Isostatic rebound and our rocky future

“One example of where relatively small changes to geological stress can have a big impact on volcanic activity is the Pavlov volcano in Alaska. As McGuire describes, this volcano only erupts during Autumn and Winter. At that time storms ride up into a nearby ocean zone, pushing an average 10cm or 15cm rise in sea level. The added weight of the water is enough to torque the crust and push magma out. Now imagine the kind of extra volcanic activity that could result from 1, 6, or 250 feet of global sea level rise under the raging rate of human-caused warming and you begin to understand the concern.”We have let the Genie out of the bottle, It will never be the same again. 6C will melt most if not the entire ice caps. imagine how much ‘Torgue’ that will put on the plates?
Another great link from Robertscribbler

“Between about 20,000 and 5,000 years ago, our planet underwent an astonishing climatic transformation. Over the course of this period, it flipped from the frigid wasteland of deepest and darkest ice age to the – broadly speaking – balmy, temperate world upon which our civilisation has developed and thrived. During this extraordinarily dynamic episode, as the immense ice sheets melted and colossal volumes of water were decanted back into the oceans, the pressures acting on the solid Earth also underwent massive change. In response, the crust bounced and bent, rocking our planet with a resurgence in volcanic activity, a proliferation of seismic shocks and burgeoning giant landslides.
Climate Change will shake the Earth

“The disappearing ice, sea-level rise and floods already forecast for the 21st century are inevitable as the earth warms and weather patterns change – and they will shift the weight on the planet. Professor McGuire calls this process “waking the giant” – Something that can be done with just a few gigatonnes of water in the right – or wrong – place.The untold – and terrifying – story behind the earthquake that devastated Nepal last Saturday morning begins with something that sounds quite benign. It’s the ebb and flow of rainwater in the great river deltas of India and Bangladesh, and the pressure that puts on the grinding plates that make up the surface of the planet.Recently discovered, that causal factor is seen by a growing body of scientists as further proof that climate change can affect the underlying structure of the Earth.”

Our planet is always on the move, but sometimes it is more restless than usual. As the last ice age came to an end, around 10,000 years ago, there was a surge in volcanic activity as ice caps melted, decreasing pressure on the Earth’s crust.

Since then our planet has reached a steady state, with around 50 volcanoes erupting each year and around 150 earthquakes greater than magnitude six. But geo-hazards expert Bill McGuire is concerned that human-induced climate change may bring a resurgence in activity in the coming centuries. “In areas of major ice loss, such as Alaska, Iceland, the Andes and Himalayas we may see a rise in earthquakes, volcanism and landslides” says McGuire, who describes this scenario in Waking the Giant. “It only takes the pressure of a handshake to trigger a quake or volcanic blast in a primed system.”
Releasing the pressure on a restless earth

21148_10200351251116575_299026901_n

Advertisements

Activist, sailor, passionate about the earth. Brace for impact, based on the way the world is being operated and treated. Live every day as precious.

Posted in Uncategorized
8 comments on “Isostatic rebound and our rocky future
  1. Kevin Hester says:

    “Tides, winds and ocean currents play a role in these regional differences, but an increasingly important mover and shaker is the solid Earth itself. Global warming is not just affecting the surface of our world; it’s making the Earth move under our feet.”

    “NASA Discusses rising sea levels
    Unless a volcano or earthquake are in the news, we tend to think of our home planet as solid rock. But 50 miles below our feet, there’s a layer thousands of miles thick that can flow like a liquid over thousands of years. The tectonic plates of Earth’s crust float on this viscous layer, called the mantle, like a vanilla wafer on a very thick pudding.”
    http://www.nasa.gov/feature/goddard/glacial-rebound-the-not-so-solid-earth

    Like

  2. Kevin Hester says:

    “During the last ice age, Greenland’s ice sheet was much larger than now, and its enormous weight caused Greenland’s crust to slowly sink into the softened mantle rock below. When large parts of the ice sheet melted at the end of the ice age, the weight of the ice sheet decreased, and the crust began to rebound. It is still rising, as mantle rock continues to flow inwards and upwards beneath Greenland.”
    http://www.desdemonadespair.net/2016/09/greenland-ice-is-melting-7-percent.html

    Like

  3. Kevin Hester says:

    “As the Greenland ice sheet creaks and cracks, scientists are listening.
    Since the 1990s, researchers have seen a rise in the number of glacial earthquakes emanating from Greenland’s glaciers—earthquakes that stem from massive blocks of ice calving from glacier fronts. Nearly half of the glacial earthquakes in the past quarter century occurred between 2011 and 2013, a team of researchers has now found after digging through seismic data. These earthquakes could be a signal of a warming climate’s effect on the stability of the ice sheet itself.”

    https://eos.org/articles/more-frequent-glacial-quakes-on-greenland-signal-ice-retreat

    Like

  4. Kevin Hester says:

    We are in for a very, very rocky future.

