Officials have lifted a tsunami warning issued earlier Sunday after a powerful earthquake struck southern Chile. There were no immediate reports of damage or injuries. A tsunami watch, however, remains in place. The U.S. Geological Survey said the temblor had a magnitude of 7.6 and was centered 40 kilometers southwest of Puerto Quellon on Chile’s […]
(ANCHORAGE, Alaska) – The Alaska Department of Transportation and Public Facilities (ADOT&PF) announced Nicholas Mastrodicasa has been awarded the US Geological Survey’s Henry Gannett Award. This national award recognizes distinguished contributions to the topographic mapping of the United States. Mr. Mastrodicasa has been involved with efforts to map Alaska since 2006. As manager for the […]
U.S. Geological Survey topographic maps give you a choice on the height of Mount Isto. Depending on what map scale you choose, the mountain in the Brooks Range is either higher or lower than 9,000 feet. Using a new combination of techniques, an Alaska researcher has crowned Mt. Isto the highest peak in America’s arctic, […]
No reports of damage was received from the sparsely populated area in the western Aleutians after a 6.2 magnitude struck 58 miles to the east-southeast of the island of Atka at 7:03 am on Monday morning. The quake struck approximately 10 miles below the seafloor to the south of the Aleutian Chain where the Pacific […]