![]() HEPD is advancing the observations collected by the PAMELA space experiment and NASA Van Allen Probe during the last 15 years through the 23rd and 24th solar cycles. They enable an extensive testing and validation of current theoretical and empirical models aimed at predictions of temporal changes in this critical region of space. ![]() These are the first results on SAA protons at Low-Earth Orbit during the minimum activity phase between the 24th and the 25th solar cycles below 250 MeV. In this work, proton data from HEPD in the 40 MeV–250 MeV energy range, collected inside the SAA during the period between August 2018 and December 2020, are presented and compared with the up-to-date AP9 model by NASA. It is providing crucial new insight in the physical dynamics of the radiation belts in the Earth’s magnetosphere, in particular in the South Atlantic Anomaly (SAA). It’s allowing more high-energy radiation to penetrate deeper through near orbit, the atmosphere and to our surface. It’s been dubbed the South Atlantic Anomaly. South Atlantic Anomaly from 2015 through 2025 showing the geomagnetic intensity at the Earths surface and the core-mantle boundary. m^2 ) is not so low when compared with recent paleomagnetic data for the Holocene (last 12ka) and for the entire Brunhes geomagnetic normal polarity (last ∼0.8Ma), although the rate of decay is similar to that given by previous documented geomagnetic reversals or excursions.The High-Energy Particle Detector (HEPD) on board the China Seismo-Electromagnetic Satellite (CSES-01) was launched in February 2018, with a foreseen mission lifetime of over 5 years. It’s a hole that reaches across the heart of South America, over the South Atlantic and into Africa.However, the current value of the dipolar moment (7.7 10^22 A The South Atlantic Anomaly is a phenomena that takes place in the ionosphere, at the magnetic equator, where the Van Allen radiation belt (particles emited. The presence of the reversal patches at the CMB seems to be characteristic during the preparation phase of a geomagnetic transition. The vast majority of SEUs found have occurred over the South Atlantic Anomaly, an anomaly in Earth’s magnetic field that causes particle storms at low orbital altitudes. In addition, we demonstrate that the quadrupole field mainly controls this reversal patch along with the rapid decay of the dipolar field. Our results reveal that one of the reversed polarity patch located at the CMB under the South Atlantic Ocean is growing with a pronounced rate of −2.54♱05 nT per century and with western drift. In this paper we carry out a detailed study about this issue using the most recent models that also include data from the last ESA mission Swarm. Several studies associate this anomaly as an indicator of an upcoming geomagnetic transition, such an excursion or reversal. The magnetic anomaly in the South Atlantic Ocean was first discovered in 1958. Its extent area at the Earth’s surface is continuously growing since the intensity instrumental measurements are available covering part of the Southern Hemisphere and centered in South America. The South Atlantic Anomaly is nowadays one of the most important features of the Earth’s magnetic field. 13:48 Marko Markovic 474×292× (18463 bytes) This is vector recreation of this PD image. The South Atlantic Anomaly: The Key for a Possible Geomagnetic Reversal
0 Comments
Leave a Reply. |