期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
Experimental analysis of infragravity waves in two eroded microtidal beaches 被引量:1
1
作者 MARIO Conde-Frias LUIS Otero JUAN Camilo Restrepo JUAN Carlos Ortiz 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2017年第5期31-43,共13页
This work aims to contribute to the characterization and understanding ofinfragravity waves on two beaches with erosion problems. For this reason, we have used an array of ADCP and a pressure sensor to measure wave pa... This work aims to contribute to the characterization and understanding ofinfragravity waves on two beaches with erosion problems. For this reason, we have used an array of ADCP and a pressure sensor to measure wave parameters and pressure inside and outside of the surf zone during the dry and rainy period in the beaches of Galerazamba and Manzanillo del Mar (both dissipative and eroded beaches) located in the Colombian Caribbean coast. Based on these measurements, we have carried out a spectral analysis in order to identify the frequency components that characterize the wave and its energy; thus, we identified the characteristic frequencies of iufragravity waves to finally filter the infragravity signal on each beach in different seasonal periods. Among the results of the Welch spectrum applied to surface elevation time series, we found that, the frequencies' energy of the sea-swell band decreases due to bottom friction and wave breaking as the wave approaches the shore, while the frequencies' energy of the infragravity band increases significantly. In addition, for the wavelet analysis, we could observe how the energy of the infragravity band, especially the lowest frequencies gain energy as the waves approaches the coast. Furthermore, based on the infragravity wave obtained from the extreme wave event registered during the field campaign we can conclude that the contribution of this signal is important in the erosion problems presented in the beaches of Galerazamba and Manzanillo del Mar. Finally, these results show the need to realize other studies that allow us to understand deeply, the role of infragravity waves on the morphological changes that occurs in these beaches. 展开更多
关键词 infragravity waves long waves experimental analysis fourier analysis wavelet transform
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部