Science Current Events | Science News | Brightsurf.com
 

First evidence of under-ice volcanic eruption in Antarctica

January 21, 2008
The first evidence of a volcanic eruption from beneath Antarctica's most rapidly changing ice sheet is reported this week in the journal Nature Geosciences. The volcano on the West Antarctic Ice Sheet erupted 2000 years ago (325BC) and remains active.

Using airborne ice-sounding radar, scientists from British Antarctic Survey (BAS) discovered a layer of ash produced by a 'subglacial' volcano. It extends across an area larger than Wales.

Lead author, Hugh Corr of the BAS says, "The discovery of a 'subglacial' volcanic eruption from beneath the Antarctic ice sheet is unique in itself. But our techniques also allow us to put a date on the eruption, determine how powerful it was and map out the area where ash fell. We believe this was the biggest eruption in Antarctica during the last 10,000 years. It blew a substantial hole in the ice sheet, and generated a plume of ash and gas that rose around 12 km into air."

The discovery is another vital piece of evidence that will help determine the future of the West Antarctic Ice Sheet and refine predictions of future sea-level rise. Co-author Professor David Vaughan (BAS) says,

"This eruption occurred close to Pine Island Glacier on the West Antarctic Ice Sheet. The flow of this glacier towards the coast has speeded up in recent decades and it may be possible that heat from the volcano has caused some of that acceleration. However, it cannot explain the more widespread thinning of West Antarctic glaciers that together are contributing nearly 0.2mm per year to sea-level rise. This wider change most probably has its origin in warming ocean waters."

British Antarctic Survey


Related Ice Sheet Current Events and Ice Sheet News Articles


NASA Begins Sixth Year of Airborne Antarctic Ice Change Study
NASA is carrying out its sixth consecutive year of Operation IceBridge research flights over Antarctica to study changes in the continent's ice sheet, glaciers and sea ice. This year's airborne campaign, which began its first flight Thursday morning, will revisit a section of the Antarctic ice sheet that recently was found to be in irreversible decline.

Past climate change and continental ice melt linked to varying CO2 levels
Scientists at the Universities of Southampton and Cardiff have discovered that a globally warm period in Earth's geological past featured highly variable levels of CO2.

Icebergs once drifted to Florida, new climate model suggests
Using a first-of-its-kind, high-resolution numerical model to describe ocean circulation during the last ice age about 21,000 year ago, oceanographer Alan Condron of the University of Massachusetts Amherst has shown that icebergs and meltwater from the North American ice sheet would have regularly reached South Carolina and even southern Florida.

Around the world in 400,000 years: The journey of the red fox
Imagine attempting to trace your genetic history using only information from your mother's side. That's what scientists studying the evolution of the red fox had been doing for decades.

Team advances understanding of the Greenland Ice Sheet's meltwater channels
An international research team's field work, drilling and measuring melt rates and ice sheet movement in Greenland is showing that things are, in fact, more complicated than we thought.

Changing Antarctic waters could trigger steep rise in sea levels
Current changes in the ocean around Antarctica are disturbingly close to conditions 14,000 years ago that new research shows may have led to the rapid melting of Antarctic ice and an abrupt 3-4 metre rise in global sea level.

Greenland Ice Sheet more vulnerable to climate change than previously thought
A new model developed by researchers at the University of Cambridge has shown that despite its apparent stability, the massive ice sheet covering most of Greenland is more sensitive to climate change than earlier estimates have suggested, which would accelerate the rising sea levels that threaten coastal communities worldwide.

Study finds global sea levels rose up to 5 meters per century at the end of the last 5 ice ages
Land-ice decay at the end of the last five ice-ages caused global sea-levels to rise at rates of up to 5.5 metres per century, according to a new study.

Study resolves discrepancy in Greenland temperatures during end of last ice age
A new study of three ice cores from Greenland documents the warming of the large ice sheet at the end of the last ice age - resolving a long-standing paradox over when that warming occurred.

