SNOW COVER OF THE CENTRAL ANTARCTICA (VOSTOK STATION) AS AN IDEAL NATURAL TABLET FOR COSMIC DUST COLLECTION: PRELIMINARY RESULTS ON THE IDENTIFICATION OF MICROMETEORITES OF CARBONACEOUS CHONDRITE TYPE

During the 2010/11 season nearby the Vostok station the 56th Russian Antarctic Expedition has collected surface snow in a big amount from a 3 m deep pit using 15 220 L vol. containers (about 70 kg snow each). Snow melting and processing by ultra-centrifugation was performed in a clean (class 10 000...

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Published in:Ice and Snow
Main Authors: E. Bulat S., V. Celmovich A., J.-R. Petit, I. Gindilis M., S. Bulat A., Е. Булат С., В. Цельмович А., Ж-Р. Пети, Л. Гиндилис М., С. Булат А.
Format: Article in Journal/Newspaper
Language:Russian
Published: IGRAS 2015
Subjects:
Antarctica
astrobiology
cosmic dust
ice
interplanetary dust particles
micrometeorites
snow
Vostok station
Антарктида
астробиология
космическая пыль
лёд
межпланетная пыль
микрометеориты
снег
станция Восток
Antarctic
East Antarctica
Vostok Station
Annals of Glaciology
Antarc*
Ice Sheet
Online Access:https://ice-snow.igras.ru/jour/article/view/218
https://doi.org/10.15356/2076-6734-2012-4-146-152
id ftjias:oai:oai.ice.elpub.ru:article/218
record_format openpolar
institution Open Polar
collection Ice and Snow (E-Journal)
op_collection_id ftjias
language Russian
topic Antarctica
astrobiology
cosmic dust
ice
interplanetary dust particles
micrometeorites
snow
Vostok station
Антарктида
астробиология
космическая пыль
лёд
межпланетная пыль
микрометеориты
снег
станция Восток
spellingShingle Antarctica
astrobiology
cosmic dust
ice
interplanetary dust particles
micrometeorites
snow
Vostok station
Антарктида
астробиология
космическая пыль
лёд
межпланетная пыль
микрометеориты
снег
станция Восток
E. Bulat S.
V. Celmovich A.
J.-R. Petit
I. Gindilis M.
S. Bulat A.
Е. Булат С.
В. Цельмович А.
Ж-Р. Пети
Л. Гиндилис М.
С. Булат А.
SNOW COVER OF THE CENTRAL ANTARCTICA (VOSTOK STATION) AS AN IDEAL NATURAL TABLET FOR COSMIC DUST COLLECTION: PRELIMINARY RESULTS ON THE IDENTIFICATION OF MICROMETEORITES OF CARBONACEOUS CHONDRITE TYPE
topic_facet Antarctica
astrobiology
cosmic dust
ice
interplanetary dust particles
micrometeorites
snow
Vostok station
Антарктида
астробиология
космическая пыль
лёд
межпланетная пыль
микрометеориты
снег
станция Восток
description During the 2010/11 season nearby the Vostok station the 56th Russian Antarctic Expedition has collected surface snow in a big amount from a 3 m deep pit using 15 220 L vol. containers (about 70 kg snow each). Snow melting and processing by ultra-centrifugation was performed in a clean (class 10 000 and 100) laboratory. Total dust concentrations were not exceeded 37.4 mkg per liter with particle dispersal mode around 2.5 mkm. To analyze the elemental composition of fine dust particles aimed to reveal Antarctic micrometeorites (AMM) two electron microscopy devices equipped with different micro-beams were implemented. As a preliminary result, three particles (of 107 analyzed) featured by Mg content clearly dominated over Al along with Si and Fe as major elements (a feature of carbonaceous chondrites) were observed. By this the Vostok AMM CS11 collection was established. The occurrence of given particles was averaged 2.8% – the factual value obtained for the first time for chondritic type AMM at Vostok which should be considered as the lowest estimate for all other families of AMM. Given the reference profile of total dust content in East Antarctic snow during Holocene (18 mkg/kg) the MM deposition in Antarctica was quantified for the first time – 14 tons per day for carbonaceous chondrites for the Vostok AMM CS11 collection and up to 245 tons per day for all MM types for the Concordia AMM DC02 collection. The results obtained allowed to prove that snow cover (ice sheet in total) of Central East Antarctica is the best spot (most clean of other natural locations and always below 0 ºC) for collecting native MM deposited on the Earth during the last million years and could be useful in deciphering the origin and evolution of solid matter in our Solar System and its effects on Earth-bound biogeochemical and geophysical processes including the life origin. The farther analyses of the Vostok AMMs are in a progress. В 2010/11 г. сотрудниками 56-й Российской антарктической экспедиции в районе станции Восток был отобран ...
