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    Wyświetlanie 1-12 z 12
    Tytuł:
    Spadki meteorytów w latach 2020–2021. Okoliczności i obserwacje
    Meteorite falls in 2020–2021. Circumstances and observations
    Autorzy:
    Morys, Jarosław
    Żmija, Mateusz
    Powiązania:
    https://bibliotekanauki.pl/articles/2034034.pdf
    Data publikacji:
    2022-03
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    meteorite
    meteorite fall
    meteor
    fireball
    bolide
    summary
    Opis:
    The paper presents the circumstances and data accompanying meteorite falls in recent years. The study contains descriptions of 21 falls observed in 2020 and 15 falls in 2021. These phenomena took place on all continents, except the polar regions. In conclusion, this work is a collection of several dozen stories about freshly fallen meteorites. They show many aspects connected with the observations and the hunting for new specimens.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2022, 13; 67-106
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Spadki meteorytów w 2022 roku. Okoliczności i obserwacje
    Meteorite falls in 2022. Circumstances and observations
    Autorzy:
    Morys, Jarosław
    Żmija, Mateusz
    Powiązania:
    https://bibliotekanauki.pl/articles/2195012.pdf
    Data publikacji:
    2023
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    meteorite
    meteorite fall
    meteor
    fireball
    bolide
    summary
    Opis:
    In 2022, there were ten meteorites found worldwide after fresh falls. These are primarily ordinary chondrites, but one achondrite fall was also recorded. Meteorite falls occurred in the United States (3) and China (2) but also in Algeria, Brazil, Slovakia, India, and the Philippines. This paper shows how these meteorites were found and provides conclusions before future searches.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2023, 14; 141-156
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Spadki meteorytów w 2023 roku. Okoliczności i obserwacje
    Meteorite falls in 2023. Circumstances and observations
    Autorzy:
    Żmija, Mateusz
    Powiązania:
    https://bibliotekanauki.pl/articles/30146495.pdf
    Data publikacji:
    2024-04
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    meteorite
    meteorite fall
    meteor
    fireball
    fireball network
    bolide
    Opis:
    In 2023, there were 12 meteorite falls around the world. Among them, the Saint-Pierre-le-Viger meteorite stands out, because the fall was preceded by the observation of an asteroid approaching the Earth. The article also drew attention to the presence of meteorites causing material damage and to the finds made by Polish searchers.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2024, 15; 178-194
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Spadki meteorytów w 2017 roku. Okoliczności i obserwacje
    Meteorite falls in 2017. Circumstances and observations
    Autorzy:
    Żmija, Mateusz
    Powiązania:
    https://bibliotekanauki.pl/articles/1033123.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    bolide
    chondrite
    eucrite
    fireball
    meteor
    meteorite
    meteorite fall
    summary
    Opis:
    This scientific paper is a summary of the meteorite falls in 2017: Broek in Waterland (Holland), Tres Irmaos (Brazil), Serra Pelada (Brazil) and Kheneg Ljouâd (Morocco). The study also includes a section about unconfirmed falls, such as Puya Medio (Colombia), Mukundpura (India), Crawford Bay (Canada) and Sadiya (India). The vast majority of these specimens is ordinary chondrites of the L and LL groups. Only Serra Pelada meteorite turned out to be eucrite and Mukundpura is suspected to be carbonaceous chondrite. The author collects and organizes basic information about these findings and compares the latest data with statistics from previous years. The description of the circumstances of finding meteorites are brief and maintained in the popular-scientific tone. The text also includes a set of fireballs and bolides that could end with a meteorite fall. Among them is also a bolide that was visible from Poland. The thesis resembles the criteria for dividing meteors and notes the differences in their naming. It is extended by analogies and comparisons that make possible to look at the issues from different perspectives: from the statistical, through the media, to the historical one.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2018, 9; 187-205
