Bibliografías temáticas / Coastal observations

Literatura académica sobre el tema "Coastal observations"

Autor: Grafiati

Publicado: 6 de julio de 2024

Crea una cita precisa en los estilos APA, MLA, Chicago, Harvard y otros

Elija tipo de fuente:

Consulte las listas temáticas de artículos, libros, tesis, actas de conferencias y otras fuentes académicas sobre el tema "Coastal observations".

Junto a cada fuente en la lista de referencias hay un botón "Agregar a la bibliografía". Pulsa este botón, y generaremos automáticamente la referencia bibliográfica para la obra elegida en el estilo de cita que necesites: APA, MLA, Harvard, Vancouver, Chicago, etc.

También puede descargar el texto completo de la publicación académica en formato pdf y leer en línea su resumen siempre que esté disponible en los metadatos.

Artículos de revistas sobre el tema "Coastal observations":

Muscarella, Philip, Kelsey Brunner y David Walker. "Estimating Coastal Winds by Assimilating High-Frequency Radar Spectrum Data in SWAN". Sensors 21, n.º 23 (24 de noviembre de 2021): 7811. http://dx.doi.org/10.3390/s21237811.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Resumen

Many activities require accurate wind and wave forecasts in the coastal ocean. The assimilation of fixed buoy observations into spectral wave models such as SWAN (Simulating Waves Nearshore) can provide improved estimates of wave forecasts fields. High-frequency (HF) radar observations provide a spatially expansive dataset in the coastal ocean for assimilation into wave models. A forward model for the HF Doppler spectrum based on first- and second-order Bragg scattering was developed to assimilate the HF radar wave observations into SWAN. This model uses the spatially varying wave spectra computed using the SWAN model, forecast currents from the Navy Coastal Ocean Model (NCOM), and system parameters from the HF radar sites to predict time-varying range-Doppler maps. Using an adjoint of the HF radar model, the error between these predictions and the corresponding HF Doppler spectrum observations can be translated into effective wave-spectrum errors for assimilation in the SWAN model for use in correcting the wind forcing in SWAN. The initial testing and validation of this system have been conducted using data from ten HF radar sites along the Southern California Bight during the CASPER-West experiment in October 2017. The improved winds compare positively to independent observation data, demonstrating that this algorithm can be utilized to fill an observational gap in the coastal ocean for winds and waves.

Moses, C. A. "Observations on coastal biokarst, Hells Gate, Lord Howe Island, Australia". Zeitschrift für Geomorphologie 47, n.º 1 (19 de marzo de 2003): 83–100. http://dx.doi.org/10.1127/zfg/47/2003/83.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Heron, M. L., A. Prytz, S. F. Heron, T. Helzel, T. Schlick, D. J. M. Greenslade, E. Schulz y W. J. Skirving. "Tsunami observations by coastal ocean radar". International Journal of Remote Sensing 29, n.º 21 (23 de octubre de 2008): 6347–59. http://dx.doi.org/10.1080/01431160802175371.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Heiblum, R. H., I. Koren y O. Altaratz. "Analyzing coastal precipitation using TRMM observations". Atmospheric Chemistry and Physics 11, n.º 24 (21 de diciembre de 2011): 13201–17. http://dx.doi.org/10.5194/acp-11-13201-2011.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Resumen

Abstract. The interaction between breezes and synoptic gradient winds, and surface friction increase in transition from sea to land can create persistent convergence zones nearby coastlines. The low level convergence of moist air promotes the dynamical and microphysical processes responsible for the formation of clouds and precipitation. Our work focuses on the winter seasons of 1998–2011 in the Eastern Mediterranean. During the winter the Mediterranean sea is usually warmer than the adjacent land, resulting in frequent occurrence of land breeze that opposes the common synoptic winds. Using rain-rate vertical profiles from the Tropical Rainfall Measurement Mission (TRMM) satellite, we examined the spatial and temporal distribution of average hydrometeor mass in clouds as a function of the distance from coastlines. Results show that coastlines in the Eastern Mediterranean are indeed favored areas for precipitation formation. The intra-seasonal and diurnal changes in the distribution of hydrometeor mass indicate that the land breeze may likely be the main responsible mechanism behind our results.

Gorshunov, M. B. "USING OF POWERED PARAGLIDER IN THE TAUISKAYA GUBA BAY, THE OKHOTSK SEA, FOR LOCAL AIREAL SURVEYS AND OBSERVATIONS ON EARLESS SEALS". Izvestiya TINRO 197 (5 de julio de 2019): 143–47. http://dx.doi.org/10.26428/1606-9919-2019-197-143-147.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Resumen

Powered paraglider using for local aerial surveys and observations on real seals is described in combination with routine watch from the coastal observation point and motor boat. The results of conventional and combined observations are compared.

Tomić, Matea y Ole Baltazar Andersen. "ICESat-2 for Coastal MSS Determination—Evaluation in the Norwegian Coastal Zone". Remote Sensing 15, n.º 16 (10 de agosto de 2023): 3974. http://dx.doi.org/10.3390/rs15163974.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Resumen

Radar satellite altimeters enable the determination of the mean sea surface to centimeter accuracy, which can be degraded in coastal areas because of the lack of valid altimetry observations due to land contamination and the altimeter footprint size. In 2018, the National Aeronautics and Space Administration launched ICESat-2, a laser altimetry mission equipped with the Advanced Topographic Laser Altimeter System, providing measurements every 0.7 m in the along-track direction. Taking into account the complexity of the Norwegian coastline, this study aims to evaluate coastal observations from ICESat-2 in order to use it to update the existing mean sea surface for Norway, NMBU18. We, therefore, determined the mean sea surface using only ICESat-2 observations and compared it with mean sea level observations from 23 permanent tide gauges along the entire coast and 21 temporary tide gauges in Norway’s largest and deepest fjord, Sognefjorden. We also included two global mean sea surface models and NMBU18 for comparison. The results have shown that ICESat-2 is indeed able to provide more valid observations in the coastal zone, which can be used to improve the mean sea surface model, especially along the coast.