format Article in Journal/Newspaper
author E. Bulat S.
V. Celmovich A.
J.-R. Petit
I. Gindilis M.
S. Bulat A.
Е. Булат С.
В. Цельмович А.
Ж-Р. Пети
Л. Гиндилис М.
С. Булат А.
author_facet E. Bulat S.
V. Celmovich A.
J.-R. Petit
I. Gindilis M.
S. Bulat A.
Е. Булат С.
В. Цельмович А.
Ж-Р. Пети
Л. Гиндилис М.
С. Булат А.
author_sort E. Bulat S.
title SNOW COVER OF THE CENTRAL ANTARCTICA (VOSTOK STATION) AS AN IDEAL NATURAL TABLET FOR COSMIC DUST COLLECTION: PRELIMINARY RESULTS ON THE IDENTIFICATION OF MICROMETEORITES OF CARBONACEOUS CHONDRITE TYPE
title_short SNOW COVER OF THE CENTRAL ANTARCTICA (VOSTOK STATION) AS AN IDEAL NATURAL TABLET FOR COSMIC DUST COLLECTION: PRELIMINARY RESULTS ON THE IDENTIFICATION OF MICROMETEORITES OF CARBONACEOUS CHONDRITE TYPE
title_full SNOW COVER OF THE CENTRAL ANTARCTICA (VOSTOK STATION) AS AN IDEAL NATURAL TABLET FOR COSMIC DUST COLLECTION: PRELIMINARY RESULTS ON THE IDENTIFICATION OF MICROMETEORITES OF CARBONACEOUS CHONDRITE TYPE
title_fullStr SNOW COVER OF THE CENTRAL ANTARCTICA (VOSTOK STATION) AS AN IDEAL NATURAL TABLET FOR COSMIC DUST COLLECTION: PRELIMINARY RESULTS ON THE IDENTIFICATION OF MICROMETEORITES OF CARBONACEOUS CHONDRITE TYPE
title_full_unstemmed SNOW COVER OF THE CENTRAL ANTARCTICA (VOSTOK STATION) AS AN IDEAL NATURAL TABLET FOR COSMIC DUST COLLECTION: PRELIMINARY RESULTS ON THE IDENTIFICATION OF MICROMETEORITES OF CARBONACEOUS CHONDRITE TYPE
title_sort snow cover of the central antarctica (vostok station) as an ideal natural tablet for cosmic dust collection: preliminary results on the identification of micrometeorites of carbonaceous chondrite type
publisher IGRAS
publishDate 2015
url https://ice-snow.igras.ru/jour/article/view/218
https://doi.org/10.15356/2076-6734-2012-4-146-152
long_lat ENVELOPE(106.837,106.837,-78.464,-78.464)
geographic Antarctic
East Antarctica
Vostok Station
geographic_facet Antarctic
East Antarctica
Vostok Station
genre Annals of Glaciology
Antarc*
Antarctic
Antarctica
East Antarctica
Ice Sheet
Антарктида
genre_facet Annals of Glaciology
Antarc*
Antarctic
Antarctica
East Antarctica
Ice Sheet
Антарктида
op_source Ice and Snow; Том 52, № 4 (2012); 146-152
Лёд и Снег; Том 52, № 4 (2012); 146-152
2412-3765
2076-6734
10.15356/2076-6734-2012-4
op_relation Astafieva M.M., Gerasimenko L.M., Geptner A.R., Zhegallo E.A., Zhmur S.I., Karpov G.A., Orleansky V.K., Ponomarenko A.G., Rozanov A.Yu., Sumina E.L., Ushatinskaya G.T., Khuver R., Shkol’nik E.L. Iskopaemye bakterii i drugie mikroorganizmy v zemnykh porodakh i astromaterialakh. Fossil bacteria and other microorganisms in the rocks and astronomical materials. Moscow: Paleontological Institute of RAS, 2011: 172 p. [In Russian].
