estimate of the suspended particulate matter (SPM) transport in the southern North Sea using SeaWiFS images, in situ measurements and numerical model results

Fettweis, M.; Nechad, Bouchra; Eynde, D. Van den

doi:10.1016/j.csr.2007.01.017

Cited by 95 publications

(65 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although the model captures general horizontal SPM pattern found in MERIS data, the SPM fronts in the satellite data are weaker compared to model results. SPM concentrations derived from satellite data have a cut-off maximum value (≈ 70 mg l −1 for MERIS data), due to general constraints in the processing algorithms (Fettweis et al, 2007). Therefore satellite data may not be able to resolve larger gradients in zones with high SPM content, i.e.…”

Section: E Comparison Between Modeled and Satellite Spm Concentrationsmentioning

confidence: 99%

Effect of waves and currents on the dynamics and seasonal variations of suspended particulate matter in the North Sea

Dobrynin¹,

Gayer²,

Pleskachevsky³

et al. 2010

Journal of Marine Systems

View full text Add to dashboard Cite

Effect of waves and currents on the dynamics and seasonal variations of suspended particulate matter (SPM) in the North Sea is investigated by a three-dimensional Circulation and Transport Model for SPM (CTM-SPM) in 2002 and 2003, forced by waves and meteorological data. Calculated fine sediment exchange processes at the seawater-seabed interface are driven by the instant values of the shear stress velocity due to currents and waves. Modeled SPM concentrations are compared with in-situ measurements and satellite snap-shot images. As a result of the action of currents and waves, local bathymetry and the fine sediment content at the sea bottom, modeled time series show different short-term dynamics of SPM concentrations in various locations in the North Sea. On a longer time scale, currents and waves result in different seasonal distributions of the shear stress velocity typical for the calm (April -October) and the storm (OctoberApril) periods. Accordingly, our model calculates different seasonal distributions of SPM with the mean surface concentrations of about 2 mg l −1 in the calm and > 5 mg l −1 in the storm periods. Waves lead to a higher frequency of resuspension and erosion events and increase mixing intensity in the water column during storm periods. During calm periods, SPM distribution is mainly shaped by currents. A different pattern, characterized by high SPM concentrations in offshore areas, evolves instantly during transient storms events.

show abstract

Section: E Comparison Between Modeled and Satellite Spm Concentrationsmentioning

confidence: 99%

Effect of waves and currents on the dynamics and seasonal variations of suspended particulate matter in the North Sea

Dobrynin¹,

Gayer²,

Pleskachevsky³

et al. 2010

Journal of Marine Systems

View full text Add to dashboard Cite

show abstract

“…The strong tidal currents and the low freshwater discharge of the Schelde (yearly average of 100 m 3 s -1 ) result in a well-mixed water column. Measurements indicate variations in SPM concentration in the nearshore area of 20-70 mg l -1 and reaching 100->1,000 mg l -1 ; lower values (<10 mg l -1 ) occur in the offshore (Fettweis et al 2007a). The most important sources of SPM are the French rivers discharging into the English Channel, coastal erosion of the Cretaceous cliffs at Cap Griz-Nez and Cap BlancNez (France), and erosion of nearshore Holocene mud deposits.…”

Section: Hydrography and Suspended Sedimentsmentioning

confidence: 99%

“…The aim of the study is to determine to what extent the distribution of cohesive sediments and the transport of SPM may have changed due to increasing anthropogenic activities during the last century. The study area is crucial to the understanding of SPM transport in the southern North Sea, since SPM entering the North Sea through the Dover Strait is first concentrated in front of the Belgian-Dutch coast, before being transported further towards the northeast (Fettweis et al 2007a). In this paper, long-term human-induced effects are assessed, based on qualitative sediment descriptions of historic and recent samples, in combination with results of morphological evolution.…”

