Trapped low frequency waves on the Northern Israeli continental shelf

Date 2020-08-31
Author(s) Haim NirORCID1, Sara Nauri1, Kit Eliezer1, 2, Andrei Zandovsky1, 2, Toledo Yaron1
Affiliation(s) 1 : Tel-Aviv University, Israel
2 : CAMERI – Coastal and Marine Engineering Research Institute, Israel
DOI 10.17882/75643
Publisher SEANOE
Keyword(s) Stokes edge waves, Coastal Hazard, Sea level monitoring
Abstract

Time series of sea level measurements from different instruments deployed around the Haifa Bay area are analyzed. All observations indicate the existence of persistent low frequency oscillations with periods corresponding to approximately one hour and half-an-hour. These oscillations are persistent throughout most of the year and reached maximal wave heights of around 30 cm, a comparable value to tidal variations, making these oscillations an important factor in determining the average sea level elevation. The work identifies the phenomenon as resonant trapped waves which are normal modes of the continental shelf extending from Haifa promontory to Achziv Canyon. Their temporal and spatial characteristics are learned through field measurement data analysis, wavelet analysis, numerical simulations and exploration of an analytic solution. Finally, possible mechanisms for the generation of these waves are discussed.

Licence CC-BY-NC-SA
Data
File Size Format Processing Access
Instrument #3: adcp signature 1000 16 MB CSV Processed data Open access
Instrument #2: pressure gauge 15 MB CSV Processed data Open access
Instrument #1: Wave Sonic 1 GB CSV Processed data Open access
Top of the page

How to cite 

Haim Nir, Sara Nauri, Kit Eliezer, Andrei Zandovsky, Toledo Yaron (2020). Trapped low frequency waves on the Northern Israeli continental shelf. SEANOE. https://doi.org/10.17882/75643


In addition to properly cite this dataset, it would be appreciated that the following work(s) be cited too, when using this dataset in a publication :


Haim Nir, Nauri Sara, Zavadsky Andrey, Kit Eliezer, Toledo Yaron (2020). Trapped low frequency waves on the Northern Israeli continental shelf. Journal of Geophysical Research: Oceans, -. https://doi.org/10.1029/2020JC016400