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Ionospheric Plasma Fluctuations Induced by the NWC Very Low Frequency Signal Transmitter
Author(s) -
Ivarsen Magnus F.,
Park Jaeheung,
Jin Yaqi,
Clausen Lasse B. N.
Publication year - 2021
Publication title -
journal of geophysical research: space physics
Language(s) - English
Resource type - Journals
eISSN - 2169-9402
pISSN - 2169-9380
DOI - 10.1029/2021ja029213
Subject(s) - transmitter , ionosphere , context (archaeology) , plasma , physics , signal (programming language) , geophysics , telecommunications , geology , computer science , paleontology , channel (broadcasting) , quantum mechanics , programming language
The Australian NWC (North West Cape) signal transmitter is known to strongly interfere with the topside ionosphere. We analyze 456 conjunctions between Swarm A, B and NWC, in addition to 58 conjunctions between NorSat‐1 and NWC. The in‐situ measurements provided by these satellites include the 16 Hz Swarm Advanced Plasma Density data set, and the novel 1,000 Hz plasma density measurements from the m‐NLP system aboard NorSat‐1. We subject the data to a detailed PSD analysis and subsequent superposed epoch analysis. This allows us to present comprehensive statistics of the NWC‐induced plasma fluctuations, both their scale‐dependency, and their climatology. The result should be seen in the context of VLF signal transmitter‐induced plasma density fluctuations, where we find counter‐evidence for the existence of turbulent structuring induced by the NWC transmitter.