Korotaev, G. K., V. L. Dorofeev, S. V. Motyzhev, V. N. Belokopytov, A. Palazov, V. Malciu, A. Zatsepin et al. "Contribution of the Black Sea observing system to ECOOP". Ocean Science Discussions 8, n.º 4 (11 de julio de 2011): 1695–722. http://dx.doi.org/10.5194/osd-8-1695-2011.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Resumen

Abstract. Regular observations in the Black Sea basin started in the past century, and quite good multidisciplinary observing system operated in the 70–80ies based on the ship observations. Modern oceanographic observing system in the basin is built according to the GOOS principles. It includes space remote sensing observations, data of free floating buoys and costal observational network. Integration of the observing system and its real-time operation were started within the framework of the FP5 ARENA project and later were improved during the FP6 ASCABOS project. The coastal observing system which includes time series from the coastal platforms and multidisciplinary surveys of the coastal areas fulfilled by the research vessels was set up during the ECOOP. Paper describes all components of the Black Sea observing system operated during the ECOOP project and its applications in the framework of the project.

Nencioli, Francesco y Graham D. Quartly. "Evaluation of Sentinel-3A Wave Height Observations Near the Coast of Southwest England". Remote Sensing 11, n.º 24 (13 de diciembre de 2019): 2998. http://dx.doi.org/10.3390/rs11242998.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Resumen

Due to the smaller ground footprint and higher spatial resolution of the Synthetic Aperture Radar (SAR) mode, altimeter observations from the Sentinel-3 satellites are expected to be overall more accurate in coastal areas than conventional nadir altimetry. The performance of Sentinel-3A in the coastal region of southwest England was assessed by comparing SAR mode observations of significant wave height against those of Pseudo Low Resolution Mode (PLRM). Sentinel-3A observations were evaluated against in-situ observations from a network of 17 coastal wave buoys, which provided continuous time-series of hourly values of significant wave height, period and direction. As the buoys are evenly distributed along the coast of southwest England, they are representative of a broad range of morphological configurations and swell conditions against which to assess Sentinel-3 SAR observations. The analysis indicates that SAR observations outperform PLRM within 15 km from the coast. Within that region, regression slopes between SAR and buoy observations are close to the 1:1 relation, and the average root mean square error between the two is 0.46 ± 0.14 m. On the other hand, regression slopes for PLRM observations rapidly deviate from the 1:1 relation, while the average root mean square error increases to 0.84 ± 0.45 m. The analysis did not identify any dependence of the bias between SAR and in-situ observation on the swell period or direction. The validation is based on a synergistic approach which combines satellite and in-situ observations with innovative use of numerical wave model output to help inform the choice of comparison regions. Such an approach could be successfully applied in future studies to assess the performance of SAR observations over other combinations of coastal regions and altimeters.

Vihma, Timo, Petteri Uotila, Stein Sandven, Dmitry Pozdnyakov, Alexander Makshtas, Alexander Pelyasov, Roberta Pirazzini et al. "Towards an advanced observation system for the marine Arctic in the framework of the Pan-Eurasian Experiment (PEEX)". Atmospheric Chemistry and Physics 19, n.º 3 (13 de febrero de 2019): 1941–70. http://dx.doi.org/10.5194/acp-19-1941-2019.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Resumen

Abstract. The Arctic marine climate system is changing rapidly, which is seen in the warming of the ocean and atmosphere, decline of sea ice cover, increase in river discharge, acidification of the ocean, and changes in marine ecosystems. Socio-economic activities in the coastal and marine Arctic are simultaneously changing. This calls for the establishment of a marine Arctic component of the Pan-Eurasian Experiment (MA-PEEX). There is a need for more in situ observations on the marine atmosphere, sea ice, and ocean, but increasing the amount of such observations is a pronounced technological and logistical challenge. The SMEAR (Station for Measuring Ecosystem–Atmosphere Relations) concept can be applied in coastal and archipelago stations, but in the Arctic Ocean it will probably be more cost-effective to further develop a strongly distributed marine observation network based on autonomous buoys, moorings, autonomous underwater vehicles (AUVs), and unmanned aerial vehicles (UAVs). These have to be supported by research vessel and aircraft campaigns, as well as various coastal observations, including community-based ones. Major manned drifting stations may occasionally be comparable to terrestrial SMEAR flagship stations. To best utilize the observations, atmosphere–ocean reanalyses need to be further developed. To well integrate MA-PEEX with the existing terrestrial–atmospheric PEEX, focus is needed on the river discharge and associated fluxes, coastal processes, and atmospheric transports in and out of the marine Arctic. More observations and research are also needed on the specific socio-economic challenges and opportunities in the marine and coastal Arctic, and on their interaction with changes in the climate and environmental system. MA-PEEX will promote international collaboration; sustainable marine meteorological, sea ice, and oceanographic observations; advanced data management; and multidisciplinary research on the marine Arctic and its interaction with the Eurasian continent.

