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all geography including DSDP/ODP Sites and Legs
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nitrogen (1)
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oxygen
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O-18/O-16 (4)
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sulfur
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fossils
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Chordata
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Vertebrata
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Pisces
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Osteichthyes
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Tetrapoda
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Mammalia
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Multituberculata (2)
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Theria
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Artiodactyla
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Ruminantia
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Bison (1)
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Primates (1)
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Taeniodonta (1)
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Metatheria
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Marsupialia (1)
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Reptilia
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Testudines
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Cryptodira (1)
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Diapsida
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Archosauria
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Crocodilia (1)
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dinosaurs
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Ornithischia
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Ceratopsidae
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Triceratops (3)
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Ornithopoda
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Hadrosauridae (1)
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ichnofossils
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Ophiomorpha
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Ophiomorpha nodosa (1)
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Rhizocorallium (1)
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Skolithos (1)
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Invertebrata
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Arthropoda
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Mandibulata
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Crustacea
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Ostracoda
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Podocopida
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Insecta
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Pterygota
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Neoptera
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Endopterygota
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Trilobitomorpha
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Cnidaria
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Echinodermata
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Echinozoa
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Mollusca
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Bivalvia
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Ostreoidea
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Cephalopoda
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Ammonoidea
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Ammonites (1)
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Gastropoda (3)
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Protista
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Foraminifera (5)
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Radiolaria (2)
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Vermes
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Annelida (1)
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microfossils
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Conodonta (4)
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palynomorphs
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Dinoflagellata (1)
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miospores
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pollen (6)
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Plantae
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algae
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Chlorophyta
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Chlorophyceae
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Codiaceae
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Halimeda (1)
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Coccolithophoraceae (1)
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diatoms (1)
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Pteridophyta (4)
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Pteropsida (1)
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Spermatophyta
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Angiospermae
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Dicotyledoneae (1)
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Monocotyledoneae (1)
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Gymnospermae
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Coniferales
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Cupressaceae (1)
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Cycadales (1)
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thallophytes (1)
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trails (1)
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geochronology methods
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fission-track dating (1)
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optically stimulated luminescence (4)
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paleomagnetism (3)
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geologic age
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Cenozoic
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Quaternary
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Holocene
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lower Holocene (1)
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middle Holocene (1)
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upper Holocene (2)
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Pleistocene
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Lake Agassiz (7)
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upper Pleistocene
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Weichselian
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upper Weichselian
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Allerod (1)
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Bolling (1)
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Tertiary
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Arikaree Group (1)
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Florissant Lake Beds (1)
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lower Tertiary (1)
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Neogene
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Miocene (1)
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Paleogene
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Chadron Formation (2)
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Eocene
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Golden Valley Formation (4)
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lower Eocene
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Wasatchian (1)
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upper Eocene (1)
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lower Paleogene (1)
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Oligocene
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Brule Formation (2)
