peat compaction floodplain

Peat Compaction Floodplain

Effects of peat compaction on delta evolution: A review on ...

Peat compaction and formation are key processes in delta evolution, especially in distal parts with relatively high accommodation rates where thick peat layers are formed in the flood basins. The way and magnitude by which peat compaction and formation influence delta architecture strongly depend on temporal and spatial scale.

(PDF) Factors Controlling Peat Compaction in Alluvial ...

Subsidence due to peat compaction may have important implications in alluvial floodplains, because it leads to wetland loss, land inundation, and damage to buildings and infrastructure.

FACTORS CONTROLLING PEAT COMPACTION IN ALLUVIAL ...

The dominant factors influencing peat compaction are: (1) organic- matter content, (2) stress imposed on a peat layer, and, to a lesser extent, (3) plant species composition. In an alluvial setting,

Factors Controlling Peat Compaction in Alluvial ...

Sheet-like splay deposits initially compact underlying peat uniformly, whereas differential compaction commonly occurs beneath natural levees due to lateral variations in sediment thickness. Subsidence due to peat compaction creates additional accommodation space and hence locally enhances floodplain sedimentation rates.

(PDF) Factors controlling peat compaction in alluvial ...

Subsidence due to peat compaction may have important implications in alluvial floodplains, because it leads to wetland loss, land inundation, and damage to buildings and infrastructure. Furthermore, it potentially influences spatial and temporal

Peat formation in the context of the development of the ...

However, in systems where the toe of the drainage line is gradually rising owing to clastic sedimentation on the adjacent floodplain, the estimated rate of peat accumulation must be more rapid as peat accumulation integrates compaction rate, feedback of peat formation on the elevation of the water table, and a gradually rising water level from ...

Peat - Wikipedia

Peat (/ p iː t /), also known as turf (/ t ɜːr f /), is an accumulation of partially decayed vegetation or organic matter. It is unique to natural areas called peatlands, bogs, mires, moors, or muskegs. The peatland ecosystem is the most efficient carbon sink on the planet, because peatland plants capture CO 2 naturally released from the peat, maintaining an equilibrium.

Depositional record of an avulsive fluvial system ...

Jun 01, 2005 · Two main, mutually linked, processes controlled the evolution of the studied fluvial system: (i) syndepositional compaction of the underlying peat and (ii) avulsions of the channels away from the original floodplain, resulting in formation of a new floodplain.

Earth Science: Chapter 3 Flashcards | Quizlet

Compaction is most significant as a lithification process for sedimentary rocks composed of sand-sized particles. False During metamorphism the material undergoing deformation remains a solid

Conceptual models for short‐eccentricity‐scale climate ...

Jul 26, 2017 · Vertical aggradation within the channel belt prevails because there is sufficient accommodation space and avulsion is not triggered by differential compaction since the high frequency of crevasse splaying prevents significant peat formation on the floodplain. Only minor peat develops on the floodplain during episodes of minimal seasonal ...

Contribution of peat compaction to relative sea-level rise ...

Abstract Modern and forecasted flooding of deltas is accelerated by subsidence of Holocene deposits. Subsidence caused by tectonics, isostasy, sediment compaction and anthropogenic processes, combined with eustatic sea-level rise, results in drowning and increased flood risk within densely populated deltas.

Sanneke van Asselen | Utrecht University - Academia.edu

Peat compaction likely plays an important role in the evolution of alluvial plains, for example by providing extra accommodation space, which affects temporal and spatial fluvial sedimentation patterns. It has also been suggested that differential peat compaction affects floodplain gradients, and hence may affect the occurrence of avulsion.

Middle to late-Holocene decreased fluvial aggradation and ...

Jun 02, 2016 · This study investigated the influence of sea-level and climate changes on the decreased fluvial aggradation and subsequent widespread peat initiation in the middle to late-Holocene in the Ishikari lowland, which is a coastal floodplain formed in response to the postglacial sea-level change.

Soil compaction - Wikipedia

In geotechnical engineering, soil compaction is the process in which a stress applied to a soil causes densification as air is displaced from the pores between the soil grains. When stress is applied that causes densification due to water (or other liquid) being displaced from between the soil grains, then consolidation, not compaction, has occurred.

ICFS 11 - Calgary 2017 - Programme Theme IV

Another example is that both living and dead vegetation, the latter in the form of subsurface peat layers, enhance sediment trapping on the floodplain: (1) living vegetation at the surface affects surface water flows and traps sediment during floods, (2) compaction of subsurface peat layers in the floodplain revitalizes accommodation space for ...

The impact of avulsion on groundwater level and peat ...

Apr 19, 2017 · Basal peat samples come from strata that directly overlie sandy aeolian sediments, minimizing compaction effects in the curves. The basal peats sampled for these reconstructions are swamp peat and fen-edge peat (Alnus peat, that is, alder peat), which form approximately at or slightly below the annual mean groundwater table (Charman, 2002).

Effects of peat compaction on delta evolution ... - DeepDyve

Jan 01, 2009 · Read "Effects of peat compaction on delta evolution: A review on processes, responses, measuring and modeling, Earth-Science Reviews" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

EFFECT OF ORGANIC CONTENTS ON THE COMPACTION AND …

compaction and shear strength characteristics of the soil has been discussed in this chapter. The first part of the literature review deals with the physical characteristics and index properties of organic soil (peat) and the second part describe the compaction and shear strength properties of peat.

Effect of urban soil compaction on infiltration rate

Inadvertent soil compaction at the urban lot scale is a process that reduces infiltration rates, which can lead to increased stormwater runoff. This is particularly important in low impact development strategies where stormwater is intended to infiltrate rather than flow through a traditional stormwater network to a …

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