Rosetta updates

Rosetta

A useful summary of the situation #Philae / #Rosetta is right to say, to avoid going to fish out all the previous messages.
The lander #Philae arrived successfully on the surface of the comet 67P yesterday. Has touched the ground three times, bouncing the first for nearly 1 Km in height, and the second for about 20 cm. We are far from the point of landing default (without the first bounce was centered with a difference of about 100 meters!) but still in a good area to carry out scientific studies.
However, #Philae is not firmly anchored to the surface as the two main hooks were not fired. The screws anchor the end of the tripod that supports it, however, are inserted (minimum 2/3) in soil comet, giving a minimum of stability.
The tools all function nominally, according to forecasts. The new landing site, however, shows less sunlight, and then will have to resort to a schedule to avoid complete discharge of the batteries before it come back again sunlight.
Now the priority is to find the exact location of the lander, and this will be done by the high-resolution images of #Rosetta which could come as early as today or tomorrow. “First comet drilling is a fact!” ESA posted on Twitter Friday night. Italian drill is working.
http://www.theguardian.com/science/2014/nov/14/philae-comet-lander-drills-hammers-rosetta
Tools’ action will cause an opposite reaction in Rosetta’s Philae lander, perhaps nudging it into a more sunlit position.

Lander rotates into slightly sunnier position but apparently too late to charge batteries and keep systems running. Now is sleeping on the comet.
BERLIN, Germany (AP) —‚ The pioneering lander Philae completed its primary mission of exploring the comet’s surface and returned plenty of data before depleted batteries forced it to go silent, the European Space Agency (ESA) said yesterday.

“All of our instruments could be operated and now it’s time to see what we got,” ESA’s blog quoted lander manager Stephan Ulamec as saying.

Since landing Wednesday on comet 67P/Churyumov-Gerasimenko some 311 million miles (500 million kilometres) away, the lander has performed a series of scientific tests and sent reams of data, including photos, back to Earth. The science teams are now studying their data to see if they have sampled any of this material with Philae’s drill.

Data collected by Philae’s SESAME experiment suite support MUPUS results indicating the comet’s unexpected toughness. Early findings also show a low level of cometary activity at the probe’s landing site and a large amount of water ice under the lander, according to DLR.
“The strength of the ice founds under a layer of dust on the first landing site is surprisingly high,” said Klaus Seidensticker from the DLR Institute of Planetary Research, lead scientist on the SESAME instrument package, which was expected to study the comet’s composition and electrical, structural and mechanical characteristics.

While officials said Monday it was clear the drill worked, they could not say whether it gathered samples and deposited them in the lander’s instruments.
One of Philae’s sample analysis sensors — named COSAC — did collect data in “sniff” mode and detected organic molecules, presumably outgassing just above the comet’s surface.

SD2 principal investigator Amalia Finzi has reported that the drill was deployed as planned, extending 46.9 cm below the balcony of the lander and 56.0 cm from its reference point.

Although the ovens worked correctly, the scientists do not yet know how much – if any – material was actually delivered to the ovens by SD2, or whether the instruments sampled dust or gas that entered the chamber during the touchdown.
Because Philae was not anchored to the comet surface, it is also possible that, if the drill touched a particularly hard surface material, it moved the lander instead of drilling into the surface. Furthermore, the SD2 instrument lacks dedicated sensors to determine whether or not the surface has been reached, whether a sample was then collected in the sample tube, or if it was then discharged into the oven.

The lander also drilled into the comet’s surface in its hunt for organic molecules, but the latest results indicate that no soil was collected from the surface. So we only have data from what COSAC sniffed.

Read more: http://www.businessinsider.com/scientists-discover-life-forming-organic-molecules-on-a-comet-2014-11

 

This concludes the update today.

http://www.jamaicaobserver.com/News/Space-agency-says-Philae-completes-primary-mission_17953893

http://www.meteoweb.eu/2014/11/la-sonda-rosetta-atterra-sulla-sua-cometa-le-immagini-in-diretta-streaming-video-live/348871/


https://www.facebook.com/AstroPratica/photos/a.1513091222264504.1073741828.1511104912463135/1523865781187048/?type=1

14 June 2015
Lander Philae wakes up from hibernation
The first signals were received at ESA’s European Space Operations Centre in Darmstadt at 22:28 on 13 June.
Philae has an operating temperature of -35ºC and has 24 Watts available.
The scientists are waiting for more than 8000 data packets stored in Philae’s mass memory.

http://blogs.channel4.com/tom-clarke-on-science/philaes-long-sleep-planned/1862

Annunci

Sinabung, Vesuvius, Bardarbunga: the risks


Why in Europe and all over the word, we have to prepare us to face a volcanic crisis?

