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12 June 2013
AGU Video: Big Meadows Fire: Connecting the dots between warming winters and wildfires while at AGU Chapman Conference in Colorado
Jeff Maugans, a retired district naturalist for the National Park Service, talks about the Big Meadows Fire on Tuesday afternoon while on a field trip in Rocky Mountain National Park as part of the AGU Chapman Conference on ‘Communicating Climate Science: A Historic Look to the Future.’
19 April 2013
Exploring a changing coast in the face of sea level rise – Galveston, Texas
Over 80 scientists gathered at a conference here this week to share their latest research on past, current, and projected future sea level rise and to discuss how this information can be used to shape policy. Despite their diverse perspectives and expertise, one thing the scientists agreed on for sure: the rates and impacts of sea level rise are local and communities are facing a growing risk.
16 November 2012
Over the river and through the marshes
Seventeen ecologists and geomorphologists donned heavy gloves, coats and waterproof boots in Tuesday’s bitter cold to explore the marshes of Jug Bay Wetland Sanctuary. The 1,600-acre sanctuary, about 20 miles east of Washington, D.C., sits along Patuxent River, and is home to a broad array of wildlife, from ospreys to bald eagles. Gregory Kearns guided them through the wetlands, showing them the effects of sea level rise on its marshes.
15 June 2012
Volcanic impacts on everyday life — circa 1600
Massive volcanic eruptions that spew sulfur-rich particles into the atmosphere can disrupt climate around the globe, leading to cooler temperatures worldwide. Researchers can track the impacts by looking at ice cores or tree rings that record summer growth, but a different approach involves scouring through historical records to see what kind of an impact these volcanic explosions had on everyday life.
Quiet Eyjafyallajökull littered with reminders of 2010 explosion
Three years ago, icebergs floated at the base of this glacier, in the milky water of a glacial lagoon. But in May 2010, Eyjafjallajökull erupted forcefully beneath Gígjökull, causing torrents of melted water called jökulhlaups to surge down the valley and into the lagoon, carrying with them enough boulders and debris fill it up, displacing all the water.
14 June 2012
Volcanoes lessen global rain — by more than climate model predicts
Scientists are working to understand how explosive volcanic eruptions – and potential geoengineering efforts – would affect rain worldwide. And climate models might be underestimating how much precipitation decreases after eruptions.
13 June 2012
Exploring where Earth’s crust rips apart
Þingvellir, Iceland – There aren’t many places in the world where you can walk along a “mid-ocean ridge” and still keep your feet dry. But here the separation of two vast slabs of Earth’s crust—a slow-moving drama usually hidden far below the ocean waves at the bottom of the sea—takes place in plain view.
12 June 2012
Citizen-scientists answer call for Icelandic volcano ash samples
When Iceland’s Grímsvötn volcano erupted in May 2011, ejecting 0.7 cubic kilometers (0.2 cubic miles) of ash far up into the atmosphere, most of the material headed north to the pole. Computer models predicted the path of the plume, satellites beamed back images, but one researcher turned to a low-tech and inexpensive method of tracking the ash fall – cellophane sticky tape.
Volcanic lightning examined through ash grains
GeoSpace is in Selfoss, Iceland this week, reporting from AGU’s Chapman Conference on Volcanism and the Atmosphere. Check back for posts on the science presented at the meeting, as well as field trips to nearby volcanoes and geologic features. Selfoss, Iceland — The awesome sight of explosive volcanic eruptions occasionally includes a light show as well. Lightning can be sparked throughout the eruption – as the ash, rocks and gases …
11 June 2012
Planting trees in Iceland to shield against volcanic ash
Iceland is undertaking Europe’s largest reclamation project to replant birch and willows, especially in volcanically active areas, to help reduce erosion and improve the island’s ecological health.
GeoSpace is a blog on Earth and space science, managed by AGU’s Public Information staff. The blog features posts by AGU writers and guest contributors on all sorts of relevant science topics, but with a focus on new research and geo and space sciences-related stories that are currently in the news.