Re: Correct text. The previous is to large -- English Morphology Online Seminars

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Subject: Re: Correct text. The previous is to large

Author:
Priscilla Rabelo

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Date Posted: 12:36:47 09/30/09 Wed
In reply to: Henrique Akaki 's message, "Correct text. The previous is to large" on 19:41:15 09/29/09 Tue

Hi Henrique,

I can analyse your text.

Regards,
Priscilla Rabelo.

>>Here there is the correct text for analysis. The
>Previous text I posted is incorrect because it is too
>large:
>
>>Scientists find new reserves of water on Mars
>
>The Moon is not the only body in the solar system that
>is wetter than we thought: scientists have also
>discovered this week that Mars has much more water
>beneath its surface than was previously known.
>Observations of five new Martian craters carved by
>meteorites have revealed large quantities of water
>ice, exposed when soil and rock were blown away by the
>impacts.
>While underground Martian ice has been detected
>before, the new craters where the latest deposits have
>been found lie roughly midway between the planet’s
>north pole and its equator, at easily the lowest
>latitude where it has so far been discovered.
>This suggests that the ice sheet beneath the Martian
>surface may be much more extensive than had been
>suspected. The ice in the craters also appears to be
>very pure, containing 99 per cent water.
>The discoveries, published in the journal Science,
>come from an instrument called the the High Resolution
>Imaging Science Experiment (HiRISE), which is fitted
>to Nasa’s Mars Reconnaissance Orbiter (MRO). Research
>showing that the Moon holds small amounts of water at
>the surface was also published this week by the same
>journal.
>Shane Byrne, of the University of Arizona, a member of
>the HiRISE team, said of the Mars findings: “This ice
>is a relic of a more humid climate from perhaps just
>several thousand years ago. We knew there was ice
>below the surface at high latitudes of Mars, but we
>find that it extends far closer to the equator than
>you would think, based on Mars’s climate today.
>“The other surprising discovery is that ice exposed at
>the bottom of these meteorite impact craters is so
>pure. The thinking before was that ice accumulates
>below the surface between soil grains, so there would
>be a 50-50 mix of dirt and ice. We were able to figure
>out, given how long it took that ice to fade from
>view, that the mixture is 1 per cent dirt and 99 per
>cent ice.” The new craters were detected on August 10
>last year, and studied in detail with the HiRISE
>instrument a month later. “We saw something very
>unusual ... this bright blue material poking up from
>the bottom of the crater,” Dr Byrne said. “It looked a
>lot like water ice. It faded away like you’d expect
>water ice to fade, because water ice is unstable on
>Mars’s surface and turns into water vapour in the
>atmosphere.”
>A few days later the Compact Reconnaissance Imaging
>Spectrometer for Mars picked up the chemical signature
>of water ice. “All of this had to happen very quickly
>because 200 days after we first saw the ice, it was
>gone — it was the colour of dirt,” Dr Byrne said. “If
>we had taken HiRISE images just a few months later, we
>wouldn’t have noticed anything unusual. This discovery
>would have passed us by.”
>
>Source: >href="http://www.timesonline.co.uk/tol/news/science/spa
>ce/article6849802.ece">http://www.timesonline.co.uk/tol
>/news/science/space/article6849802.ece
>September 26, 2009

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