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COMET scientists analyse Calbuco eruption

On 22nd April Calbuco volcano, Chile, erupted for the first time since 1972 with very little warning. Plumes of volcanic ash reached heights of 16 km on the 22nd and up to 17 km in a second, longer eruption that began in the early hours of 23rd April.

Several thousand people were evacuated from villages closest to Calbuco , and ash fell over an area extending from the west coast of Chile to the east coast of Argentina, and grounded air traffic in Chile, Uruguay and Argentina.

COMET scientists have been using satellite data to analyse the event, in terms of both the emissions and changes to the shape of the volcano itself.  You can read more about the event here.

Figure 4. Data, spherical source elastic half space model and residuals for recent deformation at Calbuco [Bagnardi].
Data, spherical source elastic half space model and residuals for recent deformation at Calbuco [Bagnardi].

 

COMET Director receives Rosentiel Award

COMET Director Tim Wright has been selected as the 2015 Rosentiel Award Recipient by the University of Miami (UM) in recognition of his research into deformation of the Earth’s crust in response to tectonic forces.

The Rosenstiel Award honours scientists who, in the past decade, have made significant and growing impacts in their field.  Tim’s major achievements include the discovery of a continental rifting event in Ethiopia’s Afar region, one of the few places on Earth where a mid-ocean ridge comes ashore.

He was also one of the first scientists to measure how plate boundary zones deform, solely relying on satellite observations using a technique called satellite radar interferometry.

Tim presented the 2015 Rosenstiel Award Lecture, “Witnessing the Birth of Africa’s New Ocean” at the UM Rosenstiel School auditorium on Friday 3 April.

You can read more here.

COMET wins Geol Soc 2015 awards

Two COMET scientists are to receive prestigious awards from the Geological Society of London.

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The Society, which has been recognising significant achievements in the Earth sciences since 1831, will be presenting its Wollaston Medal (its highest award, for impacts on pure or applied geology) to COMET’s James Jackson, Professor of Active Tectonics at the University of Cambridge.

Professor Jackson’s work includes research into active tectonics in New Zealand, Iran, Turkey, Greece and Tibet, where he has made vital contributions to understanding the evolution and deformation of the continents, from individual faults to mountain belts.

Professor Geoff Wadge of the University of Reading will meanwhile receive the Murchison Medal, awarded to geologists who have contributed significantly to ‘hard’ rock studies.   Professor Wadge is being recognised for his contributions to geology and remote sensing, including research into volcanology, Caribbean tectonics, and volcanic hazards and risk assessment. The awards will be presented by Geological Society President Professor David Manning at President’s Day on 3 June 2015.

 

Tectonics from above: recent advances in the use of high-resolution topography and imagery

RAS Specialist Discussion Meeting: Royal Astronomical Society, Burlington House, Piccadilly, London
13th March 2015 | Download the programme |

**Specialist Discussion Meeting open to all**

Organisers: Richard Walker (University of Oxford), James Hollingsworth (Arup), Ed Nissen (Colorado School of Mines) and Barry Parsons (University of Oxford)

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Topography is one of the most important geophysical observations that can be made at the Earth’s surface. Recent advances in topographic measurements have significantly improved the spatial resolutions available to earth scientists. Combining new high-resolution topography with high-resolution imagery allows Earth’s surface to be explored in a virtual environment, and comparison of pre- and post-event datasets allows the retrieval of 3D earthquake deformation fields.

The meeting aims to expose to a wider audience the new data sets and methods of analysis for measuring continental topography and surface displacements, and provide a forum for discussion of new tectonic applications of high-resolution topography and imagery.

 

Earthquake monitoring gets boost from new satellite

Europe’s Sentinel-1A spacecraft and its extraordinary images of slip from the South Napa earthquake herald a new era of space-based surveillance of faults.

JE Napa

On 24 August 2014, the San Francisco Bay area shook in an Mw = 6.0 earthquake, the region’s largest in 25 years. The tremors injured roughly 200 people, killed 1 person, and damaged buildings near the quake’s epicenter in the southern reaches of California’s Napa Valley. It also set off a scientific scramble to measure the fault’s movement and marked the dawn of a new age of earthquake satellite monitoring thanks to a recently launched spacecraft: the European Space Agency’s Sentinel-1A satellite.

COMET scientists explain why in an article published in EOS, the Earth and space science journal of the American Geophysical Union.

You can read more here, and download the PDF here.

Austin Elliott joins COMET from UC Davis

A warm welcome to Austin Elliott who has just arrived in Oxford to take up a postdoctoral position in remote sensing and field investigations of active faulting and past earthquakes with Dr Richard Walker & Prof Barry Parsons.  Austin is well known for his AGU blog Trembling Earth in which he covers the latest earthquakes. He was previously a PhD student at UC Davis in <a href="http://geology.ucdavis ou acheter viagra sans ordonnance.edu/research/research_groups/strutec.php”>Earth & Planetary Sciences.