Afanasiev V.L., Kalenichenko V.V., Karachentsev I.D. Discovery of intergalactic meteoric particle at the sixth telescope. Astrophifizicheskiy byulleten’. Astrophysical bulletin. 2007, 62 (4): 319–328. [In Russian].
Barkov N.I., Lipenkov V.Ya. Snow accumulation in the region of Vostok station, Antarctica, in 1970–1992. Materialy Glyatsiologicheskikh Issledovaniy. Data of Glaciological Studies. 1996, 80: 87–88. [In Russian].
Vilenskiy V.D. Spherical micro particles in the Antarctic Ice Sheet. Meteoritica. Meteoritics. 1972, 31: 57–61. [In Russian].
Grachev A.F., Korchagin O.A., Celmovich V.A., Kollmann X.A. Cosmic dust and micro meteorites in the transmission layer of clay at the border of Cretaceous and Palaeogene in the cross-section Gams (Eastern Alps): morphology and chemical composition. Fizika Zemli. Earth Physics. 2008, 7: 42–57. [In Russian].
Grinberg J.M. Interstellar dust. Structure and evolution. V mire nauki. In the scientific world. 1984, 8: 66–77. [In Russian].
Rozanov A.Yu. Pseudomorphoses at the microbes in meteorites. Problemy proiskhozhdeniya zhizni. Problems of the life origin. Moscow: Paleontological Institute of RAS, 2009: 158–165. [In Russian].
Celmovich V.A. New and perspective possibilities of micro sounding analysis in the Geophysical Observatory “Borok”. Vestnik ONZ RAN. Herald of the Earth Sciences Branch, Russian Academy of Sciences. 2010, 2. NZ6030. [In Russian].
Belbruno E., Moro-Martín A., Malhotra R., Savransky D. Chaotic exchange of solid material between planetary systems: implications for lithopanspermia. EPSC abstracts. 2012, 7: EPSC2012–139.
Bennett V.C. Probing the Mantle Past. Science. 2012, 335: 1051–1052.
Bradley J.P. Chemically anomalous, preaccretionally irradiated grains in interplanetary dust from comets. Science. 1994, 265: 925–929.
Britt D.T., Consolmagno G.J. Meteorite porosities and densities: a review of trends in the data. Lunar and Planetary Science. 2004, XXXV: 2108.
Delmonte B., Petit J.R., Andersen K.K., Basile-Doelsch I., Maggi V., Lipenkov V.Ya. Dust size evidence for opposite regional atmospheric circulation changes over east Antarctica during the last climatic transition. Climate Dynamics. 2004, 23: 427–438.
Dobrica E., Engrand C., Leroux H., Rouzaud J.-N., Duprat J. Transmission Electron Microscopy of CONCORDIA UltraCarbonaceous Antarctic MicroMeteorites (UCAMMs): Mineralogical properties. Geochimica et Cosmochimica Acta. 2012, 76: 68–82.
Dunlop J.S. The Cosmic History of Star Formation. Science. 2011, 333: 178–181.
Duprat J., Engrand C., Maurette M., Kurat G., Gounelle M., Hammer C. Micrometeorites from Central Antarctic snow: The Concordia collection. Advances in Space Research. 2007, 39: 605–611.
Ekaykin A.A., Lipenkov V.Ya., Kuzmina I.N., Petit J.R., Masson-Delmotte V., Johnsen S.J. The changes in isotope composition and accumulation of snow at Vostok station, East Antarctica, over the past 200 years. Annals of Glaciology. 2004, 39 (1): 569–575.
