We determined the extent that a riparian buffer reduces stream suspended sediment concentrations by filtering road runoff during 18 rain events in a 2.5-ha, multi-use watershed in northern Thailand. The dominant buffer species was the perennial sedge Fimbristylis aphylla Zoll. ex Steud. (Cyperaceae). We monitored stream sediment concentration for situations where road runoff either flowed into ...

Worldwide, increasing coastal development has played a major role in shaping coral reef species assemblages, but the mechanisms underpinning distribution patterns remain poorly understood. Recent research demonstrated delayed development in larval fishes exposed to suspended sediment, highlighting the need to further understand the interaction between suspended sediment as a stressor and energe...

SALT (Selection At List Time) is a variable probability sampling scheme that provides unbiased estimates of suspended sediment yield and its variance. SALT performs better than standard schemes which are estimate variance. Sampling probabilities are based on a sediment rating function which promotes greater sampling intensity during periods of high sediment yield. When preparing to monitor usin...

[1] During a major flood event, the inundation of urban environments leads to some complicated flow motion most often associated with significant sediment fluxes. In the present study, a series of field measurements were conducted in an inundated section of the City of Brisbane (Australia) about the peak of a major flood in January 2011. Some experiments were performed to use ADV backscatter am...

Swash zone sheet flow and suspended sediment transport rates are estimated on a 14 coarse sand beach constructed in a large-scale laboratory wave flume. Three test cases under 15 monochromatic waves with wave heights of 0.74 m and wave periods of 8 and 12.2 s were 16 analyzed. Sediment flux in the sheet flow layer exceeds several hundred kg m s during both 17 uprush and backwash. Suspended sedi...

Historical flow and suspended-sediment transport data from more than 2,900 sites across the United States have been analyzed in the context of estimating flow and suspended-sediment transport conditions at the 1.5-year recurrence interval flow (Q1.5). This is particularly relevant with the renewed focus on stream restoration activities and the urgency in developing water-quality criteria for se...

This study provides an initial assessment of suspended sediment transport in three rivers on the Alaska North Slope. From 2011 to 2013, the Anaktuvuk (69◦27′51.00′ ′ N, 151◦10′07.00′ ′ W), Chandler (69◦17′0.30′ ′ N, 151◦24′16.14′ ′ W), and Itkillik (68◦51′59.46′ ′ N, 150◦2′24.00′ ′ W) Rivers were monitored for a variety of hydrologic, meteorologic, and sedimentologic characteristics. Watershed ...

Sidescan sonar detects objects buried in the seafloor through generating images of ordnance such as seamine buried in sediments. The sonar operates by illuminating a broad swath of the seabed using a line array of acoustic projectors while acoustic backscattering from the illuminated sediment volume is measured. The effect of suspended sediment on the sonar imagery depends on the volume scatter...

Our research approach combines advanced observational and modeling techniques. In the field, we will measure velocity and suspended sediment at high resolution (~ few cm) in shallow flows, tracking the evolution of the salinity front through the tidal cycle. The instrumentation will incorporate an acoustic Doppler current profiler (ADCP) to measure currents and a profiling conductivitytemperatu...

The Burdekin River catchment ( 130,400 km) is a seasonally dry tropical catchment located in north-east Queensland, Australia. It is the single largest source of suspended sediment to the Great Barrier Reef (GBR). Fine sediments are a threat to ecosystems on the GBR where they contribute to elevated turbidity (reduced light), sedimentation stress, and potential impacts from the associated nutri...