A Direct Measurement of the Terrestrial Mass Accretion Rate of Cosmic Dust

Details A Direct Measurement of the Terrestrial Mass Accretion Rate of Cosmic Dust A Direct Measurement of the Terrestrial Mass Accretion Rate of Cosmic Dust

Oct 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993sci...262..550l&link_type=abstract

Science, Volume 262, Issue 5133, pp. 550-553

Computer Science

309

Scientific paper

The mass of extraterrestrial material accreted by the Earth as submillimeter particles has not previously been measured with a single direct and precise technique that samples the particle sizes representing most of that mass. The flux of meteoroids in the mass range 10-9 to 10-4 grams has now been determined from an examination of hypervelocity impact craters on the space-facing end of the Long Duration Exposure Facility satellite. The meteoroid mass distribution peaks near 1.5 x 10-5 grams (200 micrometers in diameter), and the small particle mass accretion rate is (40 ± 20) x 10^6 kilograms per year, higher than previous estimates but in good agreement with total terrestrial mass accretion rates found by geochemical methods. This mass input is comparable with or greater than the average contribution from extraterrestrial bodies in the 1-centimeter to 10-kilometer size range.

Affiliated with

Also associated with

No associations

Rating

A Direct Measurement of the Terrestrial Mass Accretion Rate of Cosmic Dust does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A Direct Measurement of the Terrestrial Mass Accretion Rate of Cosmic Dust, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Direct Measurement of the Terrestrial Mass Accretion Rate of Cosmic Dust will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1330257