Articles by Sagi Knobler

@article{10.1175/JTECH-D-19-0011.1b,
title = {Detection of Breaking Waves in Single Wave Gauge Records of Surface Elevation Fluctuations},
author = {Dan Liberzon and Alexandru Vreme and Sagi Knobler and Itamar Bentwich},
url = {https://doi.org/10.1175/JTECH-D-19-0011.1},
doi = {10.1175/JTECH-D-19-0011.1},
issn = {0739-0572},
year = {2019},
date = {2019-01-01},
journal = {Journal of Atmospheric and Oceanic Technology},
volume = {36},
number = {9},
pages = {1863-1879},
abstract = {We report the development of a new method for accurate detection of breaking water waves that addresses the need for an accurate and cost-effective method that is independent of human decisions. The new detection method, which enables the detection of breakers using only surface elevation fluctuation measurements from a single wave gauge, supports the development of a new method for research relating to water waves and wind–wave interactions. According to the proposed method, detection is based on the use of the phase-time method to identify breaking-associated patterns in the instantaneous frequency variations of surface elevation fluctuations. A wavelet-based pattern recognition algorithm is devised to detect such patterns and provide accurate detection of breakers in the examined records. Validation and performance tests, conducted using both laboratory and open-sea data, including mechanically generated and wind-forced waves, are reported as well. These tests allow us to derive a set of parameters that assure high detection accuracy rates. The method is shown to be capable to achieve a positive detection rate exceeding 90%.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}