Academic literature on the topic 'Seaside circulation'

The current state of the study of Russian dialects in Karelian Seaside is analyzed, the territory of the studied region, which coincides with the boundaries of the dialectal division of the Russian language in 1915 is indicated. It is shown that the exclusion of Karelian Seaside from the dialectal division of 1965, which was an indirect reason for the lack of proper research attention to this region is unjustified. An overview of linguistic works devoted to the study of various language levels (phonetic, grammatical, lexical) is presented. The review of dictionaries, including the vocabulary of Russian dialects of the Karelian Seaside, is carried out. The prospects and objectives of the study are determined. In particular, future research is associated with comparative work on the study of the preservation / change of linguistic phenomena at each level, including the lexical one, which is the most stable in its main core. It is primarily due to extralinguistic reasons. Particular attention is paid to the use of digital technologies when creating a textual database, tested on the materials of the Karelian Seaside. It is noted that the electronic resource will make it possible to constantly introduce new data into scientific circulation, connecting them to various aspects of research, both linguistic and broader humanitarian.

In the context of the world's increasingly damaged ecological environment, rare natural disaster phenomena occur from time to time in seaside cities worldwide. Scientists later found that such irregular disasters are regular due to the instability of the Walker circulation, weakening to produce the El Niño phenomenon and strengthening to make the La Niña phenomenon. Based on this background, we not only have to think about the impact of various natural disasters generated by the Walker circulation on the ecology and economy of the world. This paper adds to the list of phenomena and effects of the Walker circulation that have not been systematically summarized over the years and expands on how to avoid large-scale disasters in the context of the Walker circulation, providing a more purposeful and distinctive organization of the research direction of the Walker circulation. This paper finds that both El Niño and La Niña caused by the Walker circulation have influenced the ecological and economic environment of the world. In the future, we can explore ways to smooth the Walker Circulation through research or to reduce the harm brought by the Walker Circulation to the world more purposefully and efficiently, to reduce its uncertainty, and to create an excellent and smooth background for the future of agriculture and commerce, so that the global community of interests can develop steadily.

Abstract This study reveals the dynamics behind the intensified, downslope, cross-isobath transport over a widened shelf (narrowing downwave) in the northeastern South China Sea (NSCS) during a downwelling event. Utilizing a three-dimensional numerical model over an idealized NSCS shelf, this study identified the forcing process and derived an analytical understanding of the invoked dynamics for the intensified downslope cross-isobath transport. This study found that the transport was formed by an amplified geostrophic transport because of an increased positive along-isobath pressure gradient force (PGF), PY*, and by an enhanced bottom Ekman transport due to converging flow over the widened shelf. Based on the depth-integrated vorticity dynamics, PY* was linked with net frictional stress curl in the water column and the curl was primarily associated with the shear vorticity field induced by downwelling jet. The increased positive vorticity seaside of the jet provided positive PY* for the downslope geostrophic transport. The cross-isobath PGF, PX*, which was geostrophically formed and shaped by the spatially asymmetric isobaths of the widened shelf, determined the intensities of the jet and thus the associated shear vorticity that quantified the respective bottom friction transport and PY* for the intensified cross-isobath transport. It was found that the downslope transport over the widened shelf was strengthened in a stratified flow by the linked intensifications of barotropic PX* or the concurrent downwelling jet, shear vorticity field, PY*, and bottom friction because of an increase of volume flux upstream of the widened shelf.

According to expeditionary and coastal monitoring studies carried out in 2019 and 2020, we analyzed the structure features and temporal variations of colored dissolved organic matter concentration in the Omega Bay field. It is shown that the structure of the analyzed parameter field in the Omega Bay is formed as a result of interactions in the system of local anticyclonic circulation that involves both Sevastopol seaside water, where its concentration is close to the natural normal, and water of the isolated apex part of the bay that experiences anthropogenic pressure. The field under consideration is well stratified in the apex of the bay and is characterized by poorly pronounced vertical stratification in the central and open marine part of the bay. The response to atmospheric and marine processes is traced in the field of colored dissolved organic matter concentration during the summer of 2020. It was revealed that rains and polluted water advection from the sea were accompanied by a noticeable increase in the concentration of the analyzed substance in the beach area of the bay. The opposite effect was observed during upwelling.

Abstract A three-dimensional, high-resolution numerical model is used to investigate processes and dynamics of an intensified upwelling that is induced by a coastal promontory over the East China Sea (ECS) shelf. The center of the intensified upwelling around the promontory has been constantly observed, but, so far, it has been dynamically unexplained. Forced by an idealized southeasterly wind stress, the model results well capture the observed upwelling at the lee of the coastal promontory. The intensified upwelling is formed by a strengthened shoreward transport downstream of the promontory as the upwelling jet veers shoreward. The jet is mainly controlled by a cross-shore geostrophic balance and is largely modulated by both centrifugal acceleration associated with nonlinear advection and by bottom stress. The strengthened shoreward transport is mainly attributed to the cross-shore geostrophic current that is induced by a countercurrent (negative) pressure gradient force (PGF) and partly attributed to the bottom Ekman transport. Based on the analyses of the momentum balance and depth-integrated vorticity dynamics, the authors provide a new explanation for the origin of negative PGF. It is found that the countercurrent PGF is generated by negative bottom stress curl and strengthened by negative vorticity advection downstream of the promontory. While the negative bottom stress curl arises from bottom shear vorticity, the source of negative advection downstream of the promontory is the negative shear vorticity on the seaside of the shoreward-bent jet. Nevertheless, cyclonic curvature vorticity at the bottom and positive vorticity advection in the water column at the promontory weakens the negative PGF. Although nonlinear advection strengthens vorticity advection, it weakens bottom stress curl and has little net effect on the countercurrent PGF.