Past temperature in Greenland adjusted
One of the common perceptions about the climate is that the amount of carbon dioxide in the atmosphere, solar radiation and temperature follow each other - the more solar radiation and the more carbon dioxide, the hotter the temperature.
More Ice Sheet Current Events and Ice Sheet News Articles

Glacial Geology: Ice Sheets and Landforms

Glacial Geology: Ice Sheets and Landforms
by Matthew M. Bennett (Editor), Neil F. Glasser (Editor)


The new Second Edition of Glacial Geology provides a modern, comprehensive summary of glacial geology and geomorphology. It is has been thoroughly revised and updated from the original First Edition. This book will appeal to all students interested in the landforms and sediments that make up glacial landscapes.The aim of the book is to outline glacial landforms and sediments and to provide the reader with the tools required to interpret glacial landscapes. It describes how glaciers work and how the processes of glacial erosion and deposition which operate within them are recorded in the glacial landscape.The Second Edition is presented in the same clear and concise format as the First Edition, providing detailed explanations that are not cluttered with unnecessary detail. Additions...

From the Streets to the Sheets Box Set: Volume 3 (G Street Chronicles Presents)

From the Streets to the Sheets Box Set: Volume 3 (G Street Chronicles Presents)
by G Street Chronicles


• 4 FULL LENGTH NOVELS from the hottest publishing company in the industry, G Street Chronicles!
• Over a MILLION books sold and counting!
• Set includes 4 books from top rated authors from the G Street Chronicles camp.
• Set contains selections from our Essence and Street divisions!
• Limited time only! Pass the word!

BOX SET INCLUDES:
Married to His Lies by Mz. Robinson
Grind by Fire & Ice
City Lights by George Sherman Hudson
Stud by Sa'id Salaam


From the Streets to the Sheets "Gold" 31 Short Story/Novella Box Set (G Street Chronicles Presents)

From the Streets to the Sheets "Gold" 31 Short Story/Novella Box Set (G Street Chronicles Presents)
by G Street Chronicles


• 31 SHORT STORIES & NOVELLAS from the hottest publishing company in the industry, G Street Chronicles!
• Over a MILLION books sold and counting!
• Set includes 31 short stories & novellas from some of the top rated authors from the G Street Chronicles camp.
• Set contains selections from our Essence and Street divisions!
• Limited time only! Pass the word!

GOLD "VOLUME 2" BOX SET INCLUDES:
Anybody Can Get It by Cachet
Anybody Can Get It II: Retribution by Cachet
Bait and Snatch by BlaQue
Bait and Snatch 2 by BlaQue
Boss by George Sherman Hudson
White World by George Sherman Hudson
Chronicles of a Junky by Sa’id Salaam
Chronicles of a Junky II by Sa’id Salaam
Chronicles of a...

Ice Castles, Theme from (Through the Eyes of Love) Sheet Piano Music by Marvin Hamlisch, lyrics by Carole Bayer Sager

Ice Castles, Theme from (Through the Eyes of Love) Sheet Piano Music by Marvin Hamlisch, lyrics by Carole Bayer Sager
b


VERY GOOD SHEET MUSIC

From the Streets to the Sheets "Platinum" 20 Book Box Set (G Street Chronicles Presents)

From the Streets to the Sheets "Platinum" 20 Book Box Set (G Street Chronicles Presents)
by G Street Chronicles


• 20 FULL LENGTH NOVELS from the hottest publishing company in the industry, G Street Chronicles!
• Over a MILLION books sold and counting!
• Set includes 20 books from some of the top rated authors from the G Street Chronicles camp.
• Set contains selections from our Essence and Street divisions!
• Limited time only! Pass the word!
20 BOX SET INCLUDES:
Havoc on a Homewrecker by Mz. Robinson
Grind by Fire & Ice
Dirty DNA by BlaQue
Beastmode by Joe Awsum
Essence of a Bad Girl by Mz. Robinson
Silk by George Sherman Hudson
School Boy by Katavious Ellis
Sinning & Sanctified by Amy Warren-Patterson
Family Ties by George Sherman Hudson
Hood Symphony by Tnicyo
Married to His Lies by Mz....

