Peat Compaction Subsidence

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Peat Compaction as a Premier Driver of Mississippi Delta

Compaction is capable of accounting for a large portion of the exceptionally high rates of land surface subsidence relative sea-level rise and coastal wetland loss in the Mississippi Delta and it is likely a significant cause of subsidence in organic-rich low-lying coastal plains elsewhere

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Subsidence Overlay

The Subsidence Overlay is an overlay that shows which places in the 3D world are subject to subsidence due to oxidation and/or compaction of peat The calculations can give result about the subsidence and the effects it has on ground water levels To add a subsidence overlay go to Geo Data - Overlays - Add Subsidence

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Cultivated peat soils lead to land subsidence and emit

Agricultural peatlands require repeated lowering of drainage as subsidence alters the effectiveness of the original drainage system with reduced bearing capacity and lower yields Ultimately long-term agricultural usage of peatland depends on the possibilities to redrain the peat and the quality of underlying substrates and its suitability for long-term agriculture

Get price

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Learning more about land subsidence in Kanis Kamerik and

May 17 2018Compaction in built-up areas oxidation in rural locations The study showed that subsidence occurs every time an additional load is placed on the peat soil or when the groundwater level is lowered 'The relative contributions of the compaction or oxidation of peat vary widely in space and time with compaction playing the largest role in built-up

Get price

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Peat subsidence

Oxidation of peat results in the loss of the greenhouse gas carbon dioxide (CO 2) to the atmosphere Drained peat is also a source of the greenhouse gas nitrous oxide (N 2 O) Peat subsidence may impact on soil processes and have an effect on nutrient cycling and loss therefore impacting on

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Rates and spatial variability of peat subsidence in Acacia

Mar 15 2019Studies of high-latitude peatlands have indicated that secondary subsidence rates also decrease over time due to a combination of i) unmaintained drainage ii) changing water retention characteristics leading to decreased aeration iii) rising mineral content of the residual peat as organic matter is lost and iv) accompanying increases in bulk density as a relatively high proportion of

Get price

Image

Peat Compaction as a Premier Driver of Mississippi Delta

Compaction is capable of accounting for a large portion of the exceptionally high rates of land surface subsidence relative sea-level rise and coastal wetland loss in the Mississippi Delta and it is likely a significant cause of subsidence in organic-rich low-lying coastal plains elsewhere

Get price

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Cause and Effect

The compaction of susceptible aquifer systems caused by excessive groundwater pumping is the single largest cause of subsidence in California and the 5 200 mi 2 affected by subsidence in the San Joaquin Valley since the latter half of the 20th century has been identified as the single largest human alteration of the Earth's surface topography The second largest cause of subsidence in California is the oxidation

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DOSSIER Land subsidence in peat areas

Land subsidence in peat areas Land subsidence in peat areas in the Netherlands damages housing and infrastructure In other countries where peat areas are located on the coast these areas are increasingly being submerged due to land subsidence with all the inevitable harmful consequences

Get price

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Rates and spatial variability of peat subsidence in Acacia

Mar 15 2019Studies of high-latitude peatlands have indicated that secondary subsidence rates also decrease over time due to a combination of i) unmaintained drainage ii) changing water retention characteristics leading to decreased aeration iii) rising mineral content of the residual peat as organic matter is lost and iv) accompanying increases in bulk density as a relatively high proportion of

Get price

Image

Rates and spatial variability of peat subsidence in Acacia

Mar 15 2019Studies of high-latitude peatlands have indicated that secondary subsidence rates also decrease over time due to a combination of i) unmaintained drainage ii) changing water retention characteristics leading to decreased aeration iii) rising mineral content of the residual peat as organic matter is lost and iv) accompanying increases in bulk density as a relatively high proportion of

Get price

Image

Peat Compaction as a Premier Driver of Mississippi Delta

Compaction is capable of accounting for a large portion of the exceptionally high rates of land surface subsidence relative sea-level rise and coastal wetland loss in the Mississippi Delta and it is likely a significant cause of subsidence in organic-rich low-lying coastal plains elsewhere

Get price

Image

Peat Compaction as a Premier Driver of Mississippi Delta

Compaction is capable of accounting for a large portion of the exceptionally high rates of land surface subsidence relative sea-level rise and coastal wetland loss in the Mississippi Delta and it is likely a significant cause of subsidence in organic-rich low-lying coastal plains elsewhere

Get price

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Coastal Subsidence along Eastern seaboard and Gulf of Mexico

land subsidence and sea-level rise) along parts of the coastal delta is ~8–9 mm/yr Most tide gauge stations have recorded sea-level-rise acceleration after A D 1970 The agreement between the subsidence rate obtained from a decade of GPS measurements and those estimated from multidecadal tide gauge records using the HHT method indicates

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The relative contribution of peat compaction and oxidation

Sep 15 2018Drainage of the peatland from ca 1100 CE initiated land subsidence due to peat compaction and oxidation In the course of time embankments had to be built to protect the subsided land from floods From ca 1400 CE wind-powered pumps (the Dutch wind mill) were used to keep these areas dry (Van de Ven 1993)