Activity has picked up considerably at the volcano during the past days. Several pyroclastic flows (dangerous hot avalanches of fragmented lava and hot gasses) traveled down the SE (and some on the NE) flanks of the volcano, threatening again the closest inhabited areas to the S of Sinabung.

Sinabung eruption:
http://www.volcanodiscovery.com/sinabung/news.html

But the greatest risk for Europe comes form Vesuvius.

Vesuvius is one of the most dangerous volcanoes in the world — but scientists and the civil authorities can’t agree on how to prepare for a future eruption. “There would be no modern precedent for an evacuation of this magnitude,” says Giuseppe Mastrolorenzo at the Vesuvius Volcano Observatory in Naples. “This is why Vesuvius is the most dangerous volcano in the world.”
Vesuvius risks:
http://www.nature.com/news/2011/110511/full/473140a.html


Volcano‬ Bardarbunga‬: possible evolution scenarios, webcam live streaming.

Drone video:
http://www.mbl.is/frettir/english/2014/10/01/drone_close_up_of_the_eruption/
http://www.ruv.is/frett/another-eruption-if-the-current-one-stops

http://www.volcanodiscovery.com/bardarbunga/news/47903/Bardarbunga-volcano-update-Holuhraun-eruption-and-subsidence-of-Bardarbunga-caldera-continue.html

Professor Magnús Tumi Guðmundsson, professor of geophysics at the University of Iceland´s Institute of Earth Sciences and the foremost Icelandic expert on subglacial eruptions outlines the three following scenarios:

1) The eruption at Holuhraun stops and with it the depletion of the magma reservoir of the Bardarbunga system also stops.
2) The eruption at Holuhraun continues as does the depletion with an accompanying subsidence at the Bardarbunga caldera. (As this goes on, the risk of possibility #3 increases, our note).
3) The deflation reaches a critical point where part of the roof of the Bardarbunga caldera collapses which allows water, liquid or in the form of ice, to interact directly with the magmatic main body. (This will lead to a series of very violent explosions which will only stop when either the body of water/ice or the body of magma are exhausted, our note).

http://volcanocafe.wordpress.com/2014/09/10/bardarbunga-holuhraun-update-140910/

http://www.youreporter.it/video_Impressionante_intensificazione_eruzione_nord_Bardarbunga

Volcano Bardarbunga: streaming.

http://www.livefromiceland.is/webcams/bardarbunga-2/

Vulcano Bardarbunga, l’esperto: “il magma è risalito dal mantello”. Le immagini dallo spazio

http://www.meteoweb.eu/2014/09/vulcano-bardarbunga-lesperto-magma-risalito-dal-mantello-immagini-dallo-spazio/319703/

http://volcanocafe.wordpress.com/info-on-bardarbunga/

Poco dopo la mezzanotte di venerdì 29/08/2014 è iniziata una piccola eruzione con emissione di lava e fumo da fratture in prossimità del vulcano.

Il traffico aereo al momento non ha subito ritardi, anche se l’allarme è tornato al livello rosso. Nei prossimi giorni ci si può aspettare un peggioramento a causa dei venti che potrebbero spingere la nube di ceneri verso sud, sull’oceano atlantico.

A livello locale il maggior rischio è costituito dai ghiacci che ricoprono il vulcano che potrebbero sciogliersi a causa dell’eruzione provocando allagamenti.
http://www.businessinsider.com/icelandic-bardarbunga-volcano-erupts-2014-8

Nel caso si verificasse lo scenario N° 3. Il problema è serio anche per quanto riguarda il clima, se la quantità di ceneri immesse in atmosfera fosse davvero abbondante, potrebbe influenzare il clima di tutta l’Europa provocando una piccola era glaciale nei prossimi anni. I danni economici, soprattutto per l’agricoltura sarebbero enormi.