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lower Oligocene (1)
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Paleocene
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Bullion Creek Formation (2)
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lower Paleocene
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Danian (2)
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K-T boundary (14)
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Puercan (2)
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Torrejonian (1)
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Ludlow Member (8)
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Sentinel Butte Formation (2)
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Tongue River Member (4)
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Tullock Member (4)
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upper Paleocene
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Clarkforkian (1)
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Tiffanian (2)
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-
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White River Group (3)
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Laurentide ice sheet (1)
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Mesozoic
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Cretaceous
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Dakota Formation (1)
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Lower Cretaceous
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Mannville Group (1)
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Mowry Shale (3)
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Muddy Sandstone (2)
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Skull Creek Shale (2)
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Mancos Shale (1)
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Upper Cretaceous
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Campanian (1)
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Eagle Sandstone (1)
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Fox Hills Formation (9)
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Greenhorn Limestone (1)
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Gulfian
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Eagle Ford Formation (2)
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Hell Creek Formation (26)
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Kirtland Shale (1)
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K-T boundary (14)
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Lance Formation (1)
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Laramie Formation (1)
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Maestrichtian (12)
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Niobrara Formation (6)
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Ojo Alamo Sandstone (1)
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Pierre Shale (3)
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Senonian (9)
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Jurassic
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Bazhenov Formation (1)
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Upper Jurassic
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Haynesville Formation (1)
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-
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Triassic
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Upper Triassic
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Lockatong Formation (1)
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Paleozoic
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Cambrian (3)
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Carboniferous
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Lower Carboniferous
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Dinantian (1)
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-
Mississippian
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Barnett Shale (2)
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Charles Formation (8)
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Lower Mississippian
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Lodgepole Formation (9)
-
Tournaisian
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upper Tournaisian (1)
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-
-
Madison Group (18)
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Mission Canyon Limestone (26)
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Upper Mississippian
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Chesterian (1)
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Heath Formation (2)
-
-
-
Pennsylvanian
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Lower Pennsylvanian
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Morrowan (1)
-
-
-
-
Deadwood Formation (4)
-
Devonian
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Middle Devonian
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Prairie Evaporite (3)
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Winnipegosis Formation (4)
-
-
Upper Devonian
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Birdbear Formation (2)
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Duperow Formation (13)
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Famennian
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Wabamun Group (1)
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Frasnian (1)
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Palliser Formation (1)
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-
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middle Paleozoic (1)
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Minnelusa Formation (1)
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Ordovician
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Middle Ordovician
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Winnipeg Formation (2)
-
-
Upper Ordovician
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Cincinnatian
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Richmondian (1)
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Red River Formation (12)
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-
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Permian
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Guadalupian (1)
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Lower Permian
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Opeche Shale (1)
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Middle Permian (1)
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Rustler Formation (1)
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Upper Permian
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Salado Formation (1)
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Sauk Sequence (1)
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Silurian
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Lower Silurian
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Llandovery
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Interlake Formation (4)
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-
-
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Tensleep Sandstone (1)
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Tippecanoe Sequence (1)
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upper Paleozoic
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Bakken Formation (47)
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Kaskaskia Sequence (3)
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Woodford Shale (1)
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Phanerozoic (3)
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Precambrian
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Archean (1)
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upper Precambrian
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Proterozoic (1)
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igneous rocks
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igneous rocks
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plutonic rocks
