2,436 articles
Sulzberger Bay
Sulzberger Bay is an Antarctic bay indenting the Sulzberger Ice Shelf on the Marie Byrd Land coast, discovered by the Byrd Antarctic Expedition in 1929.
Sumatran peat swamp forests
Sumatran peat swamp forests are ombrogenous tropical rainforests on peat soils, originally about 7 million ha, rich in carbon and endemic wildlife, now heavily logged, drained, burned, and converted to oil palm and pulp plantations.
Suncheon Bay Ecological Park
Suncheon Bay Ecological Park (순천만자연생태공원) is a 2004 visitor and education complex at Suncheon Bay, South Korea, a 3,550-hectare Ramsar wetland (2006) famed for its reed beds, hooded cranes, and 1.9 million annual visitors.
Sunda Strait
Sunda Strait (Selat Sunda), sea passage between Java and Sumatra linking the Java Sea and Indian Ocean; 26-110 km wide, ALKI I sea lane, Krakatau volcanism, 1883 and 2018 tsunamis, 1942 naval battle.
Sunda Trench
Sunda Trench, also called Java Trench: oceanic trench south and west of Sumatra and Java in the eastern Indian Ocean, over 3200 km long, maximum depth 7290 m, formed by Indo-Australian Plate subduction at 60–73 mm/yr.
Sungei Buloh Wetland Reserve
Sungei Buloh Wetland Reserve is Singapore's first ASEAN Heritage Park, a 202-hectare wetland reserve in northwest Singapore with mangroves, mudflats and over 200 bird species, opened in 1993 and gazetted in 2002.
Sura (landform)
Sura (Сура) is a right tributary of the Volga in Russia, 841 km long with a 67,500 km² basin, rising on the Volga Upland and entering the Cheboksary Reservoir at Vasilsursk; distinct from India's Suru River.
Surigao Strait
Surigao Strait is a Philippine strait between Leyte, Panaon, Dinagat, and Mindanao linking the Pacific to Leyte Gulf and the Mindanao Sea; a shipping route with 5–6 knot tidal streams and site of the 1944 night battle.
Susquehanna
Susquehanna River, largest Chesapeake Bay tributary, flows through Pennsylvania and Maryland; ~38,300 cfs average discharge, 71,250 km² watershed, four lower-river hydroelectric dams including Conowingo, named for the Susquehannock people.
Susquehanna River
Susquehanna River: 444-mile river from Otsego Lake, Cooperstown, NY, to Chesapeake Bay at Havre de Grace, MD; largest US river entirely within the country draining to the Atlantic; 27,500 sq mi basin; Conowingo, Holtwood, Safe Harbor dams.
Susquehanna River Basin Commission
The Susquehanna River Basin Commission (SRBC) is a federal-interstate agency regulating the Susquehanna River Basin's water resources under a 1970 compact, headquartered in Harrisburg, Pennsylvania.
Sutherland Falls
Sutherland Falls (Te Tau-tea) is a 580 m three-leap waterfall from Lake Quill to the Arthur Valley in Fiordland, New Zealand, discovered by Donald Sutherland in 1880 and visited via a side trip from the Milford Track.
Sutlej (सतलुज)
Sutlej (सतलुज, Satluj), easternmost and longest of the five Punjab rivers, an Indus tributary rising in Tibet at 4,572 m, dammed by Bhakra, allocated to India under the 1960 Indus Waters Treaty, joining the Indus via the Panjnad near Mithankot.
Suur Väin
Suur Väin, the Suur Strait, is the major strait in western Estonia between Muhu Island and the mainland, linking the Väinameri with the Gulf of Riga.
Suvla
Suvla, also known as Suvla Bay, is a bay on the western coast of the Gallipoli peninsula in Turkey, site of the failed British landing of August 1915.
Swale (landform)
Swale (landform): a shallow open depression lacking a defined channel; also called slack. Covers coastal dune swales between beach ridges, prairie swales, and designed vegetated stormwater channels, from Old Norse svalr.
