Search Results - "Lamb, Michael P"

Backwater and river plume controls on scour upstream of river mouths: Implications for fluvio-deltaic morphodynamics by Lamb, Michael P., Nittrouer, Jeffrey A., Mohrig, David, Shaw, John

“…Sediment flux from rivers to oceans is the fundamental driver of fluvio‐deltaic morphodynamics and continental margin sedimentation, yet sediment transport…”
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Is the critical Shields stress for incipient sediment motion dependent on channel-bed slope? by Lamb, Michael P., Dietrich, William E., Venditti, Jeremy G.

“…Data from laboratory flumes and natural streams show that the critical Shields stress for initial sediment motion increases with channel slope, which indicates…”
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Amplification of downstream flood stage due to damming of fine-grained rivers by Ma, Hongbo, Nittrouer, Jeffrey A., Fu, Xudong, Parker, Gary, Zhang, Yuanfeng, Wang, Yuanjian, Wang, Yanjun, Lamb, Michael P., Cisneros, Julia, Best, Jim, Parsons, Daniel R., Wu, Baosheng

“…River dams provide many benefits, including flood control. However, due to constantly evolving channel morphology, downstream conveyance of floodwaters…”
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Testing morphodynamic controls on the location and frequency of river avulsions on fans versus deltas: Huanghe (Yellow River), China by Ganti, Vamsi, Chu, Zhongxin, Lamb, Michael P., Nittrouer, Jeffrey A., Parker, Gary

“…A mechanistic understanding of river avulsion location and frequency is needed to predict the growth of alluvial fans and deltas. The Huanghe, China, provides…”
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A physical model of the high‐frequency seismic signal generated by debris flows by Farin, Maxime, Tsai, Victor C., Lamb, Michael P., Allstadt, Kate E.

“…We propose a physical model for the high‐frequency (>1 Hz) spectral distribution of seismic power generated by debris flows. The modeled debris flow is assumed…”
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Abrupt drainage basin reorganization following a Pleistocene river capture by Fan, Niannian, Chu, Zhongxin, Jiang, Luguang, Hassan, Marwan A., Lamb, Michael P., Liu, Xingnian

“…River capture is a dramatic natural process of internal competition through which mountainous landscapes evolve and respond to perturbations in tectonics and…”
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Backwater controls of avulsion location on deltas by Chatanantavet, Phairot, Lamb, Michael P., Nittrouer, Jeffrey A.

“…River delta complexes are built in part through repeated river‐channel avulsions, which often occur about a persistent spatial node creating delta lobes that…”
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Similarity of stream width distributions across headwater systems by Allen, George H., Pavelsky, Tamlin M., Barefoot, Eric A., Lamb, Michael P., Butman, David, Tashie, Arik, Gleason, Colin J.

“…The morphology and abundance of streams control the rates of hydraulic and biogeochemical exchange between streams, groundwater, and the atmosphere. In large…”
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The Seismic Signature of Debris Flows: Flow Mechanics and Early Warning at Montecito, California by Lai, Voon Hui, Tsai, Victor C., Lamb, Michael P., Ulizio, Thomas P., Beer, Alexander R.

“…Debris flows are concentrated slurries of water and sediment that shape the landscape and pose a major hazard to human life and infrastructure. Seismic ground…”
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Sediment Entrainment and Slump Blocks Limit Permafrost Riverbank Erosion by Douglas, Madison M., Dunne, Kieran B. J., Lamb, Michael P.

“…Climatic warming and permafrost thaw are predicted to increase Arctic riverbank erosion, threatening communities and accelerating sediment, carbon and nutrient…”
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Rapid formation of a modern bedrock canyon by a single flood event by Lamb, Michael P, Fonstad, Mark A

“…Deep river canyons are thought to form slowly over geological time (see, for example, ref. 1), cut by moderate flows that reoccur every few years. In contrast,…”
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Pre‐Vegetation, Single‐Thread Rivers Sustained by Cohesive, Fine‐Grained Bank Sediments: Mesoproterozoic Stoer Group, NW Scotland by Valenza, Jeffery M., Ganti, Vamsi, Whittaker, Alexander C., Lamb, Michael P.

“…A Silurian shift in fluvial stratigraphic architecture, coincident with the appearance of terrestrial vegetation in the fossil record, is traditionally cited…”
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Quantifying Flow Velocities in River Deltas via Remotely Sensed Suspended Sediment Concentration by Donatelli, Carmine, Passalacqua, Paola, Wright, Kyle, Salter, Gerard, Lamb, Michael P., Jensen, Daniel, Fagherazzi, Sergio

“…Deltas are fragile ecosystems threatened by sea‐level rise, sediment starvation, and subsidence. Erosional/depositional processes in these systems mainly…”
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A model for fluvial bedrock incision by impacting suspended and bed load sediment by Lamb, Michael P., Dietrich, William E., Sklar, Leonard S.

“…A mechanistic model is derived for the rate of fluvial erosion into bedrock by abrasion from uniform size particles that impact the bed during transport in…”
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Amphitheater-headed canyons formed by megaflooding at Malad Gorge, Idaho by Lamb, Michael P., Mackey, Benjamin H., Farley, Kenneth A.

“…Many bedrock canyons on Earth and Mars were eroded by upstream propagating headwalls, and a prominent goal in geomorphology and planetary science is to…”
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Autogenic Formation of Bimodal Grain Size Distributions in Rivers and Its Contribution to Gravel‐Sand Transitions by An, Chenge, Parker, Gary, Venditti, Jeremy G., Lamb, Michael P., Hassan, Marwan A., Miwa, Hiroshi, Fu, Xudong

“…Riverbeds often fine downstream, with a gravel‐bedded reach, a relatively abrupt gravel‐sand transition (GST), and a sand‐bedded reach. Underlying this…”
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Monitoring Water Level Change and Seasonal Vegetation Change in the Coastal Wetlands of Louisiana Using L-Band Time-Series by Liao, Tien-Hao, Simard, Marc, Denbina, Michael, Lamb, Michael P.

“…Coastal wetlands are productive ecosystems driven by highly dynamic hydrological processes such as tides and river discharge, which operate at daily to…”
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Landslide velocity, thickness, and rheology from remote sensing: La Clapière landslide, France by Booth, Adam M., Lamb, Michael P., Avouac, Jean-Philippe, Delacourt, Christophe

“…Quantifying the velocity, volume, and rheology of deep, slow‐moving landslides is essential for hazard prediction and understanding landscape evolution, but…”
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Self‐formed waterfall plunge pools in homogeneous rock by Scheingross, Joel S., Lo, Daniel Y., Lamb, Michael P.

“…Waterfalls are ubiquitous, and their upstream propagation can set the pace of landscape evolution, yet no experimental studies have examined waterfall plunge…”
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Deltaic deposits at Aeolis Dorsa: Sedimentary evidence for a standing body of water on the northern plains of Mars by DiBiase, Roman A., Limaye, Ajay B., Scheingross, Joel S., Fischer, Woodward W., Lamb, Michael P.

“…A fundamental long‐standing question regarding Mars history is whether the flat and low‐lying northern plains ever hosted an ocean. The best opportunity to…”
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