Whitney, Michael M. y Richard W. Garvine. "Simulating the Delaware Bay Buoyant Outflow: Comparison with Observations". Journal of Physical Oceanography 36, n.º 1 (1 de enero de 2006): 3–21. http://dx.doi.org/10.1175/jpo2805.1.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Resumen

Abstract Coastal buoyant outflows from rivers and estuaries previously have been studied with field research, laboratory experiments, and numerical models. There is a dire need to evaluate model performance in light of coastal current observations. This research simulates the Delaware Bay outflow and compares results with observations of estuarine and shelf conditions. Observations include an estuarine salinity climatology, a record of freshwater delivery to the shelf, coastal current salinity mappings, and surface drifter data. Simulation efforts focus on spring 1993 and spring 1994, the primary field study period. The simulation is forced with river discharge, winds, and tides; only tidal-averaged results are discussed. Estuarine salinity results are consistent with the observed lateral salinity pattern, vertical structure, and response to river discharge. Salinities within the lower bay agree with observations, but the simulation overestimates the along-estuary salinity gradient. Observed and simulated freshwater delivery exhibit the same amplitude of response to river discharge and winds. The simulation produces a buoyant outflow that is generally consistent with the observed buoyancy signature, width, length, and vertical structure over a variety of river discharge and wind conditions. The simulated coastal current, however, tends to be somewhat shorter and fresher than observed. Simulated surface drifter paths exhibit the observed onshore advection during downwelling winds as well as offshore transport and current reversals during upwelling winds. A statistical evaluation based on shelf salinity mappings indicates that the model reproduces the observed variance and has only a small bias (less than 10% of plume buoyancy signature). The rms error of 1.2 psu is linked to the shorter and fresher nature of the simulated coastal current. Observational comparisons discussed in this paper indicate that the model can simulate many coastal current features and its response to river discharge and wind forcing.

Más fuentes

Tesis sobre el tema "Coastal observations":

Haynes, Ronald. "Eulerian and Lagrangian observations in the Iberian coastal transition zone". Thesis, Bangor University, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358594.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Earlie, Claire Siobhan. "Field observations of wave induced coastal cliff erosion, Cornwall, UK". Thesis, University of Plymouth, 2015. http://hdl.handle.net/10026.1/3526.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Resumen

Coastal cliff erosion is a widespread problem that threatens property and infrastructure along many of the world’s coastlines. The management of this risk calls for robust quantification of cliff erosion rates, which are often difficult to obtain along rocky coasts. Quantification of sea-cliff rates of retreat on annual to decadal time scales has typically been limited to rapidly eroding soft rock coastlines. Rates of erosion used for shoreline management in the UK are generally based on analysis of historic maps and aerial photographs which, in rocky coast environments, does not wholly capture the detail and timing at which the processes operate and the failures occur across the cliff face. The first stage of this study uses airborne LiDAR (Light Detection and Ranging) data at nine sites around a rocky coastline (Cornwall, UK) to gain a quantitative understanding of cliff erosion where average recession rates are relatively low (c. 0.1 m yr-1). It was found that three-dimensional volumetric changes on the cliff face and linear rates of retreat can be reliably calculated from consecutive digital elevation models (DEMs) several years apart. Rates of erosion ranged between 0.03–0.3 m yr-1. The spatial variability in recession rates was considered in terms of the relationship with the varying boundary conditions (rock mass characteristics, cliff geometries, beach morphology) and forcing parameters (wave climate and wave exposure). Recession rates were statistically correlated with significant wave height (Hs), rock mass characteristics (GSI) and the ratio between the two (GSI/Hs). Although the rates derived using airborne LiDAR are comparable to the longer term rates of retreat, the detail of erosion to the cliff-face provides additional insight into the processes occurring in slowly eroding environments, which are vital for understanding the failure of harder rock coastlines. In addition to this, the importance of the wave climate and rainfall needs further attention on a more localised scale. Monthly cliff face volume changes, at two particularly vulnerable sites (Porthleven and Godrevy, Cornwall, UK), were detected using a Terrestrial Laser Scanner (TLS). Using these volumes alongside information on beach profile, beach- cliff junction elevation changes and nearshore hydrodynamics have allowed an insight into how the cliffs respond to seasonal fluctuations in wave climate and beach morphology. Monthly variability in beach morphology between the two sites over a one-year survey period i indicated the influence that beach slope and the elevation of the beach-cliff junction have on the frequency of inundation and the power of wave-cliff impacts. Failure mechanisms between the two sites ranged from rotational sliding of superficial material to quarrying and block removal over the entire cliff elevation, according to the extent of wave-cliff interaction. This particular survey period highlighted the sensitivity of cliff erosion to the variability in wave climate and beach morphology at two different locations in the south-west of the UK, where the vast majority (over 85% of the annual value) of cliff face erosion occurs during the winter when extreme storm waves prevail. Coastal cliff erosion from storm waves is observed worldwide but the processes are notoriously difficult to measure during extreme storm wave conditions when most erosion normally occurs, limiting our understanding of cliff processes. Over January-March 2014, during the largest Atlantic storms in at least 60 years with deep water significant wave heights of 6 – 8 m, cliff-top ground motions of a rocky cliff in the south-west of the UK (Porthleven, Cornwall) showed vertical ground displacements in excess of 50–100 μm; an order of magnitude larger than observations made previously. Repeat terrestrial laser scanner surveys, over a 2-week period encompassing the extreme storms, gave a cliff face volume loss 2 orders of magnitude larger than the long-term erosion rate. Cliff-top ground motions and erosion volumes were compared at two different locations, one a reflective beach with steeply shelving bathymetry (Porthleven, Cornwall) and the other an intermediate, low tide bar-rip beach with a wide coastal slope (Godrevy, Cornwall). Under similar wave conditions (6–8 m Hs and 15–20 s. Tp) the vertical ground motions were an order of magnitude greater at the cliffs fronted by steeply shelving bathymetry, where the breaking waves plunge right at the shoreline, with little prior dissipation, leading to large energetic runup impacting the cliff. These storm results imply that erosion of coastal cliffs exposed to extreme storm waves is highly episodic and that long-term rates of cliff erosion will depend on the frequency and severity of extreme storm wave impacts as well as the wave dissipation that occurs as a function of the nearshore bathymetry. Having recorded microseismic cliff-top motion on this scale for the first time and determined an effective method of monitoring the energetic wave impacts, this study emphasises how investigations of cliff behaviour during storms is not only obtainable, but paramount to understanding coastal evolution under extreme conditions.