Ice Sheets and Late Quaternary Environmental Change

Ice Sheets and Late Quaternary Environmental Change
by Martin J. Siegert (Author)


Ice Sheets and Late Quaternary Environmental Change provides a detailed account of the temporal and spatial distribution of ice sheets during the last ice age, and how these ice masses interacted with the environment. This is the first book in 20 years to detail the sizes of ice sheets during the last glaciation and the first to discuss their role in past climate change.
Arranged in two parts, the first part provides the tools required for evaluating past ice sheets while the second part uses these tools to establish the size, extent and dynamics of late Quaternary ice sheets. Assuming no prior knowledge of Quaternary Science, the discussion progresses from the basic principles of how and why ices ages occur, to the interpretation of proxy records of past climate and ocean...

Boy on Ice: The Life and Death of Derek Boogaard

Boy on Ice: The Life and Death of Derek Boogaard
by John Branch (Author)


The much-anticipated debut from the Pulitzer Prize–winning New York Times reporter, Boy on Ice is a moving human story and behind-the-scenes account of a life lived in the glare of sporting fame. The tragic death of hockey star Derek Boogaard at twenty-eight was front-page news across the country in 2011 and helped shatter the silence about violence and concussions in professional sports. Now, in a gripping work of narrative nonfiction, acclaimed reporter John Branch tells the shocking story of Boogaard's life and heartbreaking death.   Boy on Ice is the richly told story of a mountain of a man who made it to the absolute pinnacle of his sport. Widely regarded as the toughest man in the NHL, Boogaard was a gentle man off the ice but a merciless fighter on it. With great narrative...

The Ice Limit

The Ice Limit
by Douglas Preston (Author), Lincoln Child (Author)


The largest known meteorite has been discovered, entombed in the earth for millions of years on a frigid, desolate island off the southern tip of Chile. At four thousand tons, this treasure seems impossible to move. New York billionaire Palmer Lloyd is determined to have this incredible find for his new museum. Stocking a cargo ship with the finest scientists and engineers, he builds a flawless expedition. But from the first approach to the meteorite, people begin to die. A frightening truth is about to unfold: The men and women of the Rolvaag are not taking this ancient, enigmatic object anywhere. It is taking them.

Ice

Ice
by Sarah Beth Durst (Author)


When Cassie was a little girl, her grandmother told her a fairy tale about her mother, who made a deal with the Polar Bear King and was swept away to the ends of the earth. Now that Cassie is older, she knows the story was a nice way of saying her mother had died. Cassie lives with her father at an Arctic research station, is determined to become a scientist, and has no time for make-believe.

Then, on her eighteenth birthday, Cassie comes face-to-face with a polar bear who speaks to her. He tells her that her mother is alive, imprisoned at the ends of the earth. And he can bring her back -- if Cassie will agree to be his bride.

That is the beginning of Cassie's own real-life fairy tale, one that sends her on an unbelievable journey across the brutal Arctic, through the...

Dynamics of Ice Sheets and Glaciers (Advances in Geophysical and Environmental Mechanics and Mathematics)

Dynamics of Ice Sheets and Glaciers (Advances in Geophysical and Environmental Mechanics and Mathematics)
by Ralf Greve (Author), Heinz Blatter (Author)


Dynamics of Ice Sheets and Glaciers presents an introduction to the dynamics and thermodynamics of flowing ice masses on Earth. Based on an outline of general continuum mechanics, the different initial-boundary-value problems for the flow of ice sheets, ice shelves, ice caps and glaciers are systematically derived. Special emphasis is put on developing hierarchies of approximations for the different systems, and suitable numerical solution techniques are discussed. A separate chapter is devoted to glacial isostasy. The book is appropriate for graduate courses in glaciology, cryospheric sciences, environmental sciences, geophysics and related fields. Standard undergraduate knowledge of mathematics (calculus, linear algebra) and physics (classical mechanics, thermodynamics) provide a...

© 2014 BrightSurf.com