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Baymouth Bar
In Russian geomorphology, a peresyp (), also known as a bay-mouth bar is a narrow sandbar that rises above the water level (like a spit (landform), spit) and separates a liman (landform), liman or a lagoon from the sea. Unlike tombolo bars, a ''peresyp'' seldom forms a contiguous strip and usually has one or several channels (called ''girlo'' () in Russian) that connect the liman and the sea. Федченко Г.П, 'О самосадочной соли и соляных озерах Каспийского и Азовского бассейнов'' 1870p. 54/ref>ПЕРЕСЫПЬ ''Great Soviet Encyclopedia'' The noun wikt:пересыпь, пересыпь is derived from the verb пересыпать, "sprinkle over". Similarly to spits, ''peresyps'' are formed by actions of surf zone currents from sand, gravel/pebbles, and crushed shel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salt Lake
A salt lake or saline lake is a landlocked body of water that has a concentration of salts (typically sodium chloride) and other dissolved minerals significantly higher than most lakes (often defined as at least three grams of salt per liter). In some cases, salt lakes have a higher concentration of salt than sea water; such lakes can also be termed hypersaline lake, and may also be pink lakes on account of their color. An alkalic salt lake that has a high content of carbonate is sometimes termed a soda lake. Salt lakes are classified according to salinity levels. The formation of these lakes is influenced by processes such as evaporation and deposition. Salt lakes face serious conservation challenges due to climate change, pollution and water diversion. Classification The primary method of classification for salt lakes involves assessing the chemical composition of the water within the lakes, specifically its salinity, pH, and the dominant ions present. Subsaline Sub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coastal Geography
Coastal geography is the study of the constantly changing region between the ocean and the land, incorporating both the physical geography (i.e. coastal geomorphology, climatology and oceanography) and the human geography (sociology and history) of the coast. It includes understanding coastal weathering processes, particularly wave action, sediment movement and weather, and the ways in which humans interact with the coast. Wave action and longshore drift The waves of different strengths that constantly hit against the shoreline are the primary movers and shapers of the coastline. Despite the simplicity of this process, the differences between waves and the rocks they hit result in hugely varying shapes. The effect that waves have depends on their strength. Strong waves, also called destructive waves, occur on high-energy beaches and are typical of winter. They reduce the quantity of sediment present on the beach by carrying it out to bars under the sea. Constructive, weak wave ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geomorphology
Geomorphology () is the scientific study of the origin and evolution of topographic and bathymetric features generated by physical, chemical or biological processes operating at or near Earth's surface. Geomorphologists seek to understand why landscapes look the way they do, to understand landform and terrain history and dynamics and to predict changes through a combination of field observations, physical experiments and numerical modeling. Geomorphologists work within disciplines such as physical geography, geology, geodesy, engineering geology, archaeology, climatology, and geotechnical engineering. This broad base of interests contributes to many research styles and interests within the field. Overview Earth's surface is modified by a combination of surface processes that shape landscapes, and geologic processes that cause tectonic uplift and subsidence, and shape the coastal geography. Surface processes comprise the action of water, wind, ice, wildfire, and lif ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mouth Bar
A mouth bar is an element of a deltaic system, which refers to the typically mid-channel deposition of the sediment transported by the river channel at the river mouth. Formation mechanism River mouth bars form because the cross-sectional area of the expanding sediment-laden outflow increases, and consequently, the sediment transport rate down the jet centerline decreases basinward as flow progresses from confined to unconfined. More specifically, four stages of the river mouth bar formation are: (1) Turbulent jet, expanding into a shallow and sloping basin, first creates parallel subaqueous levees extending basinward and starting a river mouth bar basinward of the levee tips due to the decrease in jet momentum flux and resulting the high sedimentation rate in this region; (2) The subaqueous levees extend basinward and the river mouth bar aggrades and progrades since its presence causes flow acceleration on streamlines over the bar, and subsequently, this acceleration chang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Braid Bar
Braid bars, or mid-channel bars, are river bars typically present in braided river channels. These formations have many names, including medial, longitudinal, crescentic, and transverse bars, as well as the more colloquial sandflat. Braid bars are distinguished from point bars due to their presence in the middle of a flow channel, rather than along a bank of the river channel. Formation Braid bars often originate from remnants of point bars or the growth of mid-channel unit bars in braided rivers. These features typically form in rivers with a high sediment load, within channels characterized by a large bed load and easily-eroded bank material. There are several mechanisms of formation. One explanation is that flow in the river may be redirected over a point bar, wherein the bar may be separated from the bank and thus become isolated within the channel. This forms a small ‘island’ of sediment, which can evolve into a braid bar. Alternatively, an obstacle such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tylihul Estuary
