منابع مشابه
High Frequency Radar Astronomy With HAARP
At high frequency, radio waves will interact with space plasmas and surfaces of local astronomical objects, producing an echo that can provide new diagnostic data. The availability of high power radars operating at high frequencies opens a window for the remote investigation of our surrounding space environment. We discuss and illustrate this technique with some specific examples.
متن کاملOperation and Application of a Regional High-Frequency Radar Network in the Mid-Atlantic Bight
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متن کاملLow Frequency Waves in the Santa Barbara Channel Observed by High Frequency Radar
[1] Three years of high-frequency radar observations in the Santa Barbara Channel reveal sequences of alternating cyclonic and anticyclonic vortices propagating westward with a period of approximately 2 weeks. The sequences last up to a few months and occur intermittently throughout the year. The velocity distributions of cyclones and anticyclones are antisymmetric with a mean propagation speed...
متن کاملTsunami Arrival Detection with High Frequency (HF) Radar
Quantitative real-time observations of a tsunami have been limited to deep-water, pressure-sensor observations of changes in the sea surface elevation and observations of sea level fluctuations at the coast, which are essentially point measurements. Constrained by these data, models have been used for predictions and warning of the arrival of a tsunami, but to date no system exists for local de...
متن کاملHigh-frequency radar observations of ocean surface currents.
This article reviews the discovery, development, and use of high-frequency (HF) radio wave backscatter in oceanography. HF radars, as the instruments are commonly called, remotely measure ocean surface currents by exploiting a Bragg resonant backscatter phenomenon. Electromagnetic waves in the HF band (3-30 MHz) have wavelengths that are commensurate with wind-driven gravity waves on the ocean ...
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ژورنال
عنوان ژورنال: Frontiers in Marine Science
سال: 2019
ISSN: 2296-7745
DOI: 10.3389/fmars.2019.00164