Swamp
A swamp is a wetland dominated by woody trees or shrubs, distinguished from marshes by vegetation; major types are forested and shrub swamps, including mangrove swamps, with flood-protection and nutrient-removal functions.
Swamps and tall-herb fens in the British National Vegetation Classification system
Swamps and tall-herb fens are NVC vegetation types S1–S28, also called British Plant Communities Volume 4 wetland communities, covering reed-beds, sedge swamps and tall-herb fens used in SSSI and Annex I habitat assessment.
Sweet Track
The Sweet Track is an Early Neolithic timber walkway in the Somerset Levels, England, built 3807/6 BC across about 2 km of reed swamp from Westhay to the Polden Hills; discovered in 1970 by peat digger Ray Sweet, it is Britain's oldest known timber trackway and a Scheduled Monument.
Symi (Σύμη)
Symi (Σύμη), Greek Dodecanese island 12 miles northwest of Rhodes near the Turkish coast; no airport, ferry access only. Known for neoclassical Gialos harbor, 500-step Kali Strata, world's largest historic sponge fleet, and 1971 protected-settlement status.
Syr Darya (سیردریا)
Syr Darya (سیردریا), ancient Jaxartes, is a major Central Asian river rising in Kyrgyzstan and flowing to the Aral Sea; heavily diverted for Soviet irrigation, it drove the Aral's shrinkage and is now managed under transboundary agreements.
Syvash
Syvash (Сиваш), the Rotten or Putrid Sea, is the world's largest hypersaline lagoon (about 2,560 km²) between Crimea and the Ukrainian mainland, separated from the Sea of Azov by the Arabat Spit; its salinity fell under North Crimean Canal inflow and rose sharply after the canal's 2014 closure.
Szczecin Lagoon
Szczecin Lagoon (Zalew Szczeciński, Oder Lagoon) is a 687 km² shallow oligohaline lagoon on the Poland–Germany border at the Oder mouth, connected to the Baltic by the Świna, Peene, and Dziwna straits and heavily eutrophied.
Széchenyi thermal bath
Széchenyi Thermal Bath (Széchenyi Gyógyfürdő), Budapest's largest medicinal bath in City Park, opened 1913 from Győző Czigler's Neo-Baroque design, fed by artesian wells drilled by Vilmos Zsigmondy, with 18 pools.
Taba, Egypt
Taba (طابا) is a small Egyptian resort town on the Gulf of Aqaba beside Eilat, Israel, with a 24/7 border crossing. Known for the 1906 Taba incident and the 1982–1989 Egypt–Israel boundary arbitration that returned it to Egypt on 15 March 1989.
Table Bay Nature Reserve
The Table Bay Nature Reserve is an 880-hectare protected wetland area on the Table Bay coast of Cape Town, South Africa, managed by the City of Cape Town.
Tagus
Tagus (Tajo, Tejo): longest river of the Iberian Peninsula, rising in Spain's Sierra de Albarracín and flowing about 1,000–1,100 km to the Atlantic at Lisbon; heavily dammed, with the Tagus-Segura transfer and Spain-Portugal water disputes.
Tahquamenon Falls
Tahquamenon Falls: pair of waterfalls on the Tahquamenon River in Michigan's Upper Peninsula; Upper Falls over 200 feet wide, among the largest east of the Mississippi after Niagara, within Michigan's second-largest state park, dedicated 1947.
Tai
Tai (太湖, Taihu, Lake Tai) is China's third-largest freshwater lake, a shallow 2,338 km2 lake in the Yangtze delta spanning Jiangsu and Zhejiang, known for eutrophication, cyanobacteria blooms, and the 2007 Wuxi water crisis.
Taiwan Strait (台湾海峡)
Taiwan Strait (台湾海峡), also called the Formosa Strait, is a 180-km-wide, ~60-m-deep sea corridor between mainland China and Taiwan linking the East China and South China Seas, with monsoon-driven currents, heavy shipping, and fisheries.