Fortman S.M., McMillan J.P., Neese C.F., Randall S.K., Remijan A.J., Wilson T.L., De Lucia F.C. An analysis of a preliminary ALMA Orion KL spectrum via the use of complete experimental spectra from the laboratory. Journ. of Molecular Spectroscopy. 2012. http://dx.doi.org/10.1016/j.jms.2012.08.002
Genge M.J., Engrand C., Gounelle M., Taylor S. The classification of micrometeorites. Meteoritics and Planetary Science. 2008, 43 (3): 497–515.
Genge M.J., Grady M.M., Hutchison R. The textures and compositions of fine-grained Antarctic micrometeorites – Implications for comparisons with meteorites. Geochimica et Cosmochimica Acta. 1997, 61: 5149–5162.
Grün E., Gustafson B.A.S., Dermott S.F., Fechtig H. (Eds.). Interplanetary Dust. Berlin: Springer. 2001: 804 p.
Harrison T.M., Blichert-Toft J., Müller W., Albarede F., Holden P., Mojzsis S.J. Heterogeneous Hadean Hafnium: Evidence of Continental Crust at 4.4 to 4.5 Ga. Science. 2005, 310: 1947–1950.
Hezel D.C., Russell S.S., Ross A.J., Kearsley A.T. Modal abundances of CAIs: Implications for bulk chondrite element abundances and fractionations. Meteoritics et Planetary Science. 2008, 43: 1879–1894.
Kalirai J.S. The age of the Milky Way inner halo. Nature. 2012, 486: 90–92.
Kurat G., Koeberl C., Presper T., Franz B., Maurette M. Petrology and geochemistry of Antarctic micrometeorites. Geochimica et Cosmochimica Acta. 1994, 58: 3879–3904.
Kwok S., Zhang Y. Mixed aromatic–aliphatic organic nanoparticles as carriers of unidentified infrared emission features. Nature. 2011, 479: 80–83.
Lanci L., Kent D.V., Biscaye P.E. Meteoric smoke concentration in the Vostok ice core estimated from superparamagnetic relaxation and some consequences for estimates of Earth accretion rate. Geophys. Research Letters. 2007, 34. L10803.
Mumma M.J., Dello Russo N., Di Santi M.A., Magee-Sauer K., Novak R.E., Brittain S., Rettig T., McLean I.S., Reuter D.C., Xu Li-H. Organic Composition of C/1999 S4 (LINEAR): A Comet Formed Near Jupiter? Science. 2001, 292: 1334–1339.
Plane J.M.C. Cosmic dust in the earth’s atmosphere. Chemical Society Reviews. 2012. DOI:10.1039/c2cs35132c.
Seife C. Illuminating the Dark Universe. Science. 2003, 302: 2038–2039.
Stark D. Searching for the cosmic dawn. Nature. 2012, 489: 370–371.
Whipple F.L. The theory of micrometeorites. Part II. In heterothermal atmospheres. Proc. of the National Academy of Sciences. 1951, 37: 19–30.
Zheng W., Postman M., Zitrin A., Moustakas J., Shu X., Jouvel S., Høst O., Molino A., Bradley L., Coe D., Moustakas L.A., Carrasco M., Ford H., Benitez N., Lauer T.R., Seitz S., Bouwens R., Koekemoer A., Medezinski E., Batelmann M., Broadhurst T., Donahue M., Grillo C., Infante L., Jha S.W., Kelson D.D., Lahav O., Lemze D., Melchior P., Meneghetti M., Merten J., Nonino M., Ogaz S., Rosati P., Umetru K., van der Wel A. A magnified young galaxy from about 500 million years after the Big Bang. Nature. 2012, 489: 406–408.
