National Geographic : 2016 Jun
PHOTO: CREDIT HERE N Ca C 0 feet (sea level) -1,000 0 feet -2,000 -3,000 -4,000 -5,000 2,000 4,000 6,000 8,000 10,000 Cross section of canyons Grand Canyon Monterey Canyon PHOTIC ZONE Cross section at right Desalination plant Power plant Carbon capture CarbonemissionsCalcium Data center Cold ocean water Brine WarmwaterCold curr ent Outflow Inflow Desalination plant and data center Power plant Carbon sequestration MEXICO UNITED STATES San Francisco Los Angeles Sacramento CALIFORNIA Monterey Bay Direction of view below -2,225 ft -678 m -3,763 ft -1,147 m -5,049 ft -1,539 m -6,499 ft -1,981 m -8,176 ft -2,492 m -9,022 ft -2,750 m MontereyBayP ACIFIC OCEAN MontereyCanyon Monterey Santa Cruz Point Pinos Lighthouse Seal Rock Elkho rn Slough Plumbing the Depths The Monterey Canyon plunges more than two miles below the surface. A current of cold seawater moving toward the uppermost photic zone, where light penetrates the ocean and abundant marine life resides, will be pumped into the desalination plant. A Desalination Circle What do construction materials, Internet data, and freshwater have in common? They’re all part of an innovative, multi-technology desalination project in water-starved central California. Deep, cold ocean water is dense and takes more energy to desalinate. Sending it through a heat exchanger warms the water while cooling a data center, a net energy savings. Brine, the intensely salty water that’s a by-product of desalination, can be pumped back into the trench for safer dispersal, project leaders say. CONSTRUCTION MATERIALS Limestone is created by combining the calcium waste from desalination with carbon produced by the power plant. DATA Using the cold water to cool the data center cuts its energy needs nearly in half. FRESHWATER The plant pumps salt water through a membrane that filters out salt and other mate- rials, leaving potable water. Monterey Canyon extends beyond the depth shown from this perspective. The Grand Canyon cross section is located near Grandview Point.