Results 61 to 70 of about 12,498 (209)

Flood magnitude-frequency and lithologic control on bedrock river incision in post-orogenic terrain [PDF]

, 2006
Mixed bedrock-alluvial rivers - bedrock channels lined with a discontinuous alluvial cover - are key agents in the shaping of mountain belt topography by bedrock fluvial incision.
Annandale, Ashworth, Baker, Baker, Baker, Baker, Baker, Baker, Baldwin, Bathurst, Bathurst, Bathurst, Beaumont, Bierman, Brayshaw, Brierley, Buffington, Buffington, Bureau of Meteorology, Carling, Chin, Church, Cordery, Costa, Dietrich, Emmett, Feldman, Ferguson, Gale, Gasparini, Gibson, Gilbert, Gomez, Grant, Grant, Hack, Hack, Hancock, Hey, Hill, Hovius, Howard, Howard, Howard, Howard, Howard, Inderbitzen, Jackson, Jansen, Jarrett, John D. Jansen, Kieffer, Knighton, Knighton, Komar, Komar, Langbein, Mabbutt, MacQueen, Manning, Martin, Merritts, Miller, Miller, Miller, Molnar, Neef, O'Connor, Parker, Parker, Pazzaglia, Pickup, Pilgrim, Prestegaard, Rana, Raymo, Rhoads, Rice, Schick, Schoklitsch, Schumm, Seidl, Sklar, Sklar, Small, Snyder, Sternberg, Stock, Thompson, Tinkler, Tinkler, Troutman, Tucker, Tucker, van de Graaf, van der Beek, Veevers, Ward, Wende, Whipple, Whipple, Whipple, Whittaker, Wilford, Willet, Williams, Wohl, Wohl, Wohl, Wohl, Wolman, Wolman   +111 more
core   +1 more source

Interaction of internal waves with the seafloor on the Namibian shelf (SE Atlantic Ocean): Implications for seafloor geomorphology

Earth Surface Processes and Landforms, Volume 51, Issue 3, March 2026.
Over geological timescales, internal waves play a significant role in shaping the seafloor morphology. They generate nepheloid layers, slope‐parallel channels and escarpments with erosional surfaces. Abstract The long‐term impact of internal waves on sedimentation and seafloor geomorphology remains poorly constrained.
Elda Miramontes, Claudia Wienberg, Tilmann Schwenk, Christian Mohn, Nadezhda Lagunova, Ling Wang, Paul Wintersteller, Jürgen Titschack, Victor Oki, Ulrike Hanz, Furu Mienis, Sabrina Köper, Maren Walter, Dierk Hebbeln   +13 more
wiley   +1 more source

Role of Synthetic Biofilms in Bed Evolution and the Formation of Sedimentary Structures

Geophysical Research Letters
Microbes are known to shape topographies; however, mechanisms of biofilm‐sediment interactions and the dynamic evolution of biofilm‐covered bedforms remain poorly understood. Here, we explore the effects of synthetic biofilms on the geometry and temporal
Willian R. Assis, Lian Shen, Judy Q. Yang   +2 more
doaj   +1 more source

Algal glycans promote microbial turnover of organic matter through stabilization of subtidal permeable sandy sediments

Limnology and Oceanography, Volume 71, Issue 3, March 2026.
Abstract Permeable sands on continental shelves host microbial communities that drive organic carbon turnover, oxygen fluxes and nitrogen loss. Advective porewater flow associated with sedimentary bedforms maintains these rates and fluxes. Modeling and laboratory studies suggest that advective porewater flow is tightly coupled to bedform stability ...
Fabian Lange, Soeren Ahmerkamp, Aman Akeerath Mundanatt, Farooq Moin Jalaluddin, Gesa Schulz, Daniela Voß, Oliver Zielinski, Ulrike Hanz, Gaute Lavik, Hannah K. Marchant, Jan‐Hendrik Hehemann, Timothy G. Ferdelman, Moritz Holtappels, Marcel M. M. Kuypers   +13 more
wiley   +1 more source

Efficient Data Assimilation Method for Optimizing Prediction of Flow Field and Sediment Transport in Open Channel

River Research and Applications, Volume 42, Issue 3, Page 580-593, March 2026.
ABSTRACT Accurately predicting open‐channel flow under complex conditions remains a challenge. This study introduces a novel synergetic self‐adaptive data assimilation (DA) framework, using a proportional‐integral‐derivative (PID) controller to dynamically calibrate the bed roughness parameter k s in a shallow‐water equation model (via the momentum ...
M. Almetwally Ahmed, S. Samuel Li
wiley   +1 more source

Large‐Scale Submarine Sediment Waves at Macauley Caldera Volcano: In Situ Evidence of High‐Flux, Syn‐Eruptive Submarine Transport

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 3, March 2026.
Abstract Two sediment cores were collected from a submarine sediment wave field on the flank of Macauley volcano. Combined with seismic reflection surveys and numerical modeling, we present an integrated model of the formation of large‐scale, eruption‐fed, submarine sediment waves. The sediment waves are large (>100 m high, 1.5 km wide, tens of km long)
Shannon E. Frey, Martin Jutzeler, Matthieu Cartigny, Rebecca J. Carey   +3 more
wiley   +1 more source

New Bedform Phase Diagrams and Discriminant Functions for Formative Conditions of Bedforms in Open‐Channel Flows [PDF]

Journal of Geophysical Research: Earth Surface, 2017
Understanding of the formative conditions of fluvial bedforms is significant for both river management and geological studies. Diagrams showing bedform stability conditions have been widely used for the analyses of sedimentary structures. However, the use of discriminants to determine the boundaries of different bedforms regimes has not yet been ...
Koji Ohata, Hajime Naruse, Miwa Yokokawa, Enrica Viparelli   +3 more
openaire   +2 more sources

Visualizing the Geology of Lake Trout Spawning Sites: Northern Lake Michigan [PDF]

, 2004
Geologists and biologists are working together to understand the links between lake floor geology (composition and shape) and the distribution of lake trout throughout their life cycle. Lake floor geology is one of the main factors determining where lake
Barnes, Peter, Dartnell, Peter, Gardner, James V., Lee, Kristen   +3 more
core   +1 more source

Seabed corrugations beneath an Antarctic ice shelf revealed by autonomous underwater vehicle survey: Origin and implications for the history of Pine Island Glacier [PDF]

, 2013
Ice shelves are critical features in the debate about West Antarctic ice sheet change and sea level rise, both because they limit ice discharge and because they are sensitive to change in the surrounding ocean.
Dutrieux, Pierre, Graham, Alastair, Greenwood, Sarah L., Gyllencreutz, Richard, Jenkins, Adrian, Larter, Robert D., Nitsche, Frank O., Vaughan, David G.   +7 more
core   +4 more sources

Influence of Biofilms and Extracellular Polymeric Substances on High‐Frequency Acoustic Backscatter

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 3, March 2026.
Abstract Acoustic Backscatter Technique has been used to detect underwater targets and characterize seabed and river floor sediment properties. Microbial biofilms, consisting of microorganisms enclosed in Extracellular Polymeric Substances (EPS), have the potential to modify acoustic backscatter by altering the sediment topography, permeability, and ...
Willian R. Assis, Imtisaal Naeem, Lian Shen, Judy Q. Yang   +3 more
wiley   +1 more source