7.13 Processes, Transport, Deposition, and Landforms: Quantifying Creep

Heimsath, Arjun M.; Jungers, Matthew

doi:10.1016/b978-0-12-374739-6.00158-5

Cited by 7 publications

(6 citation statements)

References 75 publications

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“…A recent study (Dixon et al ., ), which also reported an uncertain depth dependence of soil production rate at a high altitude soil‐mantled landscape, suggested possible reasons for the uncertain depth dependency: overland flow erosion occurring as a dominant transport process rather than biotically or freeze‐thaw driven hillslope process erosion; soil depths temporarily out of local steady state; and analytical anomalies in the samples. The erosion of the Daegwanryeong Plateau is, however, not dominated by overland flow but by frost creep (Kee, ), and therefore the soil production in the study area is also likely to be controlled by the same processes (Heimsath and Jungers, ). Moreover, unlike the relationship of Dixon et al .…”

Section: Discussionmentioning

confidence: 99%

Erosion of a high‐altitude, low‐relief area on the Korean Peninsula: implications for its development processes and evolution

Byun

Heimsath

Seong

et al. 2015

Earth Surf Processes Landf

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The processes involved in the development of high-altitude, low-relief areas (HLAs) are still poorly understood. Although cosmogenic nuclides have provided insights into the evolution of HLAs interpreted as paleo-surfaces, most studies focus on estimating how slowly they erode and thereby their relative stability. To understand actual development processes of HLAs, we applied several techniques of cosmogenic nuclides in the Daegwanryeong Plateau, a well-known HLA in the Korean Peninsula. Our denudation data from strath terraces, riverine sediments, soils, and tors provide the following conclusions: (1) bedrock incision rate in the plateau (~127 m Myr ) is controlled by the incision rate of the western part of the Korean Peninsula, and is similar to the catchment-wide denudation rate of the plateau (~93 m Myr À1 ); (2) the soil production function we observed shows weak depth dependency that may result from highly weathered bedrock coupled with frequent frost action driven by alpine climate; (3) a discrepancy between the soil production and catchment-wide denudation rates implies morphological disequilibrium in the plateau; (4) the tors once regarded as fossil landforms of the Tertiary do not reflect Tertiary processes; and (5) when compared with those of global paleo-surfaces (<20 m Myr À1 ), our rapid denudation rates suggest that the plateau cannot have maintained its probable initial paleo landscape, and thus is not a paleo-surface. Our data contribute to understanding the surface processes of actively eroding upland landscapes as well as call into question conventional interpretations of supposed paleo-surfaces around the world.

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Section: Discussionmentioning

confidence: 99%

Erosion of a high‐altitude, low‐relief area on the Korean Peninsula: implications for its development processes and evolution

Byun

Heimsath

Seong

et al. 2015

Earth Surf Processes Landf

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“…3a). Commonly, soil creep is described as the process of downslope soil movement driven by a range of processes (Heimsath and Jungers, 2013) such as moisture and/or temperature fluctuations, dissolution and recrystallization of salts (Pawlik and Šamonil, 2018). Solifluction, on the other hand, refers to slow downslope movement of water-saturated debris or soils by cyclic freezing and thawing of water (e.g., Matsuoka, 2001).…”

Section: An Overview Of Lobe-producing Processes On Earthmentioning

confidence: 99%

Small-scale lobate hillslope features on Mars: A comparative 3D morphological study with terrestrial solifluction lobes and zebra stripe lobes

Gastineau

Conway

Johnsson

et al. 2020

Icarus

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Small scale lobes (SSL) on Mars share more morphometric characteristics with terrestrial solifluction lobes than zebra stripe lobes from seismic shaking in the Atacama Desert. 2. Martian SSL only occur on slopes greater than ~10°, a constraint not observed for lobes on Earth and could be due to differences in material properties or thermal regime. 3. Martian SSL differ from terrestrial ones in two other ways: they can have larger dimensions and they tend to occur near the top of the slope as opposed to the bottom.

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“…The main aim of the TCN sampling campaign, which was conducted in March 2018, was to derive process rates (erosion and soil production; e.g. Dunai, 2010;Heimsath and Jungers, 2013) from concentrations of cosmogenic nuclides in sediments and bedrock/saprolite. In this generally arid to semi-arid study area (e.g.…”

Section: Soil Bulk Density Transects From the Altos De Talinay Northmentioning

confidence: 99%

“…the density of soil, saprolite and/or rock (e.g. Heimsath and Jungers, 2013;Lal, 1991). The field-state bulk density (ρ B,f ) of a given excavated soil material is defined as…”

Section: Introductionmentioning

confidence: 99%

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A photogrammetry-based approach for soil bulk density measurements with an emphasis on applications to cosmogenic nuclide analysis

et al. 2020

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Abstract. The quantification of soil bulk density (ρB) is a cumbersome and time-consuming task when traditional soil density sampling techniques are applied. However, it can be important for terrestrial cosmogenic nuclide (TCN) production rate scaling when deriving ages or surface process rates from buried samples, in particular when short-lived TCNs such as in situ 14C are applied. Here, we show that soil density determinations can be made using structure-from-motion multi-view stereo (SfM-MVS) photogrammetry-based volume reconstructions of sampling pits. Accuracy and precision tests as found in the literature and as conducted in this study clearly indicate that photographs taken from both a consumer-grade digital single-lens mirrorless (DSLM) and a smartphone camera are of sufficient quality to produce accurate and precise modelling results, i.e. to regularly reproduce the “true” volume and/or density by >95 %. This finding holds also if a freeware-based computing workflow is applied. The technique has been used to measure ρB along three small-scale (<1 km) N–S transects located in the semi-arid to arid Altos de Talinay, northern central Chile (∼30.5∘ S, ∼71.7∘ W), during a TCN sampling campaign. Here, long-term differences in microclimatic conditions between south-facing and north-facing slopes (SFSs and NFSs, respectively) explain a sharp contrast in vegetation cover, slope gradient and general soil condition patterns. These contrasts are also reflected by the soil density data, generally coinciding with lower densities on SFSs. The largest differences between NFSs and SFSs are evident in the lower portion of the respective slopes, close to the thalwegs. In general, field-state soil bulk densities were found to vary by about 0.6 g cm−3 over a few tens of metres along the same slope. As such, the dataset that was mainly generated to derive more accurate TCN-based process rates and ages can be used to characterise the present-day condition of soils in the study area, which in turn can give insight into the long-term soil formation and prevailing environmental conditions. This implies that the method tested in this study may also being applied in other fields of research and work, such as soil science, agriculture or the construction sector.

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7.13 Processes, Transport, Deposition, and Landforms: Quantifying Creep

Cited by 7 publications

References 75 publications

Erosion of a high‐altitude, low‐relief area on the Korean Peninsula: implications for its development processes and evolution

Erosion of a high‐altitude, low‐relief area on the Korean Peninsula: implications for its development processes and evolution

Small-scale lobate hillslope features on Mars: A comparative 3D morphological study with terrestrial solifluction lobes and zebra stripe lobes

A photogrammetry-based approach for soil bulk density measurements with an emphasis on applications to cosmogenic nuclide analysis

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