    Like

  5. chura87 says:

    Reblogged this on Chura Writer and commented:
    One of the minor threads in my novel, Katsuren, concerns the discovery of a rocky structure submerged a few meters off the coast of Yonaguni, in Okinawa. It is darkly fascinating to think about something that once was above the waterline now being submerged. One always asks, Why? How? Isostatic rebound is one answer. Here is what Kevin Hester has to say about isostatic rebound.

    Liked by 1 person

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

Kevin Hester
Kevin Hester is currently living on Rakino Island, a small island in the Hauraki Gulf near Auckland New Zealand, monitoring the unravelling of the biosphere and planning Professor Guy McPherson’s November 2016 NZ and Australian speaking tour which is a follow up to the 2014 speaking tour. The Island has no grid tied electricity or reticulated water. I catch my own water from the roof and generate my electricity from the ample solar radiation on the island.
My Submission to the Ministry of the Environment
Kevin Hester, Dropping Anchor in an Exponential World
Follow Kevin Hester on WordPress.com
Blog Stats
  • 66,183 hits
Tags
2C 4C 5C 6th Great extinction 16 Ocean Passages Abrupt Climate Change Acidification of Oceans Alaska North Slope Alberta AMEG Anecdotes of Neil Finn and My Life "Colliding" Anthropogenic Climate Disruption-ACD Anthropogenic Emissions Anti-Nuclear Appearances Arctic Methane Emergency Group Arctic News Blog Assassination Atlantic Meridional Overturning Circulation-AMOC Atmospheric CO2 Australian Greens Bill McKibben Bleaching Event Brush Fire Canada Catastrophe Cenozoic Era China Chris Hani Chris Mooney Climate-Exodus Climate Change Research Centre CO2 Warming Coral Reefs Coral Sea Cory Morningstar CounterPunch Cruise Industry Dahr Jamail Deep Green Resistance Donald Trump Dr. Guy McPherson Dr. James E Hansen Dr. Mike Joy Draught Dr Natalia Shakova East Timor Ecocide El Nino Endangered Dolphins Eric Draitser Extinction Radio Feedback loops First Blue-Ocean Event in Arctic Forestry Fort McMurray Fukushima Daiichi Gaia Gene Gibson Geneva Conventions George Perkins Marsh Going Dark Great Barrier Reef Green Movement Guests Gulf Steam Gulf Stream System Habitat Habitat Wars Harold H. Hensel Heatwave Mass Casualties Imperialism India Interviews Invitations IPCC IRA Ireland Irish Freedom Movement Isis Jack Williams Jason Box Jennifer Hynes John McMurtry John Pilger John Schramski Karl Marx Katharine Hayhoe Kevin's New Webpage Kevin Trenberth Larissa Waters Limits to Growth Livestream Malcolm Light Mangroves Mark Eakin Mass Marine Death Max Wilbert Mean Air Tempature Michael C. Ruppert Michael E Mann Mid-East Middle East Mike Sliwa Monarch Butterflies Most Abnormally Warm Month Recorded. Nafeez Ahmed Naomi Klein Nature Bats Last Nelson Mandela New Webpage New Zealand North Africa November Speaking Tour with Guy McPherson Novosibirsk Reservoir Nuclear Nuclear War Overdevelopment-Overpopulation-Overshoot P.M. Kohn Key-Eco Terrorist Palaeocene-Eocene Thermal Maximum--PETM Patsy O'Hara Paul Beckwith Paul Craig Roberts Pauline Panagiotou Schneider Paul Street Perfect Storm permafrost Peter Sinclair Phytoplankton PM John Key Podcast Pollution PRN Professor Paul Beckwith Prof Guy McPhersons Abrupt Climate Change Tour NZ 2016 Psychopathic Records of Air Tempatures Relief Analysis Richar Vivers RobertScribbler Robin Westenra Runaway Abrupt Climate Change Runaway Global Warming Russia Sam Carana SeeMoreRocks Blog Siberia-Yamal-Taimyr Sinn Fein South African Communist Party South Florida Corals Storms of Our Grandchildren-James E Hansen Subsea Methane Sustainability Syria Syrian Conflict Temperature Anomalies TEPCO The Collapse of Industrial Civilisation The Pain You Feel Thom Hartmann Tipping Points Tour NZ 2016 Transport Truthout Umkhonto we Sizwe United Nations Updates US Presidential Elections War Crimes Warmest February on Record Warmest Russian Winter Warnings Water Vapor Weather Channel wet-bulb temperature World War
Social
%d bloggers like this: