Results 1 to 10 of about 2,890 (164)

Underwater noise from submarine turbidity currents [PDF]

JASA Express Letters, 2021
Noise from turbidity currents flowing down the face of a fjord delta was measured underwater at frequencies from 1 to 1200 kHz. The noise spectra are consistent with sound generation by collisions among sand-sized particles.
Alex E. Hay, M. G. Hatcher, J. E. Hughes Clarke   +2 more
doaj   +4 more sources

Powerful turbidity currents driven by dense basal layers [PDF]

Nature Communications, 2018
The structure of turbidity currents has remained unresolved mainly due to lack of observations. Here the authors present data from a high-resolution monitoring array deployed for 18 months over Monterey Bay, that suggests turbidity currents are driven by
Charles K. Paull, Peter J. Talling, Katherine L. Maier, Daniel Parsons, Jingping Xu, David W. Caress, Roberto Gwiazda, Eve M. Lundsten, Krystle Anderson, James P. Barry, Mark Chaffey, Tom O’Reilly, Kurt J. Rosenberger, Jenny A. Gales, Brian Kieft, Mary McGann, Steve M. Simmons, Mike McCann, Esther J. Sumner, Michael A. Clare, Matthieu J. Cartigny   +20 more
doaj   +2 more sources

First wide-angle view of channelized turbidity currents links migrating cyclic steps to flow characteristics [PDF]

Nature Communications, 2016
The basal structure of turbidity currents and their association with crescent-shaped bedforms has not been observed at the field scale. Here, the author presents views of turbidity currents moving over and modifying such bedforms in a manner consistent ...
John E. Hughes Clarke
doaj   +2 more sources

Direct observations of bedform migration driven by turbidity currents in a lacustrine channel [PDF]

Scientific Reports
Turbidity currents, gravity-driven sediment-laden flows, govern material transport and shape underwater landscapes across diverse environments. While extensively studied in marine settings, their dynamics in freshwater systems remain underexplored.
Gaétan Sauter, Damien Bouffard, Stefano C. Fabbri, Koen Blanckaert, Flavio S. Anselmetti, Katrina Kremer   +5 more
doaj   +2 more sources

Ocean-bottom seismometers reveal surge dynamics in Earth’s longest-runout sediment flows [PDF]

Communications Earth & Environment
Turbidity currents carve Earth’s deepest canyons, form Earth’s largest sediment deposits, and break seabed telecommunications cables. Directly measuring turbidity currents is notoriously challenging due to their destructive impact on instruments within ...
Pascal Kunath, Peter J. Talling, Dietrich Lange, Wu-Cheng Chi, Megan L. Baker, Morelia Urlaub, Christian Berndt   +6 more
doaj   +2 more sources

Inverse modeling of turbidity currents using an artificial neural network approach: verification for field application [PDF]

Earth Surface Dynamics, 2021
Although in situ measurements in modern frequently occurring turbidity currents have been performed, the flow characteristics of turbidity currents that occur only once every 100 years and deposit turbidites over a large area have not yet been elucidated.
H. Naruse, K. Nakao
doaj   +1 more source

Transportational Cyclic Steps Created by Submarine Long-Runout Turbidity Currents

Geosciences, 2022
In recent years, it has become a common understanding among researchers that one of the significant agents for forming a variety of submarine geomorphologies is turbidity currents that travel long distances, so-called long-runout turbidity currents.
Zhuyuan Wu, Norihiro Izumi
doaj   +1 more source

Effect of flocculation on turbidity currents

Frontiers in Earth Science, 2022
Flocculation between inorganic sediment, salt ions and microscopic organic matter present in the marine environment might play an important role in the dynamics of turbidity currents.
W. Ali, D. Enthoven, A. Kirichek, C. Chassagne, R. Helmons, R. Helmons   +5 more
doaj   +1 more source

Control of ambient fluid on turbidity current evolution: Mechanisms, feedbacks and influencing factors

Geosystems and Geoenvironment, 2023
Turbidity currents are important ocean dynamic processes that influence sediment transport, ocean engineering, and marine environments. As a turbidity current evolves, its macroscopic and mesoscopic properties are controlled by ambient fluid mechanisms ...
Xiaolei Liu, Junkai Sun, Yang Lu, Xingsen Guo   +3 more
doaj   +1 more source

Flow Behavior of Ponded Turbidity Currents [PDF]

Journal of Sedimentary Research, 2015
Sea floor topography can constrict, deflect or reflect turbidity currents resulting in a range of distinctive deposits. Where flows rebound off slopes and a suspension cloud collects in an enclosed basin, ponded or contained turbidites are deposited. Ponded turbidites have been widely recognised in slope mini-basins and on small, structurally-confined ...
Patacci M, Haughton PDW, Mccaffrey WD
openaire   +2 more sources