Cross Correlation Between Plasmaspheric Hiss Waves and Enhanced Radiation Levels at Aviation Altitudes
- Title
- Cross Correlation Between Plasmaspheric Hiss Waves and Enhanced Radiation Levels at Aviation Altitudes
- Creator
- Aryan H.; Bortnik J.; Tobiska W.K.; Mehta P.; Siddalingappa R.; Hogan B.
- Description
- Enhanced radiation in the Earth's atmosphere can pose serious hazards to pilots, aircraft passengers, and commercial space travelers. Recent results have shown, statistically, that there is a strong correlation between dose rates observed by Automated Radiation Measurements for Aerospace Safety (ARMAS) instruments at aviation altitudes (>9km) and plasmaspheric hiss wave power measured by NASA's Van Allen Probes within the inner magnetosphere. Plasmaspheric hiss waves play a very important role in removing energetic electrons from the Earth's radiation belts by precipitating them into the upper atmosphere. These relativistic electrons generally drift eastwards along closed magnetic drift shells. In this study, we use magnetic conjunction events between ARMAS and the Van Allen Probes to analyze the causality between plasmaspheric hiss waves and enhanced radiation observed at aviation altitude. We specifically study how the size of the conjunction window and a shift in L and MLT of the conjunction window affect the correlation between dose rates and plasmaspheric hiss wave power. This is to determine if the observed enhanced radiation at aviation altitude is indeed caused by the plasmaspheric hiss waves in the inner magnetosphere. The results show that the enhanced radiation levels are only correlated with plasmaspheric hiss waves within conjunction windows of ?1 (Formula presented.) L (Formula presented.) 1 and 0 (Formula presented.) MLT (Formula presented.) 2. The correlation between dose rate and hiss wave power increases slightly if ARMAS is shifted approximately 1hr in MLT to the east of the Van Allen Probes, consistent with the drift trajectory of the electrons precipitating into the atmosphere. 2025. The Author(s).
- Source
- Space Weather, Vol-23, No. 2
- Date
- 2025-01-01
- Publisher
- John Wiley and Sons Inc
- Subject
- aviation altitudes; dose rates; enhanced radiation; plasmaspheric hiss waves; space hazards; Van Allen radiation belt
- Coverage
- Aryan H., University of California Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, CA, United States; Bortnik J., University of California Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, CA, United States; Tobiska W.K., Space Weather Division, Space Environment Technologies, Pacific Palisades, CA, United States; Mehta P., West Virginia University, Mechanical and Aerospace Engineering, Morgantown, WV, United States; Siddalingappa R., West Virginia University, Mechanical and Aerospace Engineering, Morgantown, WV, United States, Department of Computer Science, Christ University, Karnataka, Bangalore, India; Hogan B., Space Weather Division, Space Environment Technologies, Pacific Palisades, CA, United States
- Rights
- All Open Access; Gold Open Access
- Relation
- ISSN: 15427390
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Aryan H.; Bortnik J.; Tobiska W.K.; Mehta P.; Siddalingappa R.; Hogan B., “Cross Correlation Between Plasmaspheric Hiss Waves and Enhanced Radiation Levels at Aviation Altitudes,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 25, 2025, https://archives.christuniversity.in/items/show/12501.