Jiang, Lide. "A comprehensive study on coastal upwelling using observations, models and proxies". Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 140 p, 2008. http://proquest.umi.com/pqdweb?did=1654491231&sid=5&Fmt=2&clientId=8331&RQT=309&VName=PQD.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Yang, Bo. "Field Observations and Novel Methodologies for Carbon System Assessments in Coastal Waters". Scholar Commons, 2015. http://scholarcommons.usf.edu/etd/5804.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Resumen

Coastal zones receive massive terrestrial inputs of nutrients and organic matter, and play an important role in biogeochemical cycles. The interactions of river inputs, ocean currents, atmospheric exchanges, anthropogenic influences, and biologically active ecosystems make CO2 system studies in coastal waters highly challenging. This work focuses on improving our understanding of the CO2 system in coastal waters through (1) development of a new methodology for measurements of CO2 system parameters in the field; (2) observations of large spatial and temporal CO2 system variations in coastal waters; and (3) characterization of the influence of organics on CO2 system behavior in coastal waters. A novel portable light-emitting-diode (LED) photometer was developed to provide low-cost seawater pH measurements in the field. With meta cresol purple (mCP) as the indicator, the photometer produces pHT measurements within ± 0.01 units of state-of-the-art spectrophotometric measurements (7.6 ≤ pH ≤ 8.2, 30 ≤ S ≤ 36.2, and 15 oC ≤ t ≤ 30 oC). With a simple “do-it-yourself” (DIY) construction design, a hundredfold reduction in cost relative to benchtop spectrophotometric systems, and routine calibration-free operation in the field, the DIY photometer is an ideal replacement for pH test strips or consumer-level potentiometric probes. Applications of special interest include education, citizen science, coastal zone monitoring, and aquaculture and aquarium management. Subannual variability of total alkalinity (TA) distributions in the northeastern Gulf of Mexico (GOM) was examined through the use of TA data from ship-based water sampling, historical records of riverine TA, and contemporaneous model output of surface currents and salinity. Variability of TA observed in the upper 150 m of the GOM water column was primarily controlled by subannual variations in the extent of mixing between seawater and river water. A transition in TA distribution patterns between the river-dominated northern margin (near the Mississippi–Atchafalaya River System) and the ocean current-dominated eastern margin (West Florida Shelf) was observed. A riverine alkalinity input index was developed to highlight riverine TA contributions. Contributions of organic alkalinity (Org-Alk) to TA were investigated in coastal waters from three different environments (estuary, urban, mangrove) and offshore sites in the Gulf of Mexico. The difference in alkalinity (∆TA) between TA measured by direct titration (TAmeas) and calculated (TAcal) from observations of DIC and pH was used as an estimate of Org-Alk. Average values of ∆TA were 0.1 ± 5.0 µmol kg-1 at coastal sample sites outside the Mississippi-Atchafalaya River Estuary (n = 17), 1.9 ± 5.2 µmol kg-1 in offshore waters (n = 14) in the northern Gulf of Mexico, 33.6 ± 18.0 µmol kg-1 in the Suwannee River Estuary (n = 17), and 16.0 ± 25.4 µmol kg-1 in sites that included Tampa Bay, the Caloosahatchee River, and the Ten Thousand Islands area (n = 55). In addition to Org-Alk assessments based on measurements of ∆TA, a novel two-step spectophotometric titration method was developed for the characterization of Org-Alk. Direct titrations showed substantial Org-Alk in coastal samples (n = 5), and the Org-Alk values obtained from the two-step titrations showed good agreement with results from ∆TA calculations. The spectrophotometric titration data were used in model fits to evaluate the dissociation constants (pKi) of the natural organic acids. The pKi of the organic acids were within the previously reported range for riverine fulvic acids.

Furst, Jonathan Joseph. "An Investigation of Vertical Turbulent Transport Processes in Coastal Regions Using Tower Observations". FIU Digital Commons, 2013. http://digitalcommons.fiu.edu/etd/814.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Resumen

High-resolution tower observations of turbulent transport processes in the coastal atmospheric surface layer show that the exchange coefficients for momentum, enthalpy, and moisture behave differently for different environmental and atmospheric conditions. The drag coefficient is closely tied to wind speed and turbulent intensity. The exchange coefficient for enthalpy shows a dependence on stability. Analysis of the turbulent kinetic energy budget yields a new parameterization framework that well explains the observed variation of the drag coefficient, particularly at low wind speeds.