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granites
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S-type granites (1)
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pegmatite (1)
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volcanic rocks
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pyroclastics
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metamorphic rocks
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metamorphic rocks
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meteorites (2)
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minerals
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dolomite (9)
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halides
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bromides (1)
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chlorides
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halite (1)
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phosphates
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apatite (1)
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-
silicates
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chain silicates
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amphibole group
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clinoamphibole
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hornblende (1)
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-
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pyroxene group
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clinopyroxene
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diopside (1)
-
-
-
-
framework silicates
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zeolite group
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erionite (1)
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offretite (1)
-
-
-
orthosilicates
-
sorosilicates
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epidote group
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epidote (1)
-
-
-
-
sheet silicates
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clay minerals
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kaolinite (1)
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smectite (3)
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illite (3)
-
mica group
-
biotite (1)
-
-
-
-
sulfates
-
anhydrite (12)
-
-
sulfides
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pyrite (1)
-
-
-
Primary terms
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absolute age (5)
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Asia
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Arabian Peninsula
-
Kuwait (1)
-
-
Far East
-
China
-
Xinjiang China
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Junggar (1)
-
-
-
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Siberia (1)
-
-
bacteria (2)
-
bibliography (1)
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biogeography (4)
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bitumens (1)
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brines (3)
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Canada
-
Eastern Canada
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Quebec (1)
-
-
Elk Point Basin (1)
-
Western Canada
-
Alberta (4)
-
Manitoba (14)
-
Saskatchewan (23)
-
-
-
carbon
-
C-13/C-12 (5)
-
C-14 (5)
-
organic carbon (8)
-
-
Caribbean region
-
West Indies
-
Bahamas (1)
-
-
-
Cenozoic
-
Quaternary
-
Holocene
-
lower Holocene (1)
-
middle Holocene (1)
-
upper Holocene (2)
-
-
Pleistocene
-
Lake Agassiz (7)
-
upper Pleistocene
-
Weichselian
-
upper Weichselian
-
Allerod (1)
-
Bolling (1)
-
-
-
-
-
-
Tertiary
-
Arikaree Group (1)
-
Florissant Lake Beds (1)
-
lower Tertiary (1)
-
Neogene
-
Miocene (1)
-
-
Paleogene
-
Chadron Formation (2)
-
Eocene
-
Golden Valley Formation (4)
-
lower Eocene
-
Wasatchian (1)
-
-
upper Eocene (1)
-
-
lower Paleogene (1)
-
Oligocene
-
Brule Formation (2)
-
lower Oligocene (1)
-
-
Paleocene
-
Bullion Creek Formation (2)
-
lower Paleocene
-
Danian (2)
-
K-T boundary (14)
-
Puercan (2)
-
Torrejonian (1)
-
-
Ludlow Member (8)
-
Sentinel Butte Formation (2)
-
Tongue River Member (4)
-
Tullock Member (4)
-
upper Paleocene
-
Clarkforkian (1)
-
Tiffanian (2)
-
-
-
White River Group (3)
-
-
-
-
Chordata
-
Vertebrata
-
Pisces
-
Osteichthyes
-
Actinopterygii
-
Chondrostei (2)
-
-
-
-
Tetrapoda
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Mammalia
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Multituberculata (2)
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Theria
-
Eutheria
-
Artiodactyla
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Ruminantia
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Bovidae
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Bison (1)
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-
-
-
Primates (1)
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Taeniodonta (1)
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Metatheria
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Marsupialia (1)
-
-
-
-
Reptilia
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Anapsida
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Testudines
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Cryptodira (1)
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-
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Diapsida
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Archosauria
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Crocodilia (1)
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dinosaurs
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Ornithischia
-
Ceratopsia
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Ceratopsidae
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Triceratops (3)
-
-
-
Ornithopoda
-
Hadrosauridae (1)
-
-
-
-
-
-
-
-
-
-
clay mineralogy (5)
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climate change (3)
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crust (4)
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dams (1)
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data processing (11)
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deformation (3)
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diagenesis (30)
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earthquakes (5)
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economic geology (87)
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Europe (1)
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faults (14)
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GeoRef Categories
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Geochronology and geochemistry of deeply buried basement along the western Superior Craton and eastern Trans-Hudson Orogen (North America) Available to Purchase
Modelling shear stress distribution in ice-covered streams Available to Purchase
Abstract Distribution of bed shear stress is the critical factor in regulating the meandering of single-thread rivers. However, the impact of ice cover on bed shear stress is largely unknown. In this study, we develop a theoretical model of cross-stream momentum balance to examine the distribution of bed shear stresses in ice-covered meandering rivers. To validate the theoretical model, field surveys were carried out in a river reach of the Red River in Fargo, North Dakota. Data monitoring was completed using an Acoustic Doppler Current Profiler to obtain time-averaged velocity profiles. Our theoretical model indicates that an ice covering develops high-shear zones near both the inner and outer banks, which might exacerbate sediment transport and enhance bank erosion. Velocity measurements confirm the results of the proposed model and demonstrate a clear impact of meandering river banks on velocity profiles and secondary flow patterns under ice cover. Based on our results, we hypothesize that ice cover increases turbulent stresses near banks, which in turn lead to the enhancement of the bed shear stress. Our work provides new insights into the impact of ice cover on bed shear stress distribution, which could play an important role in driving sediment-transport processes and the long-term morphodynamic evolution of meandering rivers seasonally covered by ice.