DSC of the ice, showing the ranges of melting and boiling values.

DSC of the ice, showing the ranges of melting and boiling values.

Source publication
Article
Full-text available
Certain local atmospheric anomalies, such as the formation of unusually large ice conglomerations (megacryometeors), have been proposed to be a potential natural hazard for people and aviation, as well as geoindicators for fingerprinting larger-scale atmospheric environmental changes. On March 13th 2007, at approximately 10:15 am, an ice chunk weig...

Context in source publication

Context 1
... megacryometeor water has a pH in the range of from 7.05 to 7.86 (AE0.10), and conductivity values from 56.4 to 69.2 (AE7) mS cm À1 . Thermal analysis of the ice indicates melting values ranging from À0.09 C to 3.12 C (316.4 J g À1 ) and boiling values from 99.34 C-104.32 C (1959 J g À1 ) (Fig. 2) vapour. Regarding the analysis by GC-MS, it is important to note that no organic compounds were detected in the ice samples, which were specifically extracted from the interior of the megacryometeor fragments. Finally, in order to determine the biological contamination of the ice, three aliquots of ice-melt water were sampled from the ...

Similar publications

Article
Full-text available
The identification of latent fingerprints is crucial for the security agencies in order to identify persons suspected of having committed criminal acts. Latent prints often remain as random impressions onto the surfaces of various objects. Huge progress has been made in the identification processes using rolled and plain impressions fingerprints, w...

Citations

... It is highly like that ejected water, rock and soil may become comets or orbit the solar system as frozen rivers, lakes and ice-meteors (Beech, 2006;Martinez-Frias et al. 2006;Orellana et al.2008;Snyder & Joseph, 2015). Some of this ejected mass and frozen water would eventually fall back to the planet from which they were ejected (Beech, 2006;Martinez-Frias et al. 2006;Orellana et al. 2008). Others might intersect the orbits of other worlds. ...
Article
Full-text available
Life-bearing meteors, asteroids, comets and frozen bodies of water which had been ejected from Mars or other planets via bolide impact may have caused the Cambrian Explosion of life on Earth 540 million years ago. Reviewed in support of this theory are historical and worldwide reports of blood, gore, flesh and a variety of organisms raining from clear skies on warm days along with freezing rains and ice and sometimes embedded in ice and which a 2008 report in the International Journal of Astrobiology linked to comets and celestial events. Numerous reports have documented, within meteors, fossilized organisms resembling fungi, algae, and diatoms. In 1880 specimens resembling fossilized crinoids, corals and sponges were identified within an assemblage of meteorites that had fallen to Earth and investigators speculated that evolution may have occurred in a similar fashion on other planets. Russian scientists have reported that mosquito larvae, the majority of seeds from a variety of plants, and fish eggs and embryos from crustaceans develop and reproduce normally after 7 to 13 months exposure to space outside the ISS and could travel to and from Earth and Mars and survive. Investigators have identified specimens on Mars that resemble stromatolites, bacterial mats, algae, fungi, and lichens, and fossils resembling tube worms, Ediacarans, Metazoans and other organisms including those with eyes and multiple legs. McKay speculated that evolution may have taken place more rapidly on Mars and experienced a "Cambrian Explosion" in advance of Earth. Eight hundred million years ago an armada of asteroids, comets and meteors more numerous and several times more powerful than the Chicxulub impact, invaded the inner solar system and struck the Earth-Moon system. It is highly probable Mars was also struck and massive amounts of life-bearing debris was cast into space. Genetic studies indicate the first metazoans appeared on Earth 750 to 800 million years ago soon after this impacting event. Given the relatively sudden "explosive" appearance of complex life with bones, brains, and modern eyes, as well as those that were bizarre and quickly became extinct, and given there are no antecedent intermediate forms and that previous life forms consisted of only 11 cell types prior to the Cambrian Explosion, the evidence, in total, supports the theory that life on other planets and Mars may have been transported to Earth 800 million years ago and contributed to the Cambrian Explosion.
... Previous contributions on the knowledge of megacryometeors have been focused on the study of their textures (zones of 'massive ice', large isolated cavities, millimetre-sized oriented air bubbles and ice layering) and their hydrochemistry and isotopic composition, all of them evidencing a complex history of growth into the atmosphere (Martinez-Frias et al. 2000, 2001, 2005; Santoyo et al. 2002; Martinez-Frias & Delgado 2006; Orellana et al. 2008). To the best of our knowledge, no spectroscopic studies have been performed in these megacryometeors. ...
Article
Full-text available
For the first time, micro-Raman spectroscopy has been applied to the structural study of four megacryometeors (extremely large atmospheric ice conglomerations that fall in general under blue-sky atmospheric conditions) that fell in Spain. The Raman spectra taken on the megacryometeor cores have been compared with those obtained from an in situ and online study performed on the crystallization process of water in the laboratory. A detailed comparison of the band profiles obtained made it possible to place the formation of the megacryometeors within a particular range of temperatures (-10 to -20 degrees C), which in turn can be related with the altitude of formation in the atmosphere. These results have also been compared with isotope concentrations (delta(18)O and deltaD) previously obtained in these cores. The two sets of results show a close correlation.
Article
Full-text available
Ice meteors have been reported falling form the skies since the 19th century. The consensus of opinion is they are not meteors at all, but formed under unusual atmospheric conditions effecting the troposphere. Some scientists believe, however, that ice meteors, i.e. Megacryometeors, have an extraterrestrial origin. A review of the literature and arguments pro and con regarding the possible origins of megacryometeors is presented, as well as new data on a ice meteor subjected to electron microscopic, isotope ratio and tritium analysis. The results favor an extraterrestrial origin. Although admittedly speculative, based on this data and a review of the literature, the authors theorize this particular megacryometeor may have originated from Saturn's E ring, or from the surface of Saturn's moon Enceladus.
Article
Four unusually large ice-stones (megacryometeors) weighing several kilograms fell in western India during October-November 2010. Samples were retrieved from three fall events. To study the origin and formation of these megacryometeors, δ18O, δD, chemical composition and γ-activity were measured. The range of δ18O-δD is similar to the local meteoric water, suggesting origin from local atmospheric water vapour. The relative humidity at ~4 km altitude was higher during a few days before and after the fall. No γ- activity from cosmogenic radionuclides such as 26Al could be detected in the inherent dust. These studies indicate terrestrial origin of these megacryometeors.