{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,25]],"date-time":"2026-01-25T05:22:06Z","timestamp":1769318526748,"version":"3.49.0"},"reference-count":33,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2019,1,8]],"date-time":"2019-01-08T00:00:00Z","timestamp":1546905600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["grant number 41576021 and 41440038"],"award-info":[{"award-number":["grant number 41576021 and 41440038"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>This paper analyzes over 500 sets of internal waves in the Strait of Georgia (British Columbia, Canada) based on a large number of satellite remote sensing images. The spatial and temporal distribution of internal waves in the central region of the strait are discussed via statistical analysis. Possible generation origins of the observed internal waves are divided into three categories based on their different propagation directions and geographical locations: (1) the interaction between the narrow channels to the south of the Strait and the tidal currents, leading to the formation of mainly eastward and northward propagating waves; (2) the interaction between the tidal currents and the topography near Point Roberts, resulting in mainly westward propagating waves; (3) excitation by river plume, mainly near Fraser River mouth, leading to the formation of mainly westward waves along the direction of the river plume. The relation between the occurrence of internal waves in remote sensing images and wind or tide level is also discussed. It is found that most of the observed internal waves occur at low tides. However, due to the influence of the river, the eastward propagating internal waves near the river mouth seldom occur at the lowest tide. Also, internal waves are captured more easily by remote sensing images in summer due to the lower wind speed than winter and therefore the seasonal distribution of internal waves in remote sensing images may not be able to completely represent the real situation in the study area. Finally, combining the in situ measured data and model output data, the Benjamin-Ono equation is found to satisfyingly simulate the characteristic parameters of the studied internal waves.<\/jats:p>","DOI":"10.3390\/rs11010096","type":"journal-article","created":{"date-parts":[[2019,1,9]],"date-time":"2019-01-09T03:06:06Z","timestamp":1547003166000},"page":"96","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":18,"title":["Studies of Internal Waves in the Strait of Georgia Based on Remote Sensing Images"],"prefix":"10.3390","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0584-0239","authenticated-orcid":false,"given":"Caixia","family":"Wang","sequence":"first","affiliation":[{"name":"Physical Oceanography Laboratory, Ocean University of China, Qingdao 266100, China"}]},{"given":"Xin","family":"Wang","sequence":"additional","affiliation":[{"name":"Physical Oceanography Laboratory, Ocean University of China, Qingdao 266100, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5453-3916","authenticated-orcid":false,"given":"Jose C. B.","family":"Da Silva","sequence":"additional","affiliation":[{"name":"Department of Geosciences, Environment and Spatial Planning, University of Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2019,1,8]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"245","DOI":"10.1038\/314245a0","article-title":"Theory of radar imaging of internal waves","volume":"314","author":"Alpers","year":"1985","journal-title":"Nature"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"345","DOI":"10.1038\/320345a0","article-title":"Intensity modulation in SAR images of internal waves","volume":"320","author":"Thompson","year":"1981","journal-title":"Nature"},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Shand, J.A. (1953). Internal waves in Georgia Strait. Trans. AGU, 34.","DOI":"10.1029\/TR034i006p00849"},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Wang, C., and Pawlowicz, R. (2011). Propagation speeds of strongly nonlinear near-surface internal waves in the Strait of Georgia. J. Geophys. Res. Oceans, 116.","DOI":"10.1029\/2010JC006776"},{"key":"ref_5","doi-asserted-by":"crossref","unstructured":"Wang, C., and Pawlowicz, R. (2012). Oblique wave-wave interactions of nonlinear near-surface internal waves in the Strait of Georgia. J. Geophys. Res. Oceans, 117.","DOI":"10.1029\/2012JC008022"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"110","DOI":"10.1002\/2016JC011765","article-title":"Internal wave generation from tidal flow exiting a constricted opening","volume":"122","author":"Wang","year":"2017","journal-title":"J. Geophys. Res. Oceans"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"5706","DOI":"10.1029\/2017JC013563","article-title":"Seasonal Variability and Generation Mechanisms of Nonlinear Internal Waves in the Strait of Georgia","volume":"123","author":"Li","year":"2018","journal-title":"J. Geophys. Res. Oceans"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"173","DOI":"10.3137\/ao.450401","article-title":"The circulation and residence time of the strait of Georgia using a simple mixing-box approach","volume":"45","author":"Pawlowicz","year":"2007","journal-title":"Atmos.-Ocean"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"131","DOI":"10.1080\/07055900.2016.1138927","article-title":"Tide, Wind, and River Forcing of the Surface Currents in the Fraser River Plume","volume":"54","author":"Halverson","year":"2016","journal-title":"Atmos.-Ocean"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"52","DOI":"10.1063\/1.3128495","article-title":"Buoyancy Effects in Fluids","volume":"27","author":"Turner","year":"1974","journal-title":"Phys. Today"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"455","DOI":"10.1029\/JC083iC01p00455","article-title":"The effect of internal waves on surface wind waves 2. Theoretical analysis","volume":"83","author":"Hughes","year":"1978","journal-title":"J. Geophys. Res."