Results 11 to 20 of about 176,740 (162)

Surface reverberation based on small-slope approximation in deep water [PDF]

Acta Physica Sinica, 2021
For the reverberation experiments with a near surface source or receiver, surface reverberation arriving first after source signal is not influenced by bottom reverberation due to time-delay difference of acoustic multipath in deep water. A surface reverberation model is proposed in the paper.
Li-Jun Yin, Jin-Rong Wu, Qian-Nan Hou, Li Ma   +3 more
openaire   +1 more source

EFFECT OF SURFACE IRRIGATION METHODS AND LAND LEVELING PRACTICES ON COTTON YIELD AND IRRIGATION PERFORMANCES AT NORTH DELTA [PDF]

Journal of Soil Sciences and Agricultural Engineering, 2007
Two field trials were conducted at Sakha Agricultural Research Station during the two successive growing seasons 2004 and 2005 to study the impact of three methods of surface irrigation which are: 1 Short furrows, 2- Long furrows and 3- border irrigation,
M.A. El-Faiad, M.M. Saied, E.M. El Hadidi, H.A. Sonbol   +3 more
doaj   +1 more source

Numerical Analysis of Instability Mechanism of a High Slope under Excavation Unloading and Rainfall

Applied Sciences, 2022
High slope simulation analysis is an essential means of slope engineering design, construction, and operation management. It is necessary to master slope dynamics, ensure slope safety, analyze slope instability mechanisms, and carry out slope stability ...
Manli Qu, Faning Dang
doaj   +1 more source

Advancing Field-Based GNSS Surveying for Validation of Remotely Sensed Water Surface Elevation Products

Frontiers in Earth Science, 2020
To advance monitoring of surface water resources, new remote sensing technologies including the forthcoming Surface Water and Ocean Topography (SWOT) satellite (expected launch 2022) and its experimental airborne prototype AirSWOT are being developed to ...
Lincoln H. Pitcher, Lincoln H. Pitcher, Laurence C. Smith, Laurence C. Smith, Sarah W. Cooley, Annie Zaino, Robert Carlson, Joseph Pettit, Colin J. Gleason, J. Toby Minear, Jessica V. Fayne, Michael J. Willis, Jasmine S. Hansen, Kelly J. Easterday, Merritt E. Harlan, Theodore Langhorst, Simon N. Topp, Wayana Dolan, Ethan D. Kyzivat, Al Pietroniro, Philip Marsh, Daqing Yang, Tom Carter, Cuyler Onclin, Nasim Hosseini, Evan Wilcox, Daniel Moreira, Muriel Berge-Nguyen, Jean-Francois Cretaux, Tamlin M. Pavelsky   +29 more
doaj   +1 more source

Hydraulic river models from ICESat-2 elevation and water surface slope

Water Resources Research, 2023
Forecasting flood and drought events requires accurate modeling tools. Hydraulic river models are based on estimates of riverbed geometry which are traditionally collected in-situ. The novel Ice, Cloud and Land Elevation Satellite 2 [ICESat-2] lidar altimetry mission with 6 simultaneous high-resolution laser beams provides the opportunity to define ...
Musaeus, Aske Folkmann, Kittel, Cécile Marie Margaretha, Luchner, Jakob, Frias, Monica Coppo, Bauer‐Gottwein, Peter   +4 more
openaire   +3 more sources

Three-Dimensional Stability of Unsaturated Excavation Slopes Under Different Seepage Conditions: A Case Study

Frontiers in Earth Science, 2022
Three-dimensional stability analysis of soil slopes remains a hot topic in the field of geotechnical engineering. Considering the fluid–solid coupling effect, this study performs a number of numerical analyses on the stability of a 3D excavation slope ...
Long Wang, Long Wang, Long Wang, Long Wang, Hu Deng, Meijuan Xu, Meijuan Xu, Zhihua Li, Yuanhang Nie, Qiuxia Huang, Wei Tang   +10 more
doaj   +1 more source

Contours of slopes of a rippled water surface

Optics Express, 2011
The appearance of a horizontal array of linear lamps below the water surface when viewed from above is approximately in the form of contours of one component of the water surface slope. The degree of approximation is a fraction of one percent when this method is used to describe the slopes of a wind ruffled surface.
Charles, Cox, Xin, Zhang
openaire   +2 more sources

On alpha stable distribution of wind driven water surface wave slope [PDF]

Chaos: An Interdisciplinary Journal of Nonlinear Science, 2008
We propose a new formulation of the probability distribution function of wind driven water surface slope with an α-stable distribution probability. The mathematical formulation of the probability distribution function is given under an integral formulation.
Joelson, Maminirina, Néel, Marie-Christine   +1 more
openaire   +5 more sources

Rainfall infiltration process of multi-layer slope based on improved Green-Ampt model stability analysis

Shuiwen dizhi gongcheng dizhi, 2022
Under the effect of rainfall, the saturation and water content of slope soil increase, while the matric suction decreases. With the increasing rainfall duration, rainwater infiltration depth has an effect on slope stability.
Yixiang SONG, Zihang YIN, Da HUANG
doaj   +1 more source

Wind-forced depth-dependent currents over the eastern Beaufort Sea continental slope: Implications for Pacific water transport

Elementa: Science of the Anthropocene, 2018
Pacific water contributes significantly to the Arctic Ocean freshwater budget. Recent increases in Arctic freshwater flux, also affected by the Pacific-derived Arctic water, impact the Atlantic overturning circulation with implications for global climate.
Igor A. Dmitrenko, Sergei A. Kirillov, Paul G. Myers, Alexandre Forest, Bruno Tremblay, Jennifer V. Lukovich, Yves Gratton, Søren Rysgaard, David G. Barber   +8 more
doaj   +1 more source