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California’s winter is officially one of the snowiest ever recorded, with the snowpack measured at 221% of normal on Monday by the California Department of Water Resources in its annual beginning of April survey. California’s #snowpack is now one of the largest ever, bringing both drought relief and flooding concerns, however DWR’s State-Federal Flood Operations Center and DWR’s Snow Surveys and Water Supply Forecasting Unit are helping local agencies plan for the Spring snowmelt season. pic.twitter.com/RzSozSDEtM — CA – DWR (@CA_DWR) April 3, 2023

The first jolt, which struck off the coasts of Japan’s remote Bonin Islands, was recorded at magnitude 7.9 and up to 680 kilometers (423 miles) underground, making it one of the deepest quakes of its size. Then another oddity emerged in the cascade of aftershocks that followed: a tiny temblor that, if confirmed, would be the deepest earthquake ever detected. The ultradeep quake, described recently in the journal Geology, is estimated to have struck some 751 kilometers (467 miles) beneath the surface in the layer of our planet known as the lower mantle, where scientists have long thought earthquakes unlikely,...

Gigantic amoebas have been found in the Mariana Trench, the deepest region on Earth. During a July 2011 voyage to the Pacific Ocean chasm, researchers with Scripps Institution of Oceanography at UC San Diego and National Geographic engineers deployed untethered landers, called dropcams, equipped with digital video and lights to explore the largely mysterious region of the deep sea. The team documented the deepest known existence of xenophyophores, single-celled animals exclusively found in deep-sea environments. Xenophyophores are noteworthy for their size, with individual cells often exceeding 4 inches (10 centimeters), their extreme abundance on the seafloor and their role as...

DESPITE the intelligence failure that led the Bush administration to believe Iraq had weapons of mass destruction, the Pentagon is pressing ahead with the development of technologies designed to destroy WMDs. Its latest idea is a bomb that can destroy deeply buried WMD storage bunkers by cutting through earth and concrete inside a bubble of air. Traditional "bunker busters" are streamlined bombs that rely on sheer weight to force their way through soil, rock or concrete. But the new design has a blunt nose that forces the earth ahead of it out to the sides, creating a cavity the bomb...

Link post to direct interested readers to the post in the "chat" section of FR, where all discussion should take place: Geology Picture of the Week, October 5-11, 2003: The World's Deepest Chasms

Even though this image isn't "new", I found it while on a quick quest to determine the world's second-deepest canyon (I'm making a list of the world's geological seconds, with the basic presumption that they are are lot less well known that the world's firsts). It all started with that Victoria Falls picture last week. Anyway, the image below is nice, but what you really need to do is get a pair of red-blue 3-D glasses and go to the Web site below the image, and look at the 3-D anaglyph image with the 3-D glasses. Wow. Both the world's...

World's Deepest-Diving Submarine Missing Tuesday July 1, 2003 12:49 AM By HANS GREIMEL Associated Press Writer TOKYO (AP) - The world's deepest-diving submarine has disappeared in the choppy Pacific Ocean off Japan, a setback to deep-sea research on everything from earthquakes to rare bacteria. Kaiko, a bright yellow submarine which entered the record books in 1995 by diving 36,008 feet to the bottom of the Challenger Deep - the ocean's deepest point - snapped its tether as a typhoon approached in late May and has been missing since then, officials said Monday. Daniel J. Fornari, chief scientist for deep submergence...