Relationship Among a Supernova, a Transition of Polarity of the Geomagnetic Field and the Pliocene-Pleistocene Boundary

被引：1
作者：
Compagnucci, R. H. [1 ]
Orgeira, M. J. [2 ,3 ]
Sinito, A. M. [4 ]
Cappellotto, L. [3 ]
Plastani, S. [5 ]
机构：
[1] Univ Buenos Aires, CONICET, Buenos Aires, DF, Argentina
[2] Univ Buenos Aires, Fac Ciencias Exactas Nat, Buenos Aires, DF, Argentina
[3] Univ Buenos Aires, IGEBA, CONICET, Buenos Aires, DF, Argentina
[4] Univ Ctr Prov Buenos Aires, Tandil, Argentina
[5] Univ Buenos Aires, IDEAN, CONICET, Buenos Aires, DF, Argentina
来源：
ADVANCES IN GEOMORPHOLOGY AND QUATERNARY STUDIES IN ARGENTINA | 2020年
关键词：
Geomagnetic field reversion; Supernovae; Pliocene-Pleistocene boundary; Paleoclimatology; Global changes; Mutations; Human evolution; NORTHERN-HEMISPHERE GLACIATION; GALACTIC COSMIC-RAYS; ICE-AGE EPOCHS; MASS EXTINCTIONS; CLIMATE-CHANGE; QUATERNARY SYSTEM/PERIOD; LAKE ELGYGYTGYN; INTENSIFICATION; ONSET; EAST;
D O I：
10.1007/978-3-030-22621-3_1
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
After the Middle Miocene, two important climatic changes took place, consisting mainly of cooling in both hemispheres. One occurred between 7.0 and 5.4 Ma and another at the end of the Pliocene, which marked the beginning of the Pleistocene in approximately 2.58 Ma. The proposal of this presentation is to analyze diverse forcings of these climatic changes, such as the influence of the joint occurrence of reversions of the geomagnetic field and explosions of a supernova. These events occurred coincidentally with the cooling of Earth. Also, biological changes in those time intervals are analyzed, especially the evolution of the Hominins since the oldest hominin fossils. The characteristics of the Galactic Cosmic Rays, its influence on the climate and its potential mutogenetic effect were taken into account. Briefly, according to our analysis, it seems to be evident that together with other factors, the joint occurrence of the explosion of a supernova at less than 100 pc from the Earth and the weakening and/or reversion of the Geomagnetic Field was an important factor that promoted these two climatic and ecosystem changes.
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页码：1 / 39
页数：39
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