Stenlid, Aron. "Cloud Observations at a Coastal site – Analysis of Ceilometer Measurements from Östergarnsholm, Sweden". Thesis, Uppsala universitet, Luft-, vatten och landskapslära, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-380863.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Resumen

In this study, four and a half months of ceilometer data from Östergarnsholm are used to analyze cloud related to processes in the boundary layer. Measurements are divided into two categories, which are defined by wind direction: a continental and a marine sector. The results show that there are significant differences in the height of the lowest cloud bases detected for the two sectors, where cloud base heights are lower for the marine wind sector during unstable and neutral conditions. The ceilometer’s ability to detect several cloud base heights simultaneously is utilized to test whether a double layer structure (DLS) can be detected. The results of this particular analysis are inconclusive as to whether a DLS has been observed or not. Detected cloud base heights differ greatly from heights suggested by the lifting condensation level (LCL). A new empirical formula for lowest cloud base height is then derived using the measurements. The Ceilometer’s estimations of sky cover are assessed to be of reasonable quality. This is suggested by computed high correlation with incoming shortwave radiation at noon for three months. However, histograms of cloud cover measurements suggest that the ceilometer tends to probably either overestimate or underestimate cloud cover. Large differences in cloud cover were observed for the two wind sectors during unstable conditions. For the months of July and August, a diurnal cycle in cloud cover for the continental wind sector was observed which suggest the presence of Stratocumulus. Measurements performed during upwelling conditions closely resemble those of the marine wind sector performed during stable conditions.

Trainor, Lincoln Thomas. "Field observations and SWAN model predictions of wave evolution in a muddy coastal environment". Thesis, Monterey, Calif. : Naval Postgraduate School, 2009. http://edocs.nps.edu/npspubs/scholarly/theses/2009/Jun/09Jun%5FTrainor.pdf.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Resumen

Thesis (M.S. in Physical Oceanography)--Naval Postgraduate School, June 2009.
Thesis Advisor(s): Herbers, Thomas H. C. ; Janssen, Tim T. "June 2009." Description based on title screen as viewed on July 14, 2009. Author(s) subject terms: ocean waves, continental shelf, mud, littoral, SWAN. Includes bibliographical references (p. 69-71). Also available in print.

Moncuquet, Adèle. "Coastal internal waves on the Bay of Biscay shelf and their impact on cross-shelf transport". Electronic Thesis or Diss., Brest, 2024. http://www.theses.fr/2024BRES0010.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Resumen

Les ondes internes (OI) se propagent dans des milieux stratifiés où elles déforment le gradient de densité et génèrent des courants horizontaux et verticaux. Dans l’océan côtier, différentes formes d’OI peuvent être observées en fonction du profil vertical de densité et des courants avec lesquels les ondes interagissent. Sur les plateaux continentaux les OI génèrent du mélange et du transport qui dépend des caractéristiques des ondes. Dans certaines régions du monde, les OI génèrent du transport comparable au mouvement d’upwelling. Le Golfe de Gascogne est un haut lieu de génération de marées internes et d'ondes internes non linéaires (ONLI). Dans le GdG les OI ont été uniquement caractérisées au large et leurs capacités de transport est inconnue. La première partie de la thèse présente la marée et des ONLI observée pendant 1 mois sur le plateau Aquitain du GdG dans ~60 et 150m de fond. La marée interne et les ONLI de mode 1 ont générés des courants plus de trois fois supérieurs aux courants de marée barotrope. Sous deux pycnoclines, nous avons observé la coexistence et l'interaction d'ONLI de polarités opposées. Dans une seconde partie, nous quantifions le transport côte large sur le plateau Aquitain (62 m de fond) et le plateau Armoricain (48 m de fond) en utilisant les isothermes comme coordonnées verticales d'intégration. Sur le plateau Armoricain, le transport total est dominé par le pompage par les ondes internes. Sur le plateau Aquitain, le transport par les ondes internes domine proche du fond
The Bay of Biscay (BoB) is a hot spot for the generation of internal tides and nonlinear internal waves (NLIW). Previous studies have focused mainly on the seaward propagation of internal waves, and less on the shoreward propagation. The shelf region can be affected by internal tides and NLIW transport. The shelf is a complex hydrodynamical region and processes of different scales modify the background stratification and currents. Therefore, internal waves transform as they propagate across the shelf. Internal wave transformation on the shelf and the induced transport remain poorly described worldwide, especially on the BoB shelves. In this thesis, we describe the internal tide and NLIW from mooring observations on the BoB shelf and the induced cross-shelf transport. First, we describe the internal tide and NLIW on the Aquitaine shelf using 22 days of measurements (at 62 and 153 m depth). The results highlight the unexpected importance of the internal tide and NLIW during summer-time stratified conditions. NLIW of depression and elevation, with amplitude reaching up to 1/4th of the water depth and propagating shoreward with different speeds were observed. We observed conditions in which depression and elevation waves coexisted within the same internal tide phase, and could potentially interact. The second part of the work is dedicated to crossshelf net transport, associated with internal waves, or internal waves pumping (IWP) on both the Aquitaine and the Armorican shelf. On the Armorican shelf, IWP was the main driver of total transport near the boundaries and counterbalanced the subtidal dynamics in the middle of the water column. On the Aquitaine shelf, the total cross-shelf transport was a combination of subtidal transport and IWP

Trasvina, Castro Armando. "Offshore wind forcing in a coastal ocean : observations and modelling of the Gulf of Tehuantepec, Mexico". Thesis, Bangor University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.292249.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Fong, Derek Allen. "Dynamics of freshwater plumes: observations and numerical modeling of the wind-forced response and alongshore freshwater transport". Thesis, Massachusetts Institute of Technology, 1988. http://hdl.handle.net/1721.1/58510.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Resumen