Tetragonia tetragonoides (Pall.) Kuntze (TTK) is grown for the edible leaves, and can be used as food. And which commonly called Beonhaengcho in Republic of Korea. TTK is found along the seaside of the Jeju-Island and it has long been consumed as a food for women’s health. We investigated the effects of TTK on peripheral circulation disorder during menopausal transition and/or menopause in a hind-limb ischemic (HLI) mouse model. Chemotactic motility and tube formation of vascular epithelial cells were evaluated in human umbilical vein endothelial cells (HUVECs). Female C57BL/6 mice were fed a TTK (150 or 450 mg/kg/day) for four weeks and the rate of blood flow was assessed using a laser Doppler after HLI. TTK treatment significantly increased cell migration and the branch interval value of tubular structure in a dose-dependently. In the TTK treatment group, blood flow rate was significant induced at 7, 14, and 28 days after HLI, compared with the vehicle. TTK treatment also an increase in capillary density, and the highest levels of pERK(1/2), pAkt, pPLCγ1 and pFAK proteins compared to the vehicle control. These results suggest that extract of TTK may ameliorate the blood flow via improvement of peripheral angiogenesis under hind-limb ischemic stress in a menopausal mouse model.

A new merged high-frequency radar (HFR) data set collected using SeaSonde and WERA (WEllen RAdar) systems was used to examine the ocean surface circulation at diurnal, seasonal and inter-annual time scales along the south-west coast of Australia (SWWA), between 29°–32° S. Merging was performed after resampling WERA data on the coarser SeaSonde HFR grid and averaging data from the two HFR systems in the area of common overlap. Direct comparisons between WERA and SeaSonde vectors in their overlapping areas provided scalar and vector correlation values in the range Ru = [0.24, 0.76]; Rv = [0.39, 0.83]; ρ = [0.44, 0.75], with mean bias between velocity components in the range [−0.02, 0.28] ms−1, [−0.16, 0.16] ms−1 for the U, V components, respectively. The lower agreement between vectors was obtained in general at the boundaries of the HFR domains, where the combined effects of the bearing errors, geometrical constraints, and the limited angular field of view were predominant. The combined data set allowed for a novel characterization of the dominant features in the region, such as the warmer poleward-flowing Leeuwin Current (LC), the colder Capes Current (CC) and its northward extensions, the presence of sub-mesoscale to mesoscale eddies and their generation and aggregation areas, along with the extent offshore of the inertial-diurnal signal. The contribution of tides was weak within the entire HFR domain (<10% total variance), whilst signatures of significant inertial- and diurnal-period currents were present due to diurnal–inertial resonance. A clear discontinuity in energy and variance distribution occurred at the shelf break, which separates the continental shelf and deeper offshore regions, and defined the core of the LC. Confined between the LC and the coastline, the narrower and colder CC current was a feature during the summer months. Persistent (lifespan greater than 1 day) sub-mesoscale eddies (Rossby number O (1)) were observed at two main regions, north and south of 31.5° S, offshore of the 200 m depth contour. The majority of these eddies had diameters in the range 10–20 km with 50% more counter clockwise rotating (CCW) eddies compared to clockwise (CW) rotating eddies. The northern region was dominated by CCW eddies that were present throughout the year whilst CW eddies were prevalent in the south with lower numbers during the summer months.

Abstract. The Ebro River delta is a relevant marine protected area in the western Mediterranean. In order to promote the conservation of its ecosystem and support operational decision making in this sensitive area, a three-site standard-range (13.5 MHz) CODAR SeaSonde high-frequency (HF) radar was deployed in December 2013. The main goal of this work is to explore basic features of the sea surface circulation in the Ebro deltaic region as derived from reliable HF radar surface current measurements. For this aim, a combined quality control methodology was applied: firstly, 1-year long (2014) real-time web monitoring of nonvelocity-based diagnostic parameters was conducted to infer both radar site status and HF radar system performance. The signal-to-noise ratio at the monopole exhibited a consistent monthly evolution, although some abrupt decreases (below 10 dB), occasionally detected in June for one of the radar sites, impacted negatively on the spatiotemporal coverage of total current vectors. It seemed to be sporadic episodes since radar site overall performance was found to be robust during 2014. Secondly, a validation of HF radar data with independent in situ observations from a moored current meter was attempted for May–October 2014. The accuracy assessment of radial and total vectors revealed a consistently high agreement. The directional accuracy of the HF radar was rated at better than 8°. The correlation coefficient and root mean square error (RMSE) values emerged in the ranges [0.58–0.83] and [4.02–18.31] cm s−1, respectively. The analysis of the monthly averaged current maps for 2014 showed that the HF radar properly represented basic oceanographic features previously reported, namely, the predominant southwestward flow, the coastal clockwise eddy confined south of the Ebro delta mouth, or the Ebro River impulsive-type freshwater discharge. The EOF analysis related the flow response to local wind forcing and confirmed that the surface current field evolved in space and time according to three significantly dominant modes of variability.

