On the Dynamics of Subaqueous Debris Flows

Elverlwi, Anders; Harbitz, C. B.; Dimakis, Panagiotis; Mohrig, David; Man, Jeff; Parker, Gary

doi:10.5670/oceanog.2000.20

Cited by 37 publications

(5 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These types of flows are better described by frictional flow models. 5,7,8 Following the description of the rheological regimes as found in Ref. 2, the Bingham rheology yields…”

Section: A Rheological Regimes For the Description Of Submarine Motionmentioning

confidence: 99%

Rheological considerations for the modelling of submarine sliding at Rockall Bank, NE Atlantic Ocean

et al. 2018

View full text Add to dashboard Cite

“…These types of flows are better described by frictional flow models. 5,7,8 Following the description of the rheological regimes as found in Ref. 2, the Bingham rheology yields…”

Section: A Rheological Regimes For the Description Of Submarine Motionmentioning

confidence: 99%

Rheological considerations for the modelling of submarine sliding at Rockall Bank, NE Atlantic Ocean

et al. 2018

View full text Add to dashboard Cite

“…Different styles of deformation provide insight into process, material strength and rheology, basin orientation, and failure conditions (Figure 17;Dott, 1963;Fisher, 1983;Stow, 1986;Elverhoi et al, 2000;Eyles and Eyles, 2000;Strachan, 2002;De Blasio et al, 2006;Moscardelli and Wood, 2008;Tripsanas et al, 2008;Haughton et al, 2009;Mazzanti and De Blasio, 2010;Talling et al, 2012;Auchter et al, 2016;Jablonska et al, 2018). Styles of intrastratal deformation range from creep to slide to slump to debris flow, but often deposits reflect a continuum between these styles (Figure 17; Dott, 1963;Nemec, 1990;Strachan, 2002;Tripsanas et al, 2008;Haughton et al, 2009;Talling et al, 2012).…”

Section: Deformation Style and Charactermentioning

confidence: 99%

“…Creep deposits (sensu Auchter et al, 2016) are observed at many scales on the outcrop (Figure 17A, Figure 16A1, A2, Figure 15A) and are composed primarily of carbonate mudstone facies (F1, F2, F3) that have preserved strata and plastic deformation (folds, boudinage) and little to no brittle failure (Figure 17A, Dott, 1963;Stow, 1986;Moscardelli and Wood, 2008;Auchter et al, 2016). A macro-scale example of creep is documented from Bone Canyon south (Figure 15A), where deformed beds reach dips of 40° with minimal intra-bed disturbance, indicating high strength and coherency of the failing rock material (Dott, 1963;Stow, 1986;Elverhoi et al, 2000;Tripsanas et al, 2008;Talling et al, 2012). The prevalence of multi-scale creep within the carbonate slope facies (Figure 16A1, A2) suggest that the Bone Spring slope was almost always over-steepened and prone to failure (Stow, 1986).…”

Section: Deformation Style and Charactermentioning

confidence: 99%

“…Slumping is differentiated from creep by evidence of brittle failure and high basal shear, suggesting detachment and transportation along the slope (Stow, 1986;Eyles and Eyles, 2000;Strachan, 2002;Moscardelli and Wood, 2008). Deposition of slump deposits on the steep Bone Spring slope indicate high material strength that prevented subsequent failure and/or transformation into a debris flow (Dott, 1963;Fisher, 1983;Elverhoi et al, 2000;De Blasio et al, 2006;Tripsanas et al, 2008).…”

Section: Deformation Style and Charactermentioning

confidence: 99%

See 1 more Smart Citation

Progradational Slope Architecture and Sediment Partitioning in the Outcropping Mixed Siliciclastic-Carbonate Bone Spring Formation, Permian Basin, West Texas