Laki caused 1783 – could Iceland’s Bardarbunga Volcano trigger another ‘Year Without a Summer’?


Volcano‬ Bardarbunga‬: possible evolution scenarios, webcam live streaming.

Drone video:
http://www.mbl.is/frettir/english/2014/10/01/drone_close_up_of_the_eruption/
http://www.ruv.is/frett/another-eruption-if-the-current-one-stops

http://www.volcanodiscovery.com/bardarbunga/news/47903/Bardarbunga-volcano-update-Holuhraun-eruption-and-subsidence-of-Bardarbunga-caldera-continue.html

Professor Magnús Tumi Guðmundsson, professor of geophysics at the University of Iceland´s Institute of Earth Sciences and the foremost Icelandic expert on subglacial eruptions outlines the three following scenarios:

1) The eruption at Holuhraun stops and with it the depletion of the magma reservoir of the Bardarbunga system also stops.
2) The eruption at Holuhraun continues as does the depletion with an accompanying subsidence at the Bardarbunga caldera. (As this goes on, the risk of possibility #3 increases, our note).
3) The deflation reaches a critical point where part of the roof of the Bardarbunga caldera collapses which allows water, liquid or in the form of ice, to interact directly with the magmatic main body. (This will lead to a series of very violent explosions which will only stop when either the body of water/ice or the body of magma are exhausted, our note).

http://volcanocafe.wordpress.com/2014/09/10/bardarbunga-holuhraun-update-140910/

http://www.youreporter.it/video_Impressionante_intensificazione_eruzione_nord_Bardarbunga

Volcano Bardarbunga: streaming.

http://www.livefromiceland.is/webcams/bardarbunga-2/

Vulcano Bardarbunga, l’esperto: “il magma è risalito dal mantello”. Le immagini dallo spazio

http://www.meteoweb.eu/2014/09/vulcano-bardarbunga-lesperto-magma-risalito-dal-mantello-immagini-dallo-spazio/319703/


http://volcanocafe.wordpress.com/info-on-bardarbunga/

Poco dopo la mezzanotte di venerdì 29/08/2014 è iniziata una piccola eruzione con emissione di lava e fumo da fratture in prossimità del vulcano.

Il traffico aereo al momento non ha subito ritardi, anche se l’allarme è tornato al livello rosso. Nei prossimi giorni ci si può aspettare un peggioramento a causa dei venti che potrebbero spingere la nube di ceneri verso sud, sull’oceano atlantico.

A livello locale il maggior rischio è costituito dai ghiacci che ricoprono il vulcano che potrebbero sciogliersi a causa dell’eruzione provocando allagamenti.

http://www.businessinsider.com/icelandic-bardarbunga-volcano-erupts-2014-8

Nel caso si verificasse lo scenario N° 3. Il problema è serio anche per quanto riguarda il clima, se la quantità di ceneri immesse in atmosfera fosse davvero abbondante, potrebbe influenzare il clima di tutta l’Europa provocando una piccola era glaciale nei prossimi anni. I danni economici, soprattutto per l’agricoltura sarebbero enormi.

Watts Up With That?

Eric Worrall writes: The British and Icelandic MET offices are expressing concern about the possible effect on the climate, of a potentially enormous volcanic eruption in Iceland.

Iceland-Bardarbunga-VolcanoAccording to The Express, a UK daily newspaper;

“BRITAIN could freeze in YEARS of super-cold winters and miserable summers if the  erupts, experts have warned.

Britain could face a freezing winter if the Icelandic volcano erupts Britain could face a freezing winter if the Icelandic volcano erupts.
Depending on the force of the explosion, minute particles thrust beyond the earth’s atmosphere can trigger DECADES of chaotic weather patterns.

The first effect could be a bitterly cold winter to arrive in weeks with thermometers plunging into minus figures and not rising long before next summer.

The Icelandic Met Office has this week warned of “strong indications of ongoing magma movement” around the volcano prompting them to raise the aviation warning to orange, the…

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