The DH-48 a lightweight sampler for collection of suspended sediment samples where wading rod suspension is used.
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|401-001||DH-48 depth integrated sediment sampler||
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Will the Rickly DH-48 Integrated Sediment Sampler allow us to measure the rate at which sediment is flowing into our lake from its main tributary?
The Rickly DH-48 depth-integrated sediment sampler is designed to take continuous suspended-sediment samples. When used alone, this sampler will only measure a concentration, and not a flow rate. It is lowered from the water's surface to the bottom and raised again at a constant rate of speed to collect a depth-integrated suspended-sediment sample. The sediment-to-fluid volume can be measured to determine concentration. If it is used with a flow meter, or a velocity and depth sensor, sediment flow can be calculated.
A deep water reef off the coast of a small island in the Dutch Caribbean will be explored at depths yet to be seen by scientists, according to a press release from the Netherlands’ Wageningen University . The researchers will be mapping biodiversity and collecting samples from reefs off the coast of Bonaire. They plan to travel as deep as 300 meters to observe the biodiverse and mostly unexplored reefs. A submersible from Bonaire’s Curacao Public Aquarium will take researchers down to do their observations. The sub's sediment core sampler will help the team analyze sediment in the reefs. Biological samples will be analyzed and their DNA will be coded in a molecular lab in the Netherelands’ Naturalis Biodiversity Center.Read More
A complex series of locks and dams up and down the Ohio River enable interstate commerce, travel and recreation by maintaining a usable pathway for watercraft, but come with the inevitable byproducts of disrupting the river’s natural systems. To combat this, the U.S. Army Corps of Engineers uses a complex monitoring and response technology designed to minimize the negative impacts of dredging on the river ecosystem. Steven Foster, a limnologist with the Corps Water Quality Team, works at the Robert C. Byrd Lock and Dam in Gallipolis Ferry, West Virginia. He said one key area he focuses on is the welfare of mussels in the river. River dredging can smother mussel beds, so Foster and the team of engineers monitor the beds to ensure their safety.Read More
While the scientific community has formed its consensus on how ice sheets are shrinking in and around Greenland, some researchers are tracking what happens to the meltwater as it drains into the ocean each summer. Their study, published in Nature Geoscience by an interdisciplinary team of biologists, oceanographers and hydrologists, used computer models to simulate the meltwater to see where currents take it and what effect it could have on the ocean. Renato Castelao, one of the researchers and an associate professor of marine science for the University of Georgia, said one of the biggest discoveries of the study was the surprising final destinations of the ice sheets as they melt into the ocean each summer.Read More