https://ice-snow.igras.ru/jour/article/view/218
doi:10.15356/2076-6734-2012-4-146-152
op_rights Authors who publish with this journal agree to the following terms:Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
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op_doi https://doi.org/10.15356/2076-6734-2012-4-146-152
https://doi.org/10.15356/2076-6734-2012-4
https://doi.org/10.1016/j.jms.2012.08.002
https://doi.org/10.1039/c2cs35132c
container_title Ice and Snow
container_volume 52
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spelling ftjias:oai:oai.ice.elpub.ru:article/218 2023-05-15T13:29:51+02:00 SNOW COVER OF THE CENTRAL ANTARCTICA (VOSTOK STATION) AS AN IDEAL NATURAL TABLET FOR COSMIC DUST COLLECTION: PRELIMINARY RESULTS ON THE IDENTIFICATION OF MICROMETEORITES OF CARBONACEOUS CHONDRITE TYPE СНЕЖНЫЙ ПОКРОВ ЦЕНТРАЛЬНОЙ АНТАРКТИДЫ (СТАНЦИЯ ВОСТОК) КАК ИДЕАЛЬНЫЙ ПРИРОДНЫЙ ПЛАНШЕТ ДЛЯ СБОРА КОСМИЧЕСКОЙ ПЫЛИ: ПРЕДВАРИТЕЛЬНЫЕ РЕЗУЛЬТАТЫ ПО ВЫЯВЛЕНИЕ МИКРОМЕТЕОРИТОВ ТИПА УГЛИСТЫХ ХОНДРИТОВ E. Bulat S. V. Celmovich A. J.-R. Petit I. Gindilis M. S. Bulat A. Е. Булат С. В. Цельмович А. Ж-Р. Пети Л. Гиндилис М. С. Булат А. 2015-11-14 https://ice-snow.igras.ru/jour/article/view/218 https://doi.org/10.15356/2076-6734-2012-4-146-152 ru rus IGRAS Astafieva M.M., Gerasimenko L.M., Geptner A.R., Zhegallo E.A., Zhmur S.I., Karpov G.A., Orleansky V.K., Ponomarenko A.G., Rozanov A.Yu., Sumina E.L., Ushatinskaya G.T., Khuver R., Shkol’nik E.L. Iskopaemye bakterii i drugie mikroorganizmy v zemnykh porodakh i astromaterialakh. Fossil bacteria and other microorganisms in the rocks and astronomical materials. Moscow: Paleontological Institute of RAS, 2011: 172 p. [In Russian]. Afanasiev V.L., Kalenichenko V.V., Karachentsev I.D. Discovery of intergalactic meteoric particle at the sixth telescope. Astrophifizicheskiy byulleten’. Astrophysical bulletin. 2007, 62 (4): 319–328. [In Russian]. Barkov N.I., Lipenkov V.Ya. Snow accumulation in the region of Vostok station, Antarctica, in 1970–1992. Materialy Glyatsiologicheskikh Issledovaniy. Data of Glaciological Studies. 1996, 80: 87–88. [In Russian]. Vilenskiy V.D. Spherical micro particles in the Antarctic Ice Sheet. Meteoritica. Meteoritics. 1972, 31: 57–61. [In Russian]. Grachev A.F., Korchagin O.A., Celmovich V.A., Kollmann X.A. Cosmic dust and micro meteorites in the transmission layer of clay at the border of Cretaceous and Palaeogene in the cross-section Gams (Eastern Alps): morphology and chemical composition. Fizika Zemli. Earth Physics. 2008, 7: 42–57. [In Russian]. Grinberg J.M. Interstellar dust. Structure and evolution. V mire nauki. In the scientific world. 1984, 8: 66–77. [In Russian]. Rozanov A.Yu. Pseudomorphoses at the microbes in meteorites. Problemy proiskhozhdeniya zhizni. Problems of the life origin. Moscow: Paleontological Institute of RAS, 2009: 158–165. [In Russian]. Celmovich V.A. New and perspective possibilities of micro sounding analysis in the Geophysical Observatory “Borok”. Vestnik ONZ RAN. Herald of the Earth Sciences Branch, Russian Academy of Sciences. 2010, 2. NZ6030. [In Russian]. Belbruno E., Moro-Martín A., Malhotra R., Savransky D. Chaotic exchange of solid material between planetary systems: implications for lithopanspermia. EPSC abstracts. 2012, 7: EPSC2012–139. Bennett V.C. Probing the Mantle Past. Science. 2012, 335: 1051–1052. Bradley J.P. Chemically anomalous, preaccretionally irradiated grains in interplanetary dust from comets. Science. 1994, 265: 925–929. Britt D.T., Consolmagno G.J. Meteorite porosities and densities: a review of trends in the data. Lunar and Planetary Science. 