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Spadki meteorytów w 2018 roku. Okoliczności i obserwacje
    Meteorite falls in 2018. Circumstances and observations
    Autorzy:
    Żmija, Mateusz
    Powiązania:
    https://bibliotekanauki.pl/articles/1033142.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    achondrite
    bolide
    chondrite
    fireball
    meteorite
    meteorite fall
    summary
    superbolide
    Opis:
    This scientific paper aims to systematize knowledge about the circumstances of meteorite falls in 2018. Eight of them were officially confirmed by The Meteoritical Society: Hamburg (USA), Ablaketka (Kazakhstan), Aba Pan (Nigeria), Mangui (China), Ozerki (Russia), Renchen (Germany), Gueltat Zemmour (Morocco), Komaki (Japan). Seven more have not yet been classified: Central Kalahari (Botswana), Glendale (USA), Benenitra (Madagascar), Bhakkar (Pakistan), Ghadamis (Libya), Elkouran (Morocco) and meteorite fall from the Sahara Desert. It turns out that the most numerous group of meteorite falls in 2018 were L6 chondrites. There were no iron or stony-iron falls. The author collected information from many different sources. He analyzed entries in the MetBull catalog, publications in social media and press reports in order to compare them with official data from previous years. In this way, he tries to prove that although the circumstances of each meteorite fall are different, coherent conclusions can be drawn from them, and these can help meteorite researchers, for example, in verifying eyewitness accounts.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2019, 10; 199-221
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bulk chemical composition of Sołtmany chondrite
    Autorzy:
    Przylibski, T. A.
    Łuszczek, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/411498.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    meteorite
    ordinary chondrite
    L-chondrite
    bulk composition
    meteorite fall
    observed fall
    Opis:
    The authors examined the bulk chemical composition of the Sołtmany chondrite which fell on April 30th, 2011 in Northern Poland. Based on the analysis of 47 elements, it was concluded that Sołtmany is representative of L-type of ordinary chondrites. However, compared to the average values observed in other L-type ordinary chondrites, Sołtmany displays higher content of Ni, P, Cd, Pb, and As. The Ni and P content closely resembles typical values for H-type ordinary chondrites. Furthermore, Sołtmany displays other distinct properties including very low Zn content and lower contents of Mo and Zr than the average values found in other L-type ordinary chondrites. Consistent with other L-type ordinary chondrites, the absolute content of REE in Sołtmany is higher than that of CI-type carbonaceous chondrites while the REE trend lines for both Sołtmany and CI-chondrites are similar. Due to similar times of year of when both falls took place and the proximity of their strewn fields, the chemical composition of Sołtmany was compared with that of Jesenice, an L6 ordinary chondrite which fell on April 9th, 2009 in Europe. The analysis led to a conclusion that Sołtmany and Jesenice are not launch-paired. Nevertheless, even though they do not represent fragments of the same meteoroid, their origin on a common parent body (an asteroid – planetesimal) cannot be conclusively ruled out on the sole basis of their bulk chemical composition.