Thesis (Ph. D.)--Joint Program in Physical Oceanography (Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences; and the Woods Hole Oceanographic Institution), 1988.
Includes bibliographical references (leaves 163-172).
A freshwater plume often forms when a river or an estuary discharges water onto the continental shelf. Freshwater plumes are ubiquitous features of the coastal ocean and usually leave a striking signature in the coastal hydrography. The present study combines both hydrographic data and idealized numerical simulations to examine how ambient currents and winds influence the transport and mixing of plume waters. The first portion of the thesis considers the alongshore transport of freshwater using idealized numerical simulations. In the absence of any ambient current, the downstream coastal current only carries a fraction of the discharged fresh water; the remaining fraction recirculates in a continually growing "bulge" of fresh water in the vicinity of the river mouth. The fraction of fresh water transported in the coastal current is dependent on the source conditions at the river mouth. The presence of an ambient current augments the transport in the plume so that its freshwater transport matches the freshwater source. For any ambient current in the same direction as the geostrophic coastal current, the plume will evolve to a steady-state width. A key result is that an external forcing agent is required in order for the entire freshwater volume discharged by a river to be transported as a coastal current. The next section of the thesis addresses the wind-induced advection of a river plume, using hydrographic data collected in the western Gulf of Maine. The observations suggest that the plume's cross-shore structure varies markedly as a function of fluctuations in alongshore wind forcing. Consistent with Ekman dynamics, upwelling favorable winds spread the plume offshore, at times widening it to over 50 km in offshore extent, while downwelling favorable winds narrow the plume width to a few Rossby radii. Near-surface current meters show significant correlations between cross-shore currents and alongshore wind stress, consistent with Ekman theory. Estimates of the terms in the alongshore momentum equation calculated from moored current meter arrays also indicate an approximate Ekman balance within the plume. A significant correlation between alongshore currents and alongshore wind stress suggests that interfacial drag may be important. The final section of the thesis is an investigation of the advection and mixing of a surface-trapped river plume in the presence of an upwelling favorable wind stress, using a three-dimensional model in a simple, rectangular domain. Model simulations demonstrate that the plume thins and is advected offshore by the cross shore Ekman transport. The thinned plume is susceptible to significant mixing due to the vertically sheared horizontal currents. The first order plume response is explained by Ekman dynamics and a Richardson number mixing criterion.
by Derek Allen Fong.
Ph.D.

Más fuentes

Libros sobre el tema "Coastal observations":

Radtke, Hans D. Observations on the 1989 coastal economy. [Newport, Oregon: Oregon Coastal Zone Management Association, Inc.], 1990.

Buscar texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Barnes, Peter W. Winter coastal observations, Lake Erie, Ohio shore. [Menlo Park, Calif.]: U.S. Dept. of the Interior, U.S. Geological Survey, 1993.

Buscar texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

United States. Congress. Senate. Committee on Commerce, Science, and Transportation. Ocean and Coastal Observation Systems Act: Report of the Committee on Commerce, Science and Transportation on S. 1400. Washington: U.S. G.P.O., 2003.

Buscar texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Buscar texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Buscar texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Ngana, J. The climatology and hydrology of Pugu and Kazimzumbwi coastal forests. [Dar es Salaam]: Institute of Resource Assessment, University of Dar es Salaam, 1994.

Buscar texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Balthis, W. Leonard. Ecological condition of coastal ocean waters within Stellwagen Bank National Marine Sanctuary, 2008. Silver Spring, MD: U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Ocean Service, 2011.

Buscar texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Norris, S. W. Near surface sea temperatures in coastal waters of the North Sea, English Channel and Irish Sea. Lowestoft: Centre for Environment, Fisheries and Aquaculture Science, 2001.

Buscar texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

K, Dewey R. y Oregon State University. College of Oceanography., eds. Coastal transition zone experiment - 1988: Rapid sampling vertical profiler observations. Corvallis, Or: College of Oceanography, Oregon State University, 1988.

Buscar texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Park, M. M. Coastal transition zone pilot - 1987: Rapid sampling vertical profiler observations. Corvallis, Or: College of Oceanography, Oregon State University, 1987.

Buscar texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Más fuentes

Capítulos de libros sobre el tema "Coastal observations":