Abstract. Ebro River Delta is a relevant marine protected area in the western Mediterranean. In order to promote the conservation of its ecosystem and support operational decision making in this sensitive area, a three site standard-range (13.5 MHz) CODAR SeaSonde High Frequency (HF) radar was deployed in 2013. Since there is a growing demand for reliable HF radar surface current measurements, the main goal of this work is to present a combined quality control methodology. Firstly, one year-long (2014) real-time web monitoring of nonvelocity-based diagnostic parameters is conducted in order to infer both radar site status and HF radar system performance. Signal-to-noise ratio at the monopole exhibited a consistent monthly evolution although some abrupt decreases (below 10 dB), occasionally detected in June for one of the radar sites, impacted negatively on the spatiotemporal coverage of total current vectors. It seemed to be a sporadic episode since radar site overall performance was found to be robust during 2014. Secondly, a validation of HF radar data with independent in situ observations from a moored current meter was attempted for May–October 2014. The accuracy assessment of radial and total vectors revealed a consistently high agreement. The directional accuracy of the HF radar was rated at better than 8°. The correlation coefficient and RMSE values emerged in the ranges 0.58–0.83 and 4.02–18.31 cm s−1, respectively. The analysis of the monthly averaged current maps for 2014 showed that the HF radar properly represented basic oceanographic features previously reported, namely: the predominant southwestward flow, the coastal clockwise eddy confined south of Ebro Delta mouth or the Ebro River impulsive-type freshwater discharge. Future works should include the use of verified HF radar data for the rigorous skill assessment of operational ocean circulation systems currently running in Ebro estuarine region like MyOcean IBI.

La réalisation de cette thèse repose sur le constat suivant : la littérature sur l’histoire balnéaire d’Étretat à partir d’environ 1850 est relativement ancienne, et les rares études réalisées suggèrent que ce processus relève d’un strict déterminisme, les aménités particulières du site de ce village ayant nécessairement dicté son devenir sur le plan touristique. Or, les sources disponibles laissent supposer l’influence fondamentale de causalités d’une nature tout autre. Ce travail de recherche vise prioritairement, d’un côté, à mettre en évidence la prégnance du processus de circulation balnéaire dans la naissance et le développement de la station d’Étretat entre le mitan du XIXe siècle et1960, et, de l’autre, le fait qu’il s’agit véritablement d’un cas d’école. La circulation balnéaire est un phénomène dynamique reposant sur des éléments d’ordre à la fois matériel (ex. moyens de transport permettant un accès suffisamment commode) mais aussi immatériel (presse, littérature, publicité, guides touristiques…) dont la combinaison crée une « envie » à l’endroit d’un lieu donné propice à un potentiel développement touristique. Nous entendons démontrer que si, d’une certaine façon, la naissance et l’essor de cette destination relèvent largement de l’impensé (puisque cela allait prétendument de soi), c’est qu’ils résultent de la construction d’une image dans laquelle les techniques du storytelling (ex. le mythe fondateur de cette station qu’est le premier bain de mer pris par deux jeunes aristocrates en 1842) ont leur part. Les enseignements que nous en tirons sont susceptibles de nourrir la réflexion sur l’histoire des stations balnéaires et des circulations en général
This thesis is based on the following observation: the literature on the history of the seaside resort of Étretat from around 1850 onwards is relatively old, and the few studies carried out suggest that this process is strictly deterministic, with the particular amenities of this village's site necessarily dictating its future in terms of tourism. However, the available sources suggest the fundamental influence of causalities of a completely different nature. The main aim of this research is, on the one hand, to highlight the importance of the seaside circulation process in the birth and development of the resort of Étretat between the middle of the 19th century and 1960, and, on the other hand, the fact that it is truly a case study. Seaside circulation is a dynamic phenomenon based on both material (e.g. means of transport allowing sufficiently convenient access) and immaterial (press, literature, advertising, tourist guides, etc.) elements, the combination of which creates a "desire" for a given place that is conducive to potential tourist development. We intend to show that if, in a certain way, the birth and development of this destination are largely unthought of (since it was supposedly self-evident), it is because they result from the construction of an image in which the techniques of storytelling (e.g. the founding myth of this resort, which is the first sea bathing taken by two young aristocrats in 1842) have their part. The lessons we have learned from this are likely to contribute to the reflection on the history of seaside resorts and of circulation in general