    Źródło:
    Meteorites; 2012, 2, No. 1-2; 31-37
    2299-0313
    2299-1220
    Pojawia się w:
    Meteorites
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Spadki meteorytów w 2019 roku. Okoliczności i obserwacje
    Meteorite falls in 2019. Circumstances and observations
    Autorzy:
    Żmija, Mateusz
    Powiązania:
    https://bibliotekanauki.pl/articles/1033169.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    bolide
    carbonaceous
    chondrite
    fireball
    meteor
    meteorite
    meteorite fall
    summary
    Opis:
    In 2019 two meteorite showers occurred on Earth, which ended with the fall of hundreds of fragments in Cuba and Costa Rica. Apart from them, meteorites with a total weight of probably less than 10 kg landed in Algeria, Morocco, Iran, India, and Germany. This work is another summary of the year in terms of meteorite falls. It includes information on the circumstances of these phenomena and their scientific consequences. The author collected information from many sources, especially the media and meteorite hunters, to describe in a brief form how the meteorites fell last year. The purpose of his work is to gather basic and proven knowledge, which can serve as an inspiration to further explore the history of meteorites, own meteorite hunting, and draw the attention of researchers to interesting falls in distant regions of the world.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2020, 11; 141-157
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Meteoryt Ribbeck – relacje polskich poszukiwaczy
    Ribbeck meteorite – reports of Polish searchers
    Autorzy:
    Żmija, Mateusz
    Powiązania:
    https://bibliotekanauki.pl/articles/30146485.pdf
    Data publikacji:
    2024-04
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    meteorite
    meteorite fall
    aubrite
    ribbeck
    2024 BX1
    fireball
    fireball network
    meteorite expedition
    Opis:
    The paper describes the successes of Polish meteorite searchers following the fall of asteroid 2024 BX1 near Ribbeck, Germany. They found a first specimen weighing 171 grams, a main mass of 225 grams and more than 30 smaller fragments with masses in the range of 1–60 grams. The summary is supplemented by personal observations and reports of finders.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2024, 15; 202-214
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Skytinel – prototyp nowej kamery bolidowej all-sky
    Skytinel – prototype of a new all-sky fireball camera
    Autorzy:
    Żmija, Mateusz
    Powiązania:
    https://bibliotekanauki.pl/articles/30146486.pdf
    Data publikacji:
    2024-04
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    meteorite
    meteorite fall
    aubrite
    ribbeck
    2024 BX1
    fireball
    fireball network
    meteorite expedition
    Skytinel
    Opis:
    The paper describes the successes of Polish meteorite searchers following the fall of asteroid 2024 BX1 near Ribbeck, Germany. They found a first specimen weighing 171 grams, a main mass of 225 grams and more than 30 smaller fragments with masses in the range of 1–60 grams. The summary is supplemented by personal observations and reports of finders.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2024, 15; 195-201
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sołtmany meteorite
    Autorzy:
    Karwowski, Ł.
    Powiązania:
    https://bibliotekanauki.pl/articles/411492.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    meteorite
    ordinary chondrite
    L6 chondrite
    meteorite fall
    hammer meteorite
    Warmia-Masuria Province
    Sołtmany village
    Opis:
    This paper presents the results of a mineralogical and petrological study of the Sołtmany meteorite, which fell on April 30, 2011 in northern Poland. The meteorite was found almost immediately after it fell and has been little altered by weathering. Sołtmany is not the only observed fall of an L6 chondrite over Europe in the past few years. The preceding fall of this type, Jesenice (Slovenia), was also witnessed in April of 2009. However, it was not until several weeks after the fall that the first specimen of Jesenice was found, whereas Sołtmany was collected after a few minutes and submitted for analysis within a couple of days. The author presents mineral and petrographic features and chemical characteristics of mineral phases in Sołtmany. The mineral components are represented by metallic phases (kamacite, taenite, tetrataenite, native copper), as well as chromite, olivine, low and high-calcium pyroxene, feldspar, chlorine-bearing apatite, and merrillite. This study also describes the texture of the meteorite and takes notice of a low number of preserved chondrules and the presence of oval chondrule like areas, which exhibit a metamorphosed, recrystallized texture. Sołtmany was classified as an L6 ordinary chondrite with a weathering grade of W0. A shock stage S2 was determined on the basis of undulose extinction and lack of planar fractures in olivine crystals.
