WASHINGTON, Oct. 13 (TNSres) -- The U.S. Department of the Interior Geological Survey issued the following abstract of an article on July 1, 2024, entitled "Assessing the Utility of Uncrewed Aerial System Photogrammetrically Derived Point Clouds for Land Cover Classification in the Alaska North Slope". The article was written by Jung-Kuan (Ernie) Liu, Rongjun Qin and Samantha Arundel. * * * Uncrewed aerial systems (UASs) have been used to collect "pseudo field plot" data in the form of large-s  more

WASHINGTON, Oct. 12 (TNSres) -- The U.S. Department of the Interior Geological Survey Volcano Science Center issued the following report (No. 2024-5062) on Oct. 4, 2024, entitled "Monitoring Lahars". The report was written by Weston A. Thelen, John J. Lyons, Alexandra M. Iezzi and Seth C. Moran. * * * Introduction Lahars, or debris flows that originate from a volcano (Pierson and Scott, 1985; Pierson, 1995), are among the most destructive, far-reaching, and persistent hazards on stratovolcano  more

WASHINGTON, Oct. 12 (TNSres) -- The U.S. Department of the Interior Geological Survey Volcano Science Center issued the following report (No. 2024-5062) on Oct. 4, 2024, entitled "Special Topic--Eruption Plumes and Clouds". The report was written by David J. Schneider and Alexa R. Van Eaton. * * * Introduction Explosive eruptions create plumes of volcanic ash and gas that can rise more than 30,000 feet (9.1 kilometers [km]) above sea level within minutes of eruption onset. The resulting cloud  more

WASHINGTON, Oct. 12 (TNSres) -- The U.S. Department of the Interior Geological Survey Volcano Science Center issued the following report (No. 2024-5062) on Oct. 4, 2024, entitled "Special Topic--Rapid-Response Instrumentation". The report was written by Ashton F. Flinders. * * * Introduction Based on the reports of Ewert and others (2005, 2018) and Moran and others (2008), most U.S. volcanoes are currently under-monitored and are likely to remain so until the goals of the National Volcano Ear  more

WASHINGTON, Oct. 12 (TNSres) -- The U.S. Department of the Interior Geological Survey Volcano Science Center issued the following report (No. 2024-5062) on Oct. 4, 2024, entitled "Streams, Springs, and Volcanic Lakes for Volcano Monitoring". The report was written by Steven E. Ingebritsen and Shaul Hurwitz. * * * Introduction Volcanic unrest can trigger appreciable change to surface waters such as streams, springs, and volcanic lakes. Magma degassing produces gases and soluble salts that are   more

WASHINGTON, Oct. 12 (TNSres) -- The U.S. Department of the Interior Geological Survey Volcano Science Center issued the following report (No. 2024-5062) on Oct. 4, 2024, entitled "Volcanic Gas Monitoring". The report was written by Jennifer L. Lewicki, Christoph Kern, Peter J. Kelly, Patricia A. Nadeau, Tamar Elias and Laura E. Clor. * * * Introduction As magma rises through the crust, decreasing pressure conditions allow volatiles to exsolve from the magma. These volatiles then migrate upwar  more