Characterization of high latitude radio wave propagation over Canada

被引：8

作者：

Cameron, T. G. ^{[1
]}

Fiori, R. A. D. ^{[1
]}

Warrington, E. M. ^{[2
]}

Stocker, A. J. ^{[2
]}

Thayaparan, T. ^{[3
]}

Danskin, D. W. ^{[1
]}

机构：

[1] Nat Resources Canada, Geomagnet Lab, 2617 Anderson Rd, Ottawa, ON K1A 0E7, Canada

[2] Univ Leicester, Sch Engn, Univ Rd, Leicester LE1 7RH, Leics, England

[3] Ottawa Res Ctr, Def Res & Dev Canada, 3701 Carling Ave, Ottawa, ON K1A 0Z4, Canada

来源：

JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS | 2021年 / 219卷

基金：

英国工程与自然科学研究理事会;

关键词：

High-frequency radiowave propagation; Ionosphere; Absorption; Space weather; THE-HORIZON RADAR; POLAR-CAP ABSORPTION; PARAMETERIZATION; SUPERDARN; REGION; PATHS;

D O I：

10.1016/j.jastp.2021.105666

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

High frequency (HF) radio wave propagation is sensitive to ionospheric disturbances caused by space weather. Changes in propagation conditions can be directly measured with an HF transmitter/receiver link. This paper presents data from one such link, consisting of a transmitter located in Ottawa, ON, Canada, and a directional receiver located in Alert, NU, Canada. The transmitter emits signals at 6 distinct frequencies between 5.4 and 14.4 MHz on a set schedule that are detected and processed by the receiver. Based on 644 days of archived data, a statistical analysis characterizing HF radio wave propagation conditions over the course of the day and over the year are presented. HF propagation is found to follow the regular diurnal variation in ionospheric density, modulated by seasonal trends. A new method for distinguishing space weather effects from diurnal changes to HF propagation is presented, which utilizes quiet day baselines, similar to riometer quiet day curves. This method allows for easy analysis of the impacts of space weather on HF radio propagation between two points. This method is applied to an auroral absorption event that occurred on 06 June 2016, and is used to successfully distinguish auroral absorption related dropouts from dropouts related to daily ionospheric variation.

引用

页数：14

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