    Źródło:
    Meteorites; 2012, 2, No. 1-2; 15-30
    2299-0313
    2299-1220
    Pojawia się w:
    Meteorites
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Chondryt Sołtmany
    Sołtmany chondrite
    Autorzy:
    Przylibski, Tadeusz A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1033061.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    Gefion family
    L6
    asteroid
    atomic weight
    bulk chemistry
    cosmic-ray exposure age
    cosmogenic radionuclides
    density
    fusion crust
    magnetic susceptibility
    meteorite
    meteorite age
    meteorite fall
    mössbauer spectroscopy
    noble gas
    ordinary chondrite
    organic matter
    parent body
    porosity
    primordial radionuclides
    thermophysical properties
    troilite thermometer
    Opis:
    The Sołtmany hammer meteorite is classified as an ordinary chondrite type L6, W0, S2. At present it is the most thoroughly and comprehensively examined Polish meteorite. A comprehensive petrological, mineralogical and geochemical analysis alongside the investigation of its physical and particularly thermophysical properties, and, most of all, analyses of cosmogenic radionuclides and noble gases isotopes content, as well as the use of a troilite thermometer has made it possible to draw interesting conclusions concerning the genesis and evolution of the parent body and the history of the parent meteoroid and, finally, the Sołtmany meteorite. The present report attempts at summing up the results of studies conducted at several European research centres in the last four years. The age of the the Sołtmany chondrite parent rock has been defined at 4.137 billion years. It was formed at a temperature of up to 440–450 K (about 170°C), probably at a depth of up to 3 to 7 km under the surface of the parent body, i.e. at a pressure of the order of 1–2.4 kbar. Such a low temperature during the accretion, diagenesis and metamorphism of the parent body may point to its complicated development, which may be in part due to collisions of partially melted planetesimals. Like with other type L ordinary chondrites, one can infer that the parent body could have been destroyed about 467 million years ago, at the time of a catastrophic collision which led to the formation of Gefion family of planetoids. Perhaps one of the bodies in this family was involved in another collision about 29.2 million years ago, which resulted in ejecting the parent meteoroid of the Sołtmany chondrite onto the Earth collision trajectory. Before entering the Earth’s atmosphere, this meteoroid had the mass of about 36 kg and the diameter of ca 13.5 cm. During its flight through the atmosphere, it rotated and somersaulted, which resulted in the formation of an uniform thin (0.5–0.7 mm) fusion crust, whose temperature reached 1000°C. In the last phase, the Sołtmany meteorite fell almost vertically and its mass was a mere 3% of the mass of the parent meteoroid – 1.066 kg. It hit the roof and then the concrete stairs of a farm building, which caused it to break into two bigger and many small pieces. It was found a few minutes after the fall, which occurred at 6:03 a.m. (CEST, UTC+2:00) on 30 April 2011, by Wydmińskie Lake in northern Poland (54°00,53’N, 22°00,30’E). The Sołtmany chondrite is one of just 14 meteorites in which the activity concentration of the cosmogenic 52Mn has been determined, and one of the few ordinary chondrites where the concentration of organic matter has been defined. As a result, it was found out that unlike in carbonaceous CI chondrites, the composition of organic particles is dominated by less complex compounds (CHO and CHOS) than CHNO and CHNOS compounds. This may indicate the decomposition of more complex organic compounds into particles with simple structures during magmatic and metamorphic processes related to formation of type L ordinary chondrites.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2016, 7; 93-122
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Meteors and meteorite falls in Morocco
    Autorzy:
    Ibhi, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/411969.pdf
    Data publikacji:
    2013
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Meteor
    meteorite
    fall
    bright bolide
    Morocco
    Opis:
    During the last eighty years, thirteen meteorite falls were recorded in Morocco, which ten are well documented and named Douar Mghila, Oued el Hadjar, Itqiy, Zag, Bensour, Oum Dreyga, Benguerir, Tamdakht, Tissint and Aoussred. It represent only 0.011 % of the Moroccan declared meteorites.The authenticated observed falls represent three types of different meteorites, eight ordinary chondrites (Four of type LL, three of type H and one of type EH), one carbonaceous chondrite and one Shergottite basaltic achondrites. The Morocco meteorite fall recovery rate, during the past eighty years, is low 0.11 falls per year on average per 2.11 km2 (or approximately one fall recovery per 10 year time interval).
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2013, 12; 28-35
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-12 z 12

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