2004, XXXV: 2108. Delmonte B., Petit J.R., Andersen K.K., Basile-Doelsch I., Maggi V., Lipenkov V.Ya. Dust size evidence for opposite regional atmospheric circulation changes over east Antarctica during the last climatic transition. Climate Dynamics. 2004, 23: 427–438. Dobrica E., Engrand C., Leroux H., Rouzaud J.-N., Duprat J. Transmission Electron Microscopy of CONCORDIA UltraCarbonaceous Antarctic MicroMeteorites (UCAMMs): Mineralogical properties. Geochimica et Cosmochimica Acta. 2012, 76: 68–82. Dunlop J.S. The Cosmic History of Star Formation. Science. 2011, 333: 178–181. Duprat J., Engrand C., Maurette M., Kurat G., Gounelle M., Hammer C. Micrometeorites from Central Antarctic snow: The Concordia collection. Advances in Space Research. 2007, 39: 605–611. Ekaykin A.A., Lipenkov V.Ya., Kuzmina I.N., Petit J.R., Masson-Delmotte V., Johnsen S.J. The changes in isotope composition and accumulation of snow at Vostok station, East Antarctica, over the past 200 years. Annals of Glaciology. 2004, 39 (1): 569–575. Fortman S.M., McMillan J.P., Neese C.F., Randall S.K., Remijan A.J., Wilson T.L., De Lucia F.C. An analysis of a preliminary ALMA Orion KL spectrum via the use of complete experimental spectra from the laboratory. Journ. of Molecular Spectroscopy. 2012. http://dx.doi.org/10.1016/j.jms.2012.08.002 Genge M.J., Engrand C., Gounelle M., Taylor S. The classification of micrometeorites. Meteoritics and Planetary Science. 2008, 43 (3): 497–515. Genge M.J., Grady M.M., Hutchison R. The textures and compositions of fine-grained Antarctic micrometeorites – Implications for comparisons with meteorites. Geochimica et Cosmochimica Acta. 1997, 61: 5149–5162. Grün E., Gustafson B.A.S., Dermott S.F., Fechtig H. (Eds.). Interplanetary Dust. Berlin: Springer. 2001: 804 p. Harrison T.M., Blichert-Toft J., Müller W., Albarede F., Holden P., Mojzsis S.J. Heterogeneous Hadean Hafnium: Evidence of Continental Crust at 4.4 to 4.5 Ga. Science. 2005, 310: 1947–1950. Hezel D.C., Russell S.S., Ross A.J., Kearsley A.T. Modal abundances of CAIs: Implications for bulk chondrite element abundances and fractionations. Meteoritics et Planetary Science. 2008, 43: 1879–1894. Kalirai J.S. The age of the Milky Way inner halo. Nature. 2012, 486: 90–92. Kurat G., Koeberl C., Presper T., Franz B., Maurette M. Petrology and geochemistry of Antarctic micrometeorites. Geochimica et Cosmochimica Acta. 1994, 58: 3879–3904. Kwok S., Zhang Y. Mixed aromatic–aliphatic organic nanoparticles as carriers of unidentified infrared emission features. Nature. 2011, 479: 80–83. Lanci L., Kent D.V., Biscaye P.E. Meteoric smoke concentration in the Vostok ice core estimated from superparamagnetic relaxation and some consequences for estimates of Earth accretion rate. Geophys. Research Letters. 2007, 34. L10803. Mumma M.J., Dello Russo N., Di Santi M.A., Magee-Sauer K., Novak R.E., Brittain S., Rettig T., McLean I.S., Reuter D.C., Xu Li-H. Organic Composition of C/1999 S4 (LINEAR): A Comet Formed Near Jupiter? Science. 2001, 292: 1334–1339. Plane J.M.C. Cosmic dust in the earth’s atmosphere. Chemical Society Reviews. 2012. DOI:10.1039/c2cs35132c. Seife C. Illuminating the Dark Universe. Science. 2003, 302: 2038–2039. Stark D. Searching for the cosmic dawn. Nature. 2012, 489: 370–371. Whipple F.L. The theory of micrometeorites. Part II. In heterothermal atmospheres. Proc. of the National Academy of Sciences. 