With new tech, scientists probe what lies beneath the sound _ heraldnet. com

SEQUIM — The morning of Jan. Electricity and circuits test 6 dawned cold and clear near the mouth of Sequim Bay. Duke electric orlando The silence was broken only by a gunshot coming from across the water: someone out duck hunting.

Here at Marine Sciences Laboratory, part of Pacific Northwest National Laboratories, a team of researchers was putting two inventions to the test.

One is a prototype device called an AMP, for Adaptable Monitoring Package. Gas station It’s an elongated fiberglass enclosure outfitted with numerous instruments designed to take measurements from the sea floor.

The other device is the remote-operated vehicle, or ROV, that they plan to use to take the AMP down to the bottom of the bay, attach it to a base station on the sea floor, and return to the surface without it. Gas z factor It’s an off-the-shelf vehicle called a Seaeye “Falcon,” to which the researchers attached an external frame to hold double the number of thrusters so it can carry the 600-pound AMP.

The team of about a half-dozen researchers, led by James Joslin, senior mechanical engineer at the University of Washington’s Applied Physics Laboratory, and Brian Polagye, an assistant professor of mechanical engineering at the UW, began developing these technologies at the behest of the Snohomish County Public Utility District.

For several years, the PUD pursued research into using undersea turbines to generate electricity from tides, and needed a way to install monitoring technology down near their turbines.

In 2014, however, the U.S. Gas zauberberg 1 Department of Energy backed out of funding the project after cost projections just about doubled from $20 million to $38 million. Electricity usage calculator kwh The PUD abandoned the project after spending a little under $8 million.

The Applied Physics Lab team kept at developing its technology, however, and repurposed it so it can be used for basic research on the health and ecosystem of Puget Sound or other projects requiring undersea monitoring for long periods of time.

The end result is a flexible and simplified monitoring and deployment system that is much cheaper to build and use than high-end custom-built equipment.

The AMP’s instrumentation includes two kinds of sonar, a current profiler, three visual cameras, four hydrophones as well as strobe lights. Ag gaston birmingham 120 It’s connected to computers on shore that gather and record data.

Admiralty Inlet, the mouth of Puget Sound between Whidbey Island and the Olympic Peninsula, is an ideal test laboratory for these sorts of instruments.

It’s where Snohomish PUD planned its tidal energy project, because of the strong currents in the reach. Gas vs electric water heater It’s also a key location for studying how oceanic conditions affect Puget Sound, especially when it comes to factors like nutrients, oxygen levels, acidity, and the health of marine wildlife populations.

One ongoing study at the UW has sensors mounted on the bottoms of two Washington State Ferries plying the Port Townsend-Coupeville route, to measure water currents and conditions at various depths.

That study began in May 2014 and is expected to run for five years, the average service period for a state ferry before scheduled dry dock maintenance.

“We’d like to see how much ocean water, which would be deep, cold, dense water, is coming in at the bottom of Admiralty Reach, and how much fresh surface water is going out,” said Jim Thomson, principal oceanographer with the Applied Physics Laboratory, who is conducting the research.

“When we have these fish kills and other events around Puget Sound, some of it can be locally sourced, and some of it is natural, coming in from the ocean,” Thomson said.

“What’s coming in the gateway; what’s the ocean’s influence on water quality; and that in turn will help us understand what our local influence is on water quality,” he said.

Thomson said the data from the study will be uploaded to Nanoos.org, the website of the Northwest Association of Networked Ocean Observing Systems, as part of its NVS Explorer web application.

NVS Explorer collects a vast amount of information on currents, winds, salinity, water temperature and other data from buoys, ship-based and shore-based instruments, overflights, and research stations on land or on the sea floor, and presents them all in an interactive map.

On the morning of Jan. Electricity quiz and answers 6, the APL team gathered on the deck of the R/V Jack Robertson, the APL’s custom-built work boat, for last-minute checks, before lowering the ROV with the AMP into the water.

The team had tested the full system since June, both here, in Lake Washington, and in the UW’s Marine Science Building, which has a 13-foot-deep saltwater tank for submerged testing.

They had encountered several problems along the way. K electric share price In the indoor tank, a rope line got sucked into one of the thrusters; a wire got pinched and needed to be replaced; and some dirty connectors needed to be cleaned. Hp gas One field test went awry when the AMP developed an electrical ground fault and stopped functioning, forcing the test to be cut short.

Lowering the device into the water and cutting it loose from the ship went smoothly. Gas refrigerator not cooling Joslin, wearing a shoulder-mounted control unit, watched the view from the cameras on three screens on the ship while Emma Cotter, a doctoral student, monitored the feed from sonar sensors on a laptop.

The water was cloudy, so Joslin at first had to lean over Cotter’s shoulder while searching for the telltale cylinder of the base station they’d lowered onto the seabed the day before.

They quickly picked up the echo of an object, but when the ROV got close enough to see it on the cameras, they found they were looking at a barnacle-encrusted oblong object lying on the sea floor.

They discovered later that day they’d found an intake pipe for the marine lab. Gas 87 They brought the ROV back to the boat to try again. Gas x ultra strength directions This time they located their target.

Joslin pushed the vehicle forward into it. M gasbuddy app Its “U” shape is designed to guide the vehicle and the AMP precisely into place so the AMP can connect its instruments to the base station.

Step one was complete. Wb state electricity board recruitment 2015 Step two was to connect the device to the base station and bring the ROV back to the boat. R gasquet tennis Shortly after Cotter powered up the AMP from a computer room on shore, all the monitors went dark.

They diagnosed a ground fault in the ROV. Gasco abu dhabi email address No power, no way to detach the AMP from the vehicle, or to get the vehicle back to the boat. Origin electricity account The engineers huddled to find a solution.

“We have had a lot of problems with faults, especially in seawater,” explained Chris Siani, a senior engineer with APL who designed some of the electrical systems. Electricity allergy “It’s one of the things that will really take you down.”

The team decided to turn off the AMP to clear out the electrical system, then restart it. D cypha electricity The trick worked, in part, and Joslin used a screwdriver to make the fault detection system on the control box less sensitive and less likely to trip that relay again. Gas explosion Power was restored to half the ROV’s thrusters.

It was enough power to pilot the ROV away from the AMP and base station, but with half the thrusters down, it was hard to control. Electricity electricity song “It’s a little squirrelly,” Joslin called out to the team waiting on the deck to retrieve the vehicle.

They managed to get it back on board and secured for its return trip to UW. Gas water heater reviews 2013 On the shore, the computers were already starting to collect the AMP’s data.