منابع مشابه
HF Radar Sea-echo from Shallow Water
HF radar systems are widely and routinely used for the measurement of ocean surface currents and waves. Analysis methods presently in use are based on the assumption of infinite water depth, and may therefore be inadequate close to shore where the radar echo is strongest. In this paper, we treat the situation when the radar echo is returned from ocean waves that interact with the ocean floor. S...
متن کاملMethods for the extraction of longperiod ocean wave parameters from narrow beam HF radar sea echo
This paper describes inversion methods for HF radar sea echo Doppler spectra, giving parameters of the ocean wave spectrum in the important long-wavelength region. Radar spectra exhibiting very narrow spikes in the higher-order structure adjacent to the first-order lines are indicative of ocean wave components with a single dominant wavelength. In the simplest method of interpretation these com...
متن کاملHF radar technology in the Sea of Okhotsk
In order to monitor variations in the Soya Warm Current (SWC), three high frequency (HF) radar stations were installed around the Soya Strait in August 2003. The radar covers a range of approximately 70 km from the coast. Comparisons of the observed current velocity with drifting buoy and shipboard ADCP data showed good agreement with root-mean-square differences of 20 cm/s. It is shown that th...
متن کاملFrom Offshore to Onshore: Multiple Origins of Shallow-Water Corals from Deep-Sea Ancestors
Shallow-water tropical reefs and the deep sea represent the two most diverse marine environments. Understanding the origin and diversification of this biodiversity is a major quest in ecology and evolution. The most prominent and well-supported explanation, articulated since the first explorations of the deep sea, holds that benthic marine fauna originated in shallow, onshore environments, and ...
متن کاملShallow - Water Tracking in the Sea of Nazaré
In the summer of 1996, an experiment was conducted off the coast of Portugal to study the effects of internal tides on sound propagation. This experiment—called INTIMATE '96 (Internal Tide Investigation by Means of Acoustic Tomography Experiment)—has provided a great deal of insight about the variability of pulse transmission over space and time. In contrast to a common view of shallow-water pr...
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ژورنال
عنوان ژورنال: Sensors
سال: 2008
ISSN: 1424-8220
DOI: 10.3390/s8084611