1951, 37: 19–30. Zheng W., Postman M., Zitrin A., Moustakas J., Shu X., Jouvel S., Høst O., Molino A., Bradley L., Coe D., Moustakas L.A., Carrasco M., Ford H., Benitez N., Lauer T.R., Seitz S., Bouwens R., Koekemoer A., Medezinski E., Batelmann M., Broadhurst T., Donahue M., Grillo C., Infante L., Jha S.W., Kelson D.D., Lahav O., Lemze D., Melchior P., Meneghetti M., Merten J., Nonino M., Ogaz S., Rosati P., Umetru K., van der Wel A. A magnified young galaxy from about 500 million years after the Big Bang. Nature. 2012, 489: 406–408. https://ice-snow.igras.ru/jour/article/view/218 doi:10.15356/2076-6734-2012-4-146-152 Authors who publish with this journal agree to the following terms:Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access). 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CC-BY Ice and Snow; Том 52, № 4 (2012); 146-152 Лёд и Снег; Том 52, № 4 (2012); 146-152 2412-3765 2076-6734 10.15356/2076-6734-2012-4 Antarctica astrobiology cosmic dust ice interplanetary dust particles micrometeorites snow Vostok station Антарктида астробиология космическая пыль лёд межпланетная пыль микрометеориты снег станция Восток info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2015 ftjias https://doi.org/10.15356/2076-6734-2012-4-146-152 https://doi.org/10.15356/2076-6734-2012-4 https://doi.org/10.1016/j.jms.2012.08.002 https://doi.org/10.1039/c2cs35132c 2022-12-20T13:30:26Z During the 2010/11 season nearby the Vostok station the 56th Russian Antarctic Expedition has collected surface snow in a big amount from a 3 m deep pit using 15 220 L vol. containers (about 70 kg snow each). Snow melting and processing by ultra-centrifugation was performed in a clean (class 10 000 and 100) laboratory. Total dust concentrations were not exceeded 37.4 mkg per liter with particle dispersal mode around 2.5 mkm. To analyze the elemental composition of fine dust particles aimed to reveal Antarctic micrometeorites (AMM) two electron microscopy devices equipped with different micro-beams were implemented. As a preliminary result, three particles (of 107 analyzed) featured by Mg content clearly dominated over Al along with Si and Fe as major elements (a feature of carbonaceous chondrites) were observed. By this the Vostok AMM CS11 collection was established. The occurrence of given particles was averaged 2.8% – the factual value obtained for the first time for chondritic type AMM at Vostok which should be considered as the lowest estimate for all other families of AMM. Given the reference profile of total dust content in East Antarctic snow during Holocene (18 mkg/kg) the MM deposition in Antarctica was quantified for the first time – 14 tons per day for carbonaceous chondrites for the Vostok AMM CS11 collection and up to 245 tons per day for all MM types for the Concordia AMM DC02 collection. The results obtained allowed to prove that snow cover (ice sheet in total) of Central East Antarctica is the best spot (most clean of other natural locations and always below 0 ºC) for collecting native MM deposited on the Earth during the last million years and could be useful in deciphering the origin and evolution of solid matter in our Solar System and its effects on Earth-bound biogeochemical and geophysical processes including the life origin. The farther analyses of the Vostok AMMs are in a progress. В 2010/11 г. сотрудниками 56-й Российской антарктической экспедиции в районе станции Восток был отобран ... Article in Journal/Newspaper Annals of Glaciology Antarc* Antarctic Antarctica East Antarctica Ice Sheet Антарктида Ice and Snow (E-Journal) Antarctic East Antarctica Vostok Station ENVELOPE(106.837,106.837,-78.464,-78.464) Ice and Snow 52 4 146

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