For information, call Amelia Rietzel at (661) 255-4341. SANTA CLARITA – Three city parks will hold free egg hunts Saturday for kids up to age 10. Partnering with the Saugus Action Committee and local businesses, the city will host the hunts at 10a.m. at Canyon Country Park, 17615 Soledad Canyon Road; Valencia Glen Park, 23750 Via Gavola; and Central Park, 27150 Bouquet Canyon Road, Saugus. Egg hunters will be divided by age group and will search for eggs, candy and toys. Participants should bring their own baskets. Mr.E.Bunny – so named to ensure a secular event in public parks – will be available for photos with kids. Local sponsors for the 2007 Eggstravaganza include McDonald’s, Wal-Mart, Mountasia, Santa Clarita Lanes, Fun & Fit Gymnastics and Lamppost Pizza. 160Want local news?Sign up for the Localist and stay informed Something went wrong. Please try again.subscribeCongratulations! You’re all set!
Now a new study using satellite data from NASA’s Ice Cloud and land Elevation satellite (ICESat) combined with radar data collected in 2000 from the space shuttle Endeavour, suggests the loss of ice among the approximately 46,000 glaciers in the Himalayas and Tibet averaged 12 billion tonnes annually between 2003 and 2008. This figure is still around a third lower than estimates from field studies in the region.Leader of the new study, Prof. Dr. Andreas Kääb, of the University of Oslo in Norway, said that ICESat, launched in 2003, uses a laser altimeter to study the polar ice sheets, which is more suitable for flat terrains than the mountains of the Himalayas. They corrected for this by using measurements of elevation from the space shuttle, and cross-checking elevation measurements of the glaciers against those of adjacent areas to satisfy themselves that reductions in elevation of the glaciers were really caused by loss of ice.The research team were able to produce a map of the glaciers with a resolution of 70 meters, and showed that over the period of 2003 to 2008 the elevation reduced by an average of 21 centimeters a year. Professor Kääb noted that glaciers are not all melting at the same rate, and a few are static or even growing. In Karakoram the glaciers are barely changing, while in the north west of India glaciers are melting at the estimated rate of 66 centimeters annually. He also said the studies would need to span several decades to confirm any climate trends. What the study does do is give scientists a new means of using the ICESat data, and the results also suggest the long-held theory that ice melting is reduced if the glacier has an insulating covering of rocky debris may be wrong, since their results indicate these glaciers (such as Ngozumpa in Nepal) are melting at about the same rate as clean glaciers.Changes in glaciers in high mountainous regions such as the Himalayas can have marked effects on water resources for the millions of people living in the region and can pose significant hazards through effects such as glacial floods and rock avalanches. Explore further Citation: New satellite data on melting of Himalayan glaciers (2012, August 24) retrieved 18 August 2019 from https://phys.org/news/2012-08-satellite-himalayan-glaciers.html NASA Ice Satellite Maps Profound Polar Thinning This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. More information: Nature doi:10.1038/nature.2012.11252 © 2012 Phys.Org Journal information: Nature (Phys.org)—There is consensus among scientists that the glaciers in the Himalayas and Tibet are shrinking, but there is disagreement on the extent of the shrinkage because of the difficulty in interpreting satellite data. In 2010 satellite data from the Gravity Recovery and Climate Experiment (GRACE) satellite was analyzed and the researchers concluded the glaciers were losing around 50 billion tonnes of ice each year, but the same data was interpreted earlier this year by another team of researchers who concluded the annual loss of ice was around five billion tonnes.