Walker,

Jobe,

Sarg

et al. 2019

2019 AAPG Annual Convention and Exhibition

View full text Add to dashboard Cite

Sediment transport and partitioning are important for understanding slope-building processes in mixed carbonate-siliciclastic sediment routing systems. The Permian-aged Bone Spring Formation, Delaware Basin, west Texas is a mixed carbonate-siliciclastic system that has been extensively studied in its basinal extent, but poorly constrained at its proximal, upper slope segment. In this study, we constrain the stratigraphic architecture of the proximal Bone Spring Fm. outcrops in Guadalupe Mountains National Park in order to delineate the dynamics of carbonate and siliciclastic sediment delivery to the basin. These upper-slope deposits are composed predominantly of fine-grained carbonate slope facies interbedded at various scales with terrigenous hemipelagic and sediment gravity flow deposits. We identify ten slope-building clinothems that vary from siliciclastic-rich to carbonate-rich and are truncated by slope detachment surfaces that record large-scale masswasting of the shelf margin. X-ray fluorescence (XRF) data indicates that slope detachment surfaces contain a higher-than-normal proportion of terrigenous siliciclastic sediment, suggesting failure is triggered by accommodation or sediment supply changes at the shelf margin. Furthermore, a well-exposed siliciclastic-rich clinothem, identified here as the 1st Bone Spring Sand, provides evidence that carbonate and terrigenous sediment were deposited contemporaneously, suggesting both autogenic and allogenic processes influenced the Bone Spring Fm. stratigraphy. This mixing of lithologies at multiple scales and the prevalence of mass-wasting act as a primary control on the stacking patterns of siliciclastic and carbonate lithologies on not only the Bone Spring margin, but also in the distal portion of the Delaware Basin.Disclaimer: This is a confidential document and must not be discussed with others, forward in any form, or posted on websites without the express written consent of the Geological Society of America.

show abstract

“…Iverson [64] notes that the recorded bulk densities of debris flows rarely fall outside a range of 1800-2300 kg m −3 . To account for a submerged landslide we use the apparent density of the mixture: ρ = (ρ ls − ρ w ), where ρ ls is the bulk landslide density and ρ w is the water density (see also [20,65]). For the numerical simulations, we use a reduced density, ρ, for the landslide mass where ρ ls ranges between 1800 and 2300 kg m −3 and ρ w = 1000 kg m −3 .…”

Section: Ranges Of the Calibration Parametersmentioning

confidence: 99%

Statistical emulation of landslide-induced tsunamis at the Rockall Bank, NE Atlantic

et al. 2017

View full text Add to dashboard Cite

Statistical methods constitute a useful approach to understand and quantify the uncertainty that governs complex tsunami mechanisms. Numerical experiments may often have a high computational cost. This forms a limiting factor for performing uncertainty and sensitivity analyses, where numerous simulations are required. Statistical emulators, as surrogates of these simulators, can provide predictions of the physical process in a much faster and computationally inexpensive way. They can form a prominent solution to explore thousands of scenarios that would be otherwise numerically expensive and difficult to achieve. In this work, we build a statistical emulator of the deterministic codes used to simulate submarine sliding and tsunami generation at the Rockall Bank, NE Atlantic Ocean, in two stages. First we calibrate, against observations of the landslide deposits, the parameters used in the landslide simulations. This calibration is performed under a Bayesian framework using Gaussian Process (GP) emulators to approximate the landslide model, and the discrepancy function between model and observations. Distributions of the calibrated input parameters are obtained as a result of the calibration. In a second step, a GP emulator is built to mimic the coupled landslide-tsunami numerical process. The emulator propagates the uncertainties in the distributions of the calibrated input parameters inferred from the first step to the outputs. As a result, a quantification of the uncertainty of the maximum free surface elevation at specified locations is obtained.

show abstract

On the Dynamics of Subaqueous Debris Flows

Cited by 37 publications

References 15 publications

Rheological considerations for the modelling of submarine sliding at Rockall Bank, NE Atlantic Ocean

Rheological considerations for the modelling of submarine sliding at Rockall Bank, NE Atlantic Ocean

Progradational Slope Architecture and Sediment Partitioning in the Outcropping Mixed Siliciclastic-Carbonate Bone Spring Formation, Permian Basin, West Texas

Statistical emulation of landslide-induced tsunamis at the Rockall Bank, NE Atlantic

Contact Info

Product

Resources

About