McCreary, Julian P. y Satish R. Shetye. "Coastal Ocean". En Observations and Dynamics of Circulations in the North Indian Ocean, 333–59. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-5864-9_13.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Scarlatos, Panagiotis D. y Ashish J. Mehta. "Some observations on erosion and entrainment of estuarine fluid muds". En Coastal and Estuarine Studies, 321–32. Washington, D. C.: American Geophysical Union, 1990. http://dx.doi.org/10.1029/ce038p0321.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Silvestri, Sonia y Marco Marani. "Salt-Marsh Vegetation and Morphology: Basic Physiology, Modelling and Remote Sensing Observations". En Coastal and Estuarine Studies, 5–25. Washington, D. C.: American Geophysical Union, 2013. http://dx.doi.org/10.1029/ce059p0005.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Pellikka, Hilkka, Jenni Rauhala, Kimmo K. Kahma, Tapani Stipa, Hanna Boman y Antti Kangas. "Recent observations of meteotsunamis on the Finnish coast". En Meteorological Tsunamis: The U.S. East Coast and Other Coastal Regions, 197–215. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-12712-5_11.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Brown, Christopher W., Laurence N. Connor, John L. Lillibridge, Nicholas R. Nalli y Richard V. Legeckis. "An Introduction to Satellite Sensors, Observations and Techniques". En Remote Sensing of Coastal Aquatic Environments, 21–50. Dordrecht: Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-1-4020-3100-7_2.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Okubo, K. "Field observations of the dense bottom current between the North and South Basins". En Coastal and Estuarine Studies, 43–51. Washington, D. C.: American Geophysical Union, 1995. http://dx.doi.org/10.1029/ce048p0043.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Freeland, Howard J. "Observations of the low-frequency circulation off the west coast of British Columbia, Canada". En Coastal and Estuarine Studies, 132–41. Washington, D. C.: American Geophysical Union, 1989. http://dx.doi.org/10.1029/ce034p0132.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Pattiaratchi, Charitha y E. M. S. Wijeratne. "Observations of meteorological tsunamis along the south-west Australian coast". En Meteorological Tsunamis: The U.S. East Coast and Other Coastal Regions, 281–303. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-12712-5_16.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Bonotto, S., D. van der Ben, F. Capot, J. M. Bouquegneau y M. Cogneau. "Technetium in Coastal Environments: Field Observations and Laboratory Experiments". En Metals in Coastal Environments of Latin America, 222–36. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-71483-2_20.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Abou El-Magd, Islam y Elham Ali. "Earth Observations for Egyptian Coastal Lakes Monitoring and Management". En The Handbook of Environmental Chemistry, 201–19. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/698_2017_79.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Actas de conferencias sobre el tema "Coastal observations":

LUDKA, B. C., R. T. GUZA y W. C. O'REILLY. "OBSERVATIONS OF FOUR NOURISHED BEACHES". En Coastal Sediments 2015. WORLD SCIENTIFIC, 2015. http://dx.doi.org/10.1142/9789814689977_0048.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Conkright-Gregg, Margarita, Margarita Conkright-Gregg, Margarita Conkright-Gregg, Margarita Conkright-Gregg y Margarita Conkright-Gregg. "Ocean and Coastal Data Stewardship". En OceanObs'09: Sustained Ocean Observations and Information for Society. European Space Agency, 2010. http://dx.doi.org/10.5270/oceanobs09.cwp.18.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

de La Beaujardière, Jeff, Jeff de La Beaujardière, Jeff de La Beaujardière, Jeff de La Beaujardière, Jeff de La Beaujardière, Jeff de La Beaujardière, Jeff de La Beaujardière et al. "Ocean and Coastal Data Management". En OceanObs'09: Sustained Ocean Observations and Information for Society. European Space Agency, 2010. http://dx.doi.org/10.5270/oceanobs09.cwp.22.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Herbers, T. H. C. y R. T. Guza. "Observations of Wind Wave Nonlinearity". En 22nd International Conference on Coastal Engineering. New York, NY: American Society of Civil Engineers, 1991. http://dx.doi.org/10.1061/9780872627765.049.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

TRAYKOVSKI, PETER. "OBSERVATIONS OF THE GEOMETERY AND MIGRATION OF TIDALLY REVERSING DUNES". En Coastal Sediments 2015. WORLD SCIENTIFIC, 2015. http://dx.doi.org/10.1142/9789814689977_0126.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

JAFARI, NAVID H., JACK A. CADIGAN, JASMINE BEKKAYE, QIN CHEN, LING ZHU y BRITT RAUBENHEIMER. "GEOTECHNICAL OBSERVATIONS OF HURRICANE IMPACTS ON NATURAL AND HYBRID INFRASTRUCTURE". En Coastal Sediments 2023. WORLD SCIENTIFIC, 2023. http://dx.doi.org/10.1142/9789811275135_0232.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

VAN WIECHEN, PAUL, JANTIEN RUTTEN, RYAN MIERAS, KATHERINE ANARDE, MARION TISSIER y SIERD DE VRIES. "AVALANCHING OF THE DUNE FACE: FIELD OBSERVATIONS AND EQUILIBRIUM THEORY". En Coastal Sediments 2023. WORLD SCIENTIFIC, 2023. http://dx.doi.org/10.1142/9789811275135_0069.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Talaue McManus, Liana. "Coastal Futures and Ocean Observing Initiatives". En OceanObs'09: Sustained Ocean Observations and Information for Society. European Space Agency, 2010. http://dx.doi.org/10.5270/oceanobs09.pp.37.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Lippmann, T. C., T. H. C. Herbers y E. B. Thornton. "Observations of Infragravity Waves in the Nearshore". En Fourth Conference on Coastal Dynamics. Reston, VA: American Society of Civil Engineers, 2001. http://dx.doi.org/10.1061/40566(260)6.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

COHN, NICHOLAS, DYLAN ANDERSON y PETER RUGGIERO. "OBSERVATIONS OF INTERTIDAL BAR WELDING ALONG A HIGH ENERGY, DISSIPATIVE COASTLINE". En Coastal Sediments 2015. WORLD SCIENTIFIC, 2015. http://dx.doi.org/10.1142/9789814689977_0021.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Informes sobre el tema "Coastal observations":

Blumberg, Alan F. y James K. Lewis. Assimilation of Observations into Coastal and Nearshore Circulation Models. Fort Belvoir, VA: Defense Technical Information Center, septiembre de 1997. http://dx.doi.org/10.21236/ada629380.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Rémy, Elisabeth, Romain Escudier y Alexandre Mignot. Access impact of observations. EuroSea, 2023. http://dx.doi.org/10.3289/eurosea_d4.8.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Resumen

