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Tag: measure

Scientists measure ocean currents underneath ‘Doomsday Glacier’

Scientists measure ocean currents underneath ‘Doomsday Glacier’

Science
April 9 (UPI) -- For the first time, climate scientists have measured ocean conditions beneath Antarctica's Thwaites Glacier, sometimes called the "Doomsday Glacier." The fresh observations, published Friday in the journal Science Advances, show Thwaites is exposed to larger amounts of warm water than previously estimated. Advertisement Thwaites is thought to be one of the West Antarctic Ice Sheet's most vulnerable glaciers, its location and structure making it especially susceptible to influxes of warm, salty water. In recent years, scientists have watched its grounding line recede and its height shrink as melting rates accelerate. To better understand the vulnerabilities of the glacier's underbelly, scientists sent a remote-controlled submersible named Ran beneath the ice shelf to inve...
Ocean noise: Study to measure the oceans’ ‘year of quiet’

Ocean noise: Study to measure the oceans’ ‘year of quiet’

Science
AlamyOcean scientists around the world are studying the "unique moment" of quiet created by the pandemic. The researchers have called their vast listening experiment: The year of the quiet ocean. "Lockdown slowed global shipping on a scale that would otherwise be impossible," explained Prof Peter Tyack from the University of St Andrews. The scientists plan to listen to the ocean soundscape before, during and after lockdown. They have identified 200 ocean hydrophones - underwater microphones that are already in place around the global ocean. "So the idea is to use those to measure the changes in noise and how they affect marine life - like calling whales or fish choruses," Prof Tyack said. "Just like people and cities may have noticed that, with much less traffic noise and human activity, ...
Sentinel-6: ‘Dog kennel’ satellite to measure sea-level rise

Sentinel-6: ‘Dog kennel’ satellite to measure sea-level rise

Science
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New quantum thermometer can measure a fever in a tiny worm

New quantum thermometer can measure a fever in a tiny worm

Science
Sept. 11 (UPI) -- Scientists have successfully outfitted an optical microscope with quantum sensors, creating a precise microscope-based thermometer, capable of sensing a "fever" in tiny nematode worms. Quantum systems are extremely sensitive to their surrounding environs, making them ideal for measuring in vivo temperature changes. Optical microscopes allow scientists to image microscopic structures in biological samples, and when combined with fluorescent biomarkers, can be used to observe biological processes. Advertisement In a new proof-of-concept study, researchers at Osaka City University combined the two technologies in order to observe biological systems and processes in which heat and temperature play an important role. "Our system effectively integrates fast particle tracking a...
Scientists develop better way to measure, translate dog years

Scientists develop better way to measure, translate dog years

Science
July 2 (UPI) -- Estimating a dog's age isn't a matter of simple arithmetic. Translating a dog's age to human years using the popular method of multiplying by seven might be amusing, but it's of little use to a vet. Scientists now have developed a better way to measure the aging process in dogs and more precisely convert dog age to human years. Advertisement "We had been working on ways of monitoring human age and aging at the molecular level," Trey Ideker, professor at the University of California, San Diego School of Medicine and Moores Cancer Center, told UPI in an email. "Marks on DNA, called methylation marks, turned out to be a really accurate way to 'diagnose' aging." Inspired by his graduate student Tiny Wang and her love of dogs, Ideker and his research partners used the same met...