scholarly journals Understanding mass fluvial erosion along a bank profile: using PEEP technology for quantifying retreat lengths and identifying event timing

2017 ◽  
Vol 42 (11) ◽  
pp. 1717-1732 ◽  
Author(s):  
A. N. Thanos Papanicolaou ◽  
Christopher G. Wilson ◽  
Achilles G. Tsakiris ◽  
Tommy E. Sutarto ◽  
Fabienne Bertrand ◽  
...  
Keyword(s):  
Fluvial Erosion ◽  
Event Timing ◽  
Bank Profile

The Effect of Event Timing Characteristics on Causal Contingency Learning

2004 ◽  
Author(s):  
Marci Sammons ◽  
Sharon Mutter ◽  
Leslie Plumlee ◽  
Laura Strain
Keyword(s):  
Contingency Learning ◽  
Event Timing

APPLICATION OF PORTABLE XRF TO STRATIGRAPHIC STUDIES AND EVENT TIMING IN IOWA GLACIAL DEPOSITS

2019 ◽  
Author(s):  
Stephanie Tassier-Surine ◽  
◽  
Phillip J. Kerr ◽  
Kathleen R. Goff ◽  
Nick Lefler
Keyword(s):  
Portable Xrf ◽  
Glacial Deposits ◽  
Event Timing

Bank Stability Analysis for Fluvial Erosion and Mass Failure

2014 ◽  
Author(s):  
A. N. Thanos Papanicolaou ◽  
Tommy Sutarto ◽  
Christopher G. Wilson ◽  
Eddy J. Langendoen
Keyword(s):  
Stability Analysis ◽  
Bank Stability ◽  
Fluvial Erosion ◽  
Mass Failure

Trajectory Planning and Prediction Guidance Based on the Moon-Earth Return Reentry Dynamics

2012 ◽  
Vol 625 ◽  
pp. 100-103
Author(s):  
Biao Zhao ◽  
Nai Gang Cui ◽  
Ji Feng Guo ◽  
Ping Wang
Keyword(s):  
Monte Carlo Analysis ◽  
The Moon ◽  
Accuracy Control ◽  
Entry Guidance ◽  
On Line ◽  
Acceleration Method ◽  
Path Constraint ◽  
Predictor Corrector ◽  
Precision Landing ◽  
Bank Profile

For the lunar return mission, a concern of the entry guidance requirement is the full flight envelope applicability and landing accuracy control. A concise numeric predictor-corrector (NPC) entry guidance (NPCEG) algorithm is developed for this requirement. It plans a real-time trajectory on-line by modulating the linear parameterized bank profile. To meet the path constraint, we propose an integrated guidance strategy which combines NPC method with an analytical constant drag acceleration method. Monte Carlo analysis shows that the algorithm is sufficiently robust to allow precision landing with a delivery error of less than 2.0 km for the entire between 2,500 km and 10,000 km range.

scholarly journals Change in heart period: A function of sensorimotor event timing within the cardiac cycle

1977 ◽  
Vol 5 (3) ◽  
pp. 383-393 ◽  
Author(s):  
Beatrice C. Lacey ◽  
John I. Lacey
Keyword(s):  
Cardiac Cycle ◽  
Heart Period ◽  
Event Timing

Holocene deltaic sedimentation along an emerging coast: Nastapoka River delta, eastern Hudson Bay, Quebec

2002 ◽  
Vol 39 (4) ◽  
pp. 505-518 ◽  
Author(s):  
Caroline Lavoie ◽  
Michel Allard ◽  
Philip R Hill
Keyword(s):  
River Delta ◽  
Laurentide Ice Sheet ◽  
Hudson Bay ◽  
Fluvial Erosion ◽  
Fine Grained ◽  
Isostatic Rebound ◽  
Geophysical Surveys ◽  
Deltaic Sedimentation ◽  
Forced Regression ◽  
Natural Laboratory

Eastern Hudson Bay is characterized by falling relative sea level as a result of post-glacial isostatic rebound, which makes the region a natural laboratory for rapid forced regression, where the evolution of deltaic systems and offshore sedimentation patterns can be studied. A multidisciplinary approach involving airphoto analysis, offshore geophysical surveys, sediment coring, and facies and diatom analyses was used in this study of the Nastapoka River delta. The delta has formed as a result of the fluvial erosion of emerged Quaternary sediments but is mainly subaqueous. Offshore, in the prodelta zone, the oldest deposits are glaciomarine, laid down when the ice front of the receding Laurentide ice sheet stood on the Nastapoka hills some 7700–6800 years BP. Lateral equivalents of this glaciomarine unit are presently exposed on land. The shallow-water platform of the delta shows a thin surficial unit of wave-worked sand that overlies fine-grained, deeper water deposits derived from erosion of clay soils in the river catchment a few centuries ago, probably during periods of intense thermokarst activity. As the isostatic uplift continues, the deltaic platform will gradually emerge and be incised by the river channel.

scholarly journals Holocene uplift and rapid fluvial erosion of Iceland: A record of post-glacial landscape evolution

2019 ◽  
Vol 505 ◽  
pp. 118-130 ◽  
Author(s):  
Gaia Stucky de Quay ◽  
Gareth G. Roberts ◽  
Dylan H. Rood ◽  
Victoria M. Fernandes
Keyword(s):  
Landscape Evolution ◽  
Fluvial Erosion

scholarly journals Fluvial Erosion Characterisation in the Juqueriquerê River Channel, Caraguatatuba, Brazil

2016 ◽  
Vol 5 (2) ◽  
pp. 105 ◽  
Author(s):  
Victor F. Velázquez ◽  
Viviane D. A. Portela ◽  
José M. Azevedo Sobrinho ◽  
Antonio C. M. Guedes ◽  
Mikhaela A. J. S. P Letsch
Keyword(s):  
River Channel ◽  
Crystalline Basement ◽  
Morphological Features ◽  
Igneous Rocks ◽  
Effective Capacity ◽  
River Systems ◽  
Field Surveys ◽  
Fluvial Erosion ◽  
Excellent Opportunity ◽  
Different Types

The Juqueriquerê River channel was formed in a Precambrian crystalline basement. The lithological association is largely composed of ancient metamorphic and igneous rocks, with several overlapping tectonic episodes. Field surveys along the upper and middle course allowed for cataloguing a wide variety of fluvial erosion features. A sizable amount of morphological features have been sculpted on different types of rocks, including furrows, potholes, percussion marks, polishing and smoothing boulders as the most representative. The sizes and shapes of these scour marks are also diverse, and their study has provided important results for better understanding the erosive processes. Given their wide variety, the erosive morphological features offer an excellent opportunity to explore the mechanisms of fluvial erosion and evaluate their effective capacity to remove cobbles and boulders in bedrock river systems.

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