Geomagnetic Storm Effects on the Solar Neutron Telescope at Sierra Negra, Mexico
Por:
Newton-Bosch J., González L.X., Valdés-Galicia J.F., Morales-Olivares O.G., Muraki Y., Shibata S., Matsubara Y., Sako T., Watanabe K., Monterde-Andrade F., Perea-Contreras S., Ortiz E., Musalem O., Hurtado A., Taylor R.
Publicada:
1 ene 2024
Resumen:
The effects of Space Weather events on cosmic rays detected by the Solar Neutron Telescope (SNT) at Sierra Negra, Mexico, were studied. The SNT is part of the Sierra Negra Cosmic Ray Observatory (SN-CRO), located at 4580 m a.s.l. We analyzed the data recorded by six SNT channels (C2, C3, C4, N2, N3, and N4) during geomagnetic storms from December 2015 to December 2022. Using the Dst and Kp indices, 30 moderate (Dst < -50 nT, Kp = 5) and intense (Dst < -100 nT, Kp = 7) geomagnetic storms were selected. The C2, C3, C4, N2, N3 and N4 channels detect charged and neutral particles, respectively, with energy deposition thresholds of E > 60, 90 and 120 MeV. The counting rates of these channels present diurnal variation, which was removed with the seasonal trend decomposition using Loess method. After data treatment, either significant decreases or enhancements were observed in the trend of at least one SNT channel for 21 of the analyzed events. Two confirmed Forbush decreases were also identified. © Copyright owned by the author(s) under the terms of the Creative Commons.
Filiaciones:
Newton-Bosch J.:
Instituto de Geofísica, Universidad Nacional Autónoma de Mexico, Circuito de la Investigación Científica, CDMX, 04510, Mexico
González L.X.:
Instituto de Geofísica, Universidad Nacional Autónoma de Mexico, Circuito de la Investigación Científica, CDMX, 04510, Mexico
LANCE/SCiESMEX, Instituto de Geofísica, Unidad Michoacán, Universidad Nacional Autónoma de Mexico, Michoacan, Morelia, 58190, Mexico
Valdés-Galicia J.F.:
Instituto de Geofísica, Universidad Nacional Autónoma de Mexico, Circuito de la Investigación Científica, CDMX, 04510, Mexico
Morales-Olivares O.G.:
Escuela Nacional de Ciencias de la Tierra, Universidad Nacional Autónoma de Mexico, Circuito de la Investigación Científica, CDMX, 04510, Mexico
Muraki Y.:
Institute for Space-Earth Environmental Research, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8601, Japan
Shibata S.:
College of Engineering, Chubu University, Kasugai, 487-8501, Japan
Matsubara Y.:
Institute for Space-Earth Environmental Research, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8601, Japan
Sako T.:
Institute for Cosmic Ray Research, University of Tokyo, Kashiwanoha, Kashiwa, Chiba, 277-8582, Japan
Watanabe K.:
National Defense Academy of Japan, 1-10-20 Hashirimizu, Kanagawa, Yokosuka, 239-8686, Japan
Monterde-Andrade F.:
Instituto de Geofísica, Universidad Nacional Autónoma de Mexico, Circuito de la Investigación Científica, CDMX, 04510, Mexico
Perea-Contreras S.:
Instituto de Geofísica, Universidad Nacional Autónoma de Mexico, Circuito de la Investigación Científica, CDMX, 04510, Mexico
Ortiz E.:
Escuela Nacional de Ciencias de la Tierra, Universidad Nacional Autónoma de Mexico, Circuito de la Investigación Científica, CDMX, 04510, Mexico
Musalem O.:
Instituto de Geofísica, Universidad Nacional Autónoma de Mexico, Circuito de la Investigación Científica, CDMX, 04510, Mexico
Hurtado A.:
Instituto de Geofísica, Universidad Nacional Autónoma de Mexico, Circuito de la Investigación Científica, CDMX, 04510, Mexico
Taylor R.:
Instituto de Geofísica, Universidad Nacional Autónoma de Mexico, Circuito de la Investigación Científica, CDMX, 04510, Mexico
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