کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9522335 1634964 2005 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On the fluxes and fates of 3He accreted by the Earth with extraterrestrial particles
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علوم زمین و سیاره ای (عمومی)
پیش نمایش صفحه اول مقاله
On the fluxes and fates of 3He accreted by the Earth with extraterrestrial particles
چکیده انگلیسی
One observes appreciable concentrations of 3He in marine sediments. Extensive observational data are available for sediments in the Atlantic and Pacific oceans. We show that besides IDPs, there is an important source which is an important contributor to the flux of 3He in marine sediments. This is the GCR produced 3He in meteoroids of sizes up to ∼1 m. We compare the measured 3He fluxes in marine sediments with those predicted from solar 3He in IDPs, and from GCR produced 3He in secondary fragments of meteoroids of sizes up to ∼1 m, produced during their transit through the atmosphere. Our studies allow us to reach plausible conclusions regarding the predominant source of 3He in marine sediments.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Earth and Planetary Science Letters - Volume 235, Issues 1–2, 30 June 2005, Pages 375-390
نویسندگان
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