__NOTOC__ The Tylihul Estuary also called Tylihulskyi lyman () or simply Tiligul is a Ramsar-listed government protected estuary or liman of the Tylihul River. Located in Odesa Oblast in the south of Ukraine, the estuary includes an ornithological game reserve and the Tylihulskyi Regional Landscape Park situated on the East coast. The name of the water body originates from the , meaning "mad, rabid lake". Geography Tylihul is one of the purest estuaries (brackish lagoons) on the northwest coast of the Black Sea, although there are some ecological concerns related to the existence of the bottom ammoniac tube and due to intensive fertilizing of the surrounding agricultural fields. The estuary has a length 80 km, width 0.2–3.5 km, and a depth up to 19 m. The isolation of the estuary from the Black Sea occurred in the 18th to 19th centuries. Now it is isolated from the sea by a 7-km long and 4-km wide '' peresyp'' shoal. The ''peresyp'' is covered by solonchaks a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black Sea
The Black Sea is a marginal sea, marginal Mediterranean sea (oceanography), mediterranean sea lying between Europe and Asia, east of the Balkans, south of the East European Plain, west of the Caucasus, and north of Anatolia. It is bounded by Bulgaria, Georgia (country), Georgia, Romania, Russia, Turkey, and Ukraine. The Black Sea is Inflow (hydrology), supplied by major rivers, principally the Danube, Dnieper and Dniester. Consequently, while six countries have a coastline on the sea, its drainage basin includes parts of 24 countries in Europe. The Black Sea, not including the Sea of Azov, covers , has a maximum depth of , and a volume of . Most of its coasts ascend rapidly. These rises are the Pontic Mountains to the south, bar the southwest-facing peninsulas, the Caucasus Mountains to the east, and the Crimean Mountains to the mid-north. In the west, the coast is generally small floodplains below foothills such as the Strandzha; Cape Emine, a dwindling of the east end ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kuialnyk Estuary
The Kuialnyk Estuary (, ), formerly known as Andriivskyi Lyman, is an estuary of the Velykyi Kuialnyk on the northwest coast of the Black Sea, one of the group of Odesa estuaries, located north of Odesa. The name comes from Crimean Tatar ''kuyanlık'', meaning "thick". General characteristics The area, depending on the water level, ranges from 52–60 km². Its length is 28 km, and its width is more than 3 km. The average depth is about 1 m. The volume is about 52 million m³. It is separated from the sea by a sandy Kuyalnytskyi-Khadzhibey ''peresyp'' sandbar up to 3 km wide. The Velykyi Kuialnik River flows into the estuary. The lowest point of Ukraine is located near the Kuialnyk estuary: 5 meters below sea level. On the southeast coast of the estuary there is the Kuialnytskyi mud resort, on the banks of the estuary - beaches. The water temperature reaches 28-30 °C in summer. Once in the location of Kuialnyk estuary was located the mouth of the ri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Khadzhibey Estuary
The Khadzhibey Estuary, or Khadzhibeyskyi Liman (, ), is an estuary of the north-western part of the Black Sea, located on the north-west from the City of Odesa. It is named after the former Khadzhibey fortress. The estuary is separated from the sea by the Kuyalnytsky-Khadzhibey '' peresyp'' – sandbar, which is about 5 km in length. The length of the estuary is 31 km, width 0.5–2.5 km, square 70 km2, depth up to 2.5 m. The bottom of the estuary is covered by the flakes of black mud, which have healthy properties. The river flows to the estuary. The fauna of the estuary consists of crabs'' Rhithropanopeus harrisii'', shrimps '' Palaemon elegans'', round goby '' Neogobius melanostomus'' and monkey goby '' Neogobius fluviatilis'', etc. References * Starushenko L.I., Bushuyev S.G. (2001) Prichernomorskiye limany Odeschiny i ih rybohoziaystvennoye znacheniye. Astroprint, Odessa, 151 pp. (in Russian) * North-western Black Sea: biology and ecology, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Odesa
Odesa, also spelled Odessa, is the third most populous List of cities in Ukraine, city and List of hromadas of Ukraine, municipality in Ukraine and a major seaport and transport hub located in the south-west of the country, on the northwestern shore of the Black Sea. The city is also the administrative centre of the Odesa Raion and Odesa Oblast, as well as a multiethnic cultural centre. As of January 2021, Odesa's population was approximately On 25 January 2023, its Historic Centre of Odesa, historic city centre was declared a World Heritage Site and added to the List of World Heritage in Danger by the UNESCO World Heritage Committee in recognition of its multiculturality and 19th-century urban planning. The declaration was made in response to the Odesa strikes (2022–present), bombing of Odesa during the Russian invasion of Ukraine, which has damaged or destroyed buildings across the city. In classical antiquity a large Greek settlement existed at its location no later than t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