The accuracy of the Copernicus Marine Environment and Monitoring Service (CMEMS) ocean analysis and forecasts highly depend on the availability and quality of observations to be assimilated. In situ observations are complementary to satellite observations that are restricted to the ocean surface. Higher resolution model forecasts are required by users of the CMEMS global and regional ocean analysis and forecasts. To support this with an efficient observational constrain of the model forecast via data assimilation, an increase observation coverage is needed, associated with an improved usage of the available ocean observations. This work exploits the capabilities of operational systems to provide comprehensive information for the evolution of the GOOS. In this report, we analyse the use and the efficiency of the in-situ observations to constrain regional and global Mercator Ocean systems. Physical and biogeochemical variables are considered. The in-situ observations are used either to estimate physical ocean state at global and regional scale via data assimilation or to estimate BGC model parameters. The impact of the physical in situ observations assimilated in open ocean and coastal areas is assessed with numerical data assimilation experiments. The experiments are conducted with the regional 1/36° resolution and global 1/12° resolution systems operated by Mercator Ocean for the Copernicus Marine Service. For the global physical ocean, the focus is on the tropical ocean to better understand how the tropical mooring observations constrain the intraseasonal to daily variability and the complementarity with satellite observations and the deep ocean. The tropical moorings provide unique high frequency observations at different depth, but they are far away from each other, so part of the signal in the observation are decorrelated from one mooring to the others. It is only via an integrated approach, as data assimilation into a dynamical model and complementarity with other observing networks that those observations can efficiently constrain the different scales of variability of the tropical ocean circulation. As the satellite observations brings higher spatial resolution between the tropical moorings but for the ocean surface, we show that the tropical mooring and Argo profile data assimilation constrain the larger scale ocean thermohaline vertical structure (EuroSea D2.2; Gasparin et al., 2023). The representation of the high frequency signals observed at mooring location is also significantly improved in the model analysis compared to a non-assimilative simulation. The ocean below 2000 m depth is still largely under constrained as very few observations exist. Some deep ocean basins, as the Antarctic deep ocean, shows significant trend over the past decade but they are still not accurately monitored. Based on the spread of four deep ocean reanalysis estimates, large uncertainties were estimated in representing local heat and freshwater content in the deep ocean. Additionally, temperature and salinity field comparison with deep Argo observations demonstrates that reanalysis errors in the deep ocean are of the same size as or even stronger than the observed deep ocean signal. OSSE already suggested that the deployment of a global deep Argo array will significantly constrain the deep ocean in reanalysis to be closer to the observations (Gasparin et al., 2020). At regional and coastal scales, the physical ocean circulation is dominated by higher frequency, smaller scale processes than the open ocean which requires different observation strategy to be well monitor. The impact of assimilating high frequency and high-resolution observations provided by gliders on European shelves is analysed with the regional Iberic Biscay and Irish (IBI) system. It was found that repetitive glider sections can efficiently help to constrain the transport of water masses flowing across those sections. BGC ocean models are less mature than physical ocean models and some variable dependencies are still based on empirical functions. In this task, Argo BGC profile observations were used to optimize the parameters of the global CMEMS biogeochemical model, PISCES. A particle filter algorithm was chosen to optimize a 1D configuration of PISCES in the North Atlantic. The optimization of the PISCES 1D model significantly improves the model's ability to reproduce the North Atlantic bloom Recommendations on the in-situ network extensions for real time ocean monitoring are given based on those results, and the one also obtained in the WP2, Task 2.2 where data assimilation experiments but with simulated observations where conducted. Argo extension and the complementarity with satellite altimetry was also extensively studied. (EuroSea Deliverable ; D4.8)

Lentz, Steven y R. K. Shearman. Analysis of Observations from the Coastal Mixing and Optics Moored Array. Fort Belvoir, VA: Defense Technical Information Center, agosto de 2002. http://dx.doi.org/10.21236/ada630524.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Shulman, Igor. Real-time Observations of a Coastal Upwelling Event Using Innovative Technologies. Fort Belvoir, VA: Defense Technical Information Center, septiembre de 2003. http://dx.doi.org/10.21236/ada620412.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Raduan, Jeffrey D., Steven R. Ramp y Leslie K. Rosenfeld. Real-Time Observations of a Coastal Upwelling Event Using Innovative Technologies. Fort Belvoir, VA: Defense Technical Information Center, agosto de 2001. http://dx.doi.org/10.21236/ada625312.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Shulman, Igor. Real-Time Observations of a Coastal Upwelling Event Using Innovative Technologies. Fort Belvoir, VA: Defense Technical Information Center, septiembre de 2001. http://dx.doi.org/10.21236/ada625357.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Paduan, Jeffrey D., Steven R. Ramp y Leslie K. Rosenfeld. Real-Time Observations of a Coastal Upwelling Event Using Innovative Technologies. Fort Belvoir, VA: Defense Technical Information Center, septiembre de 2002. http://dx.doi.org/10.21236/ada626586.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Shulman, Igor. Real-time Observations of a Coastal Upwelling Event Using Innovative Technologies. Fort Belvoir, VA: Defense Technical Information Center, agosto de 2002. http://dx.doi.org/10.21236/ada626605.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Nuss, Wendell A. y Douglas K. Miller. Dependence of Mesoscale Coastal Predictability on Data Assimilation and Distribution of Observations. Fort Belvoir, VA: Defense Technical Information Center, septiembre de 2000. http://dx.doi.org/10.21236/ada610070.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.