Scientist reveals cause of lost magnetism at meteorite site

Geologists inspect an outcrop near the sample collection site. Credit: Gunther Kletetschka A University of Alaska Fairbanks scientist has discovered a method for detecting and better defining meteorite impact sites that have long lost their telltale craters. The discovery could further the study of not only Earth’s geology but also that of other bodies in… Continue reading Scientist reveals cause of lost magnetism at meteorite site

Hurricanes expected to linger over Northeast cities, causing greater damage

Hurricane Sandy over the Carolinas. Credit: NASA Goddard By the late 21st century, northeastern U.S. cities will see worsening hurricane outcomes, with storms arriving more quickly but slowing down once they’ve made landfall. As storms linger longer over the East Coast, they will cause greater damage along the heavily populated corridor, according to a new… Continue reading Hurricanes expected to linger over Northeast cities, causing greater damage

New theory connects tree uprooting and sediment movement

Credit: Unsplash/CC0 Public Domain The critical zone is Earth’s outer skin, the space between treetops and bedrock. The critical zone is a community comprising rock, water, soil, air, and the flora and fauna that live on Earth’s surface. As floods, landslides, and other geologic hazards shape landscapes, they transform the critical zone and the life-giving… Continue reading New theory connects tree uprooting and sediment movement

‘Mantle wind’ blows through slab window beneath Panama

A small pool of water sourced from a deep spring in Panama. A collaborative team, including WHOI researchers, discovered abnormal geochemical compounds beneath this region, revealing details about Earth as a dynamic system. Credit: Peter Barry/Woods Hole Oceanographic Institution Volcanic gasses are helping researchers track large-scale movements in Earth’s deep interior. Woods Hole Oceanographic Institution… Continue reading ‘Mantle wind’ blows through slab window beneath Panama

Can the Sun’s 11-Year Cycle Explain Global Warming?

An analysis of observational data and a large climate model finds Earth’s 11-year cycle is out of sync with solar fluctuations. The Earth’s global climate system fluctuates in 11-year and 3,5-year cycles find Yizhak Feliks, Justin Small, and Michael Ghil. The study was published in Climate Dynamics on July 15th. The 11-year near-periodicity recalls that… Continue reading Can the Sun’s 11-Year Cycle Explain Global Warming?

Burst of New Geochemical Evidence for Viking Travels Exactly 1,000 Years Ago

October 7, 2021 Novel geochemical dating techniques show that Norse people were in L’Anse aux Meadows exactly 1,000 years ago. Since the 1960s, archaeologists have been gathering physical evidence that Norse people landed and settled for at least a few years in far northern Newfoundland, Canada, long before Columbus sailed to the Americas. At L’Anse… Continue reading Burst of New Geochemical Evidence for Viking Travels Exactly 1,000 Years Ago

A New Mineral – From Deep Inside the Earth – Discovered in a Diamond

UNLV mineralogist Oliver Tschauner and colleagues discovered a new mineral that was carried to the surface of the Earth in a diamond (pictured here). Credit: Aaron Celestian, Los Angeles County Natural History Museum For the first time, a high-pressure calcium silicate perovskite (CaSiO3) has been identified as a naturally occurring mineral from Earth’s lower mantle,… Continue reading A New Mineral – From Deep Inside the Earth – Discovered in a Diamond

Climate uncertainty colors flood risk assessment

Credit: CC0 Public Domain Understanding how climate change will affect the flooding of rivers may become easier with a new framework for assessing flood risk that’s been developed by an interdisciplinary team from Penn State. “New home builders want to know how high they have to put their buildings to be safe for the future,”… Continue reading Climate uncertainty colors flood risk assessment

Torrential Rain Spurs Deadly Floods and Mudslides

November 14, 2021 Torrential rain in southern British Columbia and western Washington spurred deadly floods and mudslides that have damaged infrastructure and isolated communities. Torrential rain in the Pacific Northwest spurred deadly floods and mudslides that have damaged infrastructure and isolated communities in Canada and the United States. Much of the rain fell from November… Continue reading Torrential Rain Spurs Deadly Floods and Mudslides

River diversions can overcome Louisiana’s rapid sinking

An example of land building in a rapidly subsiding area near the mouth of the Mississippi River. Credit: Torbjörn Törnqvist Two new studies led by former Tulane University doctoral students show the likely benefits of land building by river diversions, despite these deposits initially causing rapid subsidence in coastal Louisiana. Published in the Journal of… Continue reading River diversions can overcome Louisiana’s rapid sinking