Section: Introductionmentioning

confidence: 99%

Long-term influence of maritime access works on the distribution of cohesive sediments: analysis of historical and recent data from the Belgian nearshore area (southern North Sea)

Fettweis¹,

Houziaux²,

Four

et al. 2009

Geo-Mar Lett

Self Cite

View full text Add to dashboard Cite

Long-term changes in the cohesive sediment distribution of the Belgian-Dutch nearshore zone (southern North Sea) are related to human activities (port construction, deepening of navigation channels, disposal of dredged sediments) and to natural variability, due to tides and meteorological effects. Results are based on the combined analyses of recent and historic (100 years ago) sediment sample information and bathymetric maps. Data processing was based mainly on field descriptions of the samples (consolidation, thickness) and on bathymetric maps of . Results indicate that the distribution of fresh mud and suspended sediment has changed during the last 100 years, due mainly to maritime access works. Most of the present deposition of thick layers of fresh mud (>30 cm) has anthropogenic causes. The results further indicate that erosion of older Holocene mud has increased in recent times and, as a consequence, higher amounts of fine-grained sediments are being released into the southern North Sea today.

show abstract

“…A number of satellite and airborne remote sensing instruments, such as the Landsat Thematic Mapper (TM) [10,11], the Coastal Zone Color Scanner (CZCS) [6,12], the Advanced Very High Resolution Radiometer (AVHRR) [13,14], the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) [15,16], the Moderate Resolution Imaging Spectroradiometer (MODIS) [17,18], Ocean Colour Monitor (OCM) onboard the Indian Remote Sensing Satellite (IRS-P4) [19] and the Medium-resolution imaging spectrometer (MERIS) [20,21] have been widely used to infer suspended sediment concentration in inland rivers and coastal waters. In most cases, these satellite-derived SSC fields are subsequently integrated into a numerical model for modeling the suspended sediment transport and outcomes.…”

Section: Introductionmentioning

confidence: 99%

Using GOCI Retrieval Data to Initialize and Validate a Sediment Transport Model for Monitoring Diurnal Variation of SSC in Hangzhou Bay, China

Yang

Mao

Huang

et al. 2016

Water

View full text Add to dashboard Cite

Abstract:The diurnal variation of the suspended sediment concentration (SSC) in Hangzhou Bay, China has been investigated using remotely-sensed SSC derived from the Geostationary Ocean Color Imager (GOCI) in combination with a coupled hydrodynamic-ecological model for regional and shelf seas (COHERENS). The SSC maps were inferred through a UV-AC atmospheric correction algorithm and an empirical inversion algorithm from the GOCI Level-1B data. The sediment transport model was initialized from maps of the GOCI-derived SSC and the model results were validated through a comparison with remotely-sensed data. The comparison demonstrated that the model results agreed well with the observations. The relationship between SSC distribution and hydrodynamic conditions was analyzed to investigate the sediment transport dynamics. The model's results indicate that the action of tidal currents dominate the sediment deposition and re-suspension in the coastal waters of the East China Sea. This is especially the case in Hangzhou Bay where the tidal currents are strongest. The satellite-derived sediment data product can not only dramatically improve the specification of the initial conditions for the sediment model, but can also provide valuable information for the model validation, thereby improving the model's overall performance.

show abstract

An estimate of the suspended particulate matter (SPM) transport in the southern North Sea using SeaWiFS images, in situ measurements and numerical model results

Cited by 95 publications

References 16 publications

Effect of waves and currents on the dynamics and seasonal variations of suspended particulate matter in the North Sea

Effect of waves and currents on the dynamics and seasonal variations of suspended particulate matter in the North Sea

Long-term influence of maritime access works on the distribution of cohesive sediments: analysis of historical and recent data from the Belgian nearshore area (southern North Sea)

Using GOCI Retrieval Data to Initialize and Validate a Sediment Transport Model for Monitoring Diurnal Variation of SSC in Hangzhou Bay, China

Contact Info

Product

Resources

About