},{"key":"ref_12","doi-asserted-by":"crossref","unstructured":"Soontiens, N., Allen, S., Latornell, D., Le Souef, K., Machuca, I., Paquin, J.P., Lu, Y., Thompson, K., and Korabel, V. (2016). Storm surges in the Strait of Georgia simulated with a regional model. Atmos.-Ocean, 54.","DOI":"10.1080\/07055900.2015.1108899"},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"17","DOI":"10.1016\/j.ocemod.2017.02.008","article-title":"Modelling sensitivities to mixing and advection in a sill-basin estuarine system","volume":"112","author":"Soontiens","year":"2017","journal-title":"Ocean Model."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"293","DOI":"10.1080\/07055900.2017.1389689","article-title":"Advection, Surface Area, and Sediment Load of the Fraser River Plume Under Variable Wind and River Forcing","volume":"55","author":"Pawlowicz","year":"2017","journal-title":"Atmos.-Ocean"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"559","DOI":"10.1017\/S002211206700103X","article-title":"Internal waves of permanent form in fluids of great depth","volume":"29","author":"Benjamin","year":"1967","journal-title":"J. Fluid Mech."},{"key":"ref_16","first-page":"52","article-title":"Long Non-Linear Waves in Fluid Flows","volume":"45","author":"Benney","year":"1966","journal-title":"Stud. Appl. Math."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"L225","DOI":"10.1088\/0305-4470\/10\/12\/002","article-title":"Solitary waves in a finite depth fluid","volume":"10","author":"Joseph","year":"1977","journal-title":"J. Phys. A Math. Gen."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"157","DOI":"10.2514\/3.63127","article-title":"Weakly-Nonlinear, Long Internal Gravity Waves in Stratified Fluids of Finite Depth","volume":"12","author":"Kubota","year":"1978","journal-title":"J. Hydronaut."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"1082","DOI":"10.1143\/JPSJ.39.1082","article-title":"Algebraic Solitary Waves in Stratified Fluids","volume":"39","author":"Ono","year":"1975","journal-title":"J. Phys. Soc. Jpn."},{"key":"ref_20","first-page":"151","article-title":"Topographic Effects in Stratified Flows","volume":"77","author":"Baines","year":"1995","journal-title":"Eos Trans. Am. Geophys. Union"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"689","DOI":"10.1007\/s10872-011-0073-9","article-title":"Derivation of internal solitary wave amplitude in the South China Sea deep basin from satellite images","volume":"67","author":"Chen","year":"2011","journal-title":"J. Oceanogr."},{"key":"ref_22","doi-asserted-by":"crossref","unstructured":"Rascle, N., Nouguier, F., Chapron, B., Mouche, A., and Ponte, A. (2016). Surface Roughness Changes by Finescale Current Gradients: Properties at Multiple Azimuth View Angles. J. Phys. Oceanogr., 46.","DOI":"10.1175\/JPO-D-15-0141.1"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"139","DOI":"10.1029\/RS010i002p00139","article-title":"Microwave scattering and the straining of wind-generated waves","volume":"10","author":"Keller","year":"1975","journal-title":"Radio Sci."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"10529","DOI":"10.1029\/JC089iC06p10529","article-title":"A theory of the imaging mechanism of underwater bottom topography by real and synthetic aperture radar","volume":"89","author":"Alpers","year":"1984","journal-title":"J. Geophys. Res. Oceans"},{"key":"ref_25","doi-asserted-by":"crossref","unstructured":"Kudryavtsev, V.N., Akimov, D., Johannessen, J.A., and Chapron, B. (2005). On radar imaging of current features. Part 1: Model and comparison with observations. J. Geophys. Res. Oceans, 110.","DOI":"10.1029\/2004JC002505"},{"key":"ref_26","doi-asserted-by":"crossref","unstructured":"Plant, W.J., Keller, W.C., Hayes, K., Chatham, G., and Lederer, N. (2010). Normalized radar cross section of the sea for backscatter: 2. Modulation by internal waves. J. Geophys. Res. Oceans, 115.","DOI":"10.1029\/2009JC006079"},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"583","DOI":"10.1175\/JTECH1731.1","article-title":"A Modified Beam-to-Earth Transformation to Measure Short-Wavelength Internal Waves with an Acoustic Doppler Current Profiler","volume":"22","author":"Scotti","year":"2005","journal-title":"J. Atmos. Ocean. Technol."},{"key":"ref_28","unstructured":"Wang, C. (2009). Geophysical Observations of Nonlinear Internal Solitary-like Waves in the Strait of Georgia. [Ph.D. Thesis, University of British Columbia]."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"22","DOI":"10.1175\/1520-0485(1990)020<0374:ASOIWP>2.0.CO;2","article-title":"A study of internal wave propagation in the Strait of Gibraltar using shore-based marine radar images","volume":"20","author":"Watson","year":"1990","journal-title":"J. Phys. Oceanogr."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"20","DOI":"10.1175\/1520-0485(1991)021<0185:ANMOIW>2.0.CO;2","article-title":"A numerical model of internal wave refraction in the Strait of Gibraltar","volume":"21","author":"Watson","year":"1991","journal-title":"J. Phys. Oceanogr."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"400","DOI":"10.1038\/nature03936","article-title":"River plumes as a source of large-amplitude internal waves in the coastal ocean","volume":"437","author":"Nash","year":"2005","journal-title":"Nature"},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"30039","DOI":"10.1029\/1999JC900092","article-title":"On the determination of characteristics of the interior ocean dynamics from radar signatures of internal solitary waves","volume":"104","author":"Brandt","year":"1999","journal-title":"J. Geophys. Res. Oceans"},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"8009","DOI":"10.1029\/97JC02724","article-title":"Role of surface films in ERS SAR signatures of internal waves on the shelf: 1. Short-period internal waves","volume":"103","author":"Ermakov","year":"1998","journal-title":"J. Geophys. Res. 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