Get price

Image

DOSSIER Land subsidence in peat areas

Land subsidence in peat areas Land subsidence in peat areas in the Netherlands damages housing and infrastructure In other countries where peat areas are located on the coast these areas are increasingly being submerged due to land subsidence with all the inevitable harmful consequences

Get price

Image

Subsidence due to peat oxidation and impact on drainage

Evidence of land subsidence and impact on catchment infrastructures Actually the peat oxidation is precluded below the constructions which are usually founded on piles Another instructive although indirect evidence of the magnitude of the occurrence is provided by the Zennare pumping station (Fig 1

Get price

Image

Learning more about land subsidence in Kanis Kamerik and

May 17 2018Compaction in built-up areas oxidation in rural locations The study showed that subsidence occurs every time an additional load is placed on the peat soil or when the groundwater level is lowered 'The relative contributions of the compaction or oxidation of peat vary widely in space and time with compaction playing the largest role in built-up

Get price

Image

Peat subsidence

Oxidation of peat results in the loss of the greenhouse gas carbon dioxide (CO 2) to the atmosphere Drained peat is also a source of the greenhouse gas nitrous oxide (N 2 O) Peat subsidence may impact on soil processes and have an effect on nutrient cycling and loss therefore impacting on freshwater quality

Get price

Image

Cultivated peat soils lead to land subsidence and emit

Agricultural peatlands require repeated lowering of drainage as subsidence alters the effectiveness of the original drainage system with reduced bearing capacity and lower yields Ultimately long-term agricultural usage of peatland depends on the possibilities to redrain the peat and the quality of underlying substrates and its suitability for long-term agriculture

Get price

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xxMeasuring subsidence

• Peatland subsidence is part of a process of peat degradation due to drainage and fires causing GHG emissions • Depending on the water regime and the vegetation introduced subsidence can range from 2 to 5 cm yr-1 • A minimum subsidence of 2 cm yr-1 could cause CO 2 emissions of 27 Mg ha-1 yr-1

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Image

Peat subsidence

Oxidation of peat results in the loss of the greenhouse gas carbon dioxide (CO 2) to the atmosphere Drained peat is also a source of the greenhouse gas nitrous oxide (N 2 O) Peat subsidence may impact on soil processes and have an effect on nutrient cycling and loss therefore impacting on

Get price

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Changes in mineral element concentrations in peat soils

Changes in mineral element concentrations in peat soils drained for forestry in Finland This is possible because compaction of peat takes place after drainage and (e g Lieffers 1988 Freeman et al 1993) The subsidence of the mire surface brings new nutrient reserves from deeper peat layers back to where they can

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Image

DOSSIER Land subsidence in peat areas

Land subsidence in peat areas Land subsidence in peat areas in the Netherlands damages housing and infrastructure In other countries where peat areas are located on the coast these areas are increasingly being submerged due to land subsidence with all the inevitable harmful consequences

Get price

Image

Cultivated peat soils lead to land subsidence and emit

Agricultural peatlands require repeated lowering of drainage as subsidence alters the effectiveness of the original drainage system with reduced bearing capacity and lower yields Ultimately long-term agricultural usage of peatland depends on the possibilities to redrain the peat and the quality of underlying substrates and its suitability for long-term agriculture

Get price

Image

The relative contribution of peat compaction and oxidation

Sep 15 2018Drainage of the peatland from ca 1100 CE initiated land subsidence due to peat compaction and oxidation In the course of time embankments had to be built to protect the subsided land from floods From ca 1400 CE wind-powered pumps (the Dutch wind mill) were used to keep these areas dry (Van de Ven 1993)

Get price

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Sequence stratigraphy and

Trnqvist 2006) Recent study (e g Trnqvist et al 2008) categorically emphasized peat compaction as one of the single most dominant factors for high subsidence rate of organic-rich Holocene substrate of the Mississippi delta Therefore coal-precursor peat compaction study and channel amalgamation in

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Image

Cause and Effect

The compaction of susceptible aquifer systems caused by excessive groundwater pumping is the single largest cause of subsidence in California and the 5 200 mi 2 affected by subsidence in the San Joaquin Valley since the latter half of the 20th century has been identified as the single largest human alteration of the Earth's surface topography The second largest cause of subsidence in California is the oxidation

Get price

Image

The relative contribution of peat compaction and oxidation

Sep 15 2018Drainage of the peatland from ca 1100 CE initiated land subsidence due to peat compaction and oxidation In the course of time embankments had to be built to protect the subsided land from floods From ca 1400 CE wind-powered pumps (the Dutch wind mill) were used to keep these areas dry (Van de Ven 1993)

Get price

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Experiences in Peat Development for Oil Palm Planting in

Oil Palm Bulletin 58 Experiences in Peat Development for Oil Palm Planting in the MPOB Research Station at Sessang Sarawak Changes in peat characteristics such as peat depth degree of peat decomposition subsidence and bulk density were monitored and recorded over the period of 17 years after peat was drained

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Image

Subsidence due to peat oxidation and impact on drainage

Evidence of land subsidence and impact on catchment infrastructures Actually the peat oxidation is precluded below the constructions which are usually founded on piles Another instructive although indirect evidence of the magnitude of the occurrence is provided by the Zennare pumping station (Fig 1

Get price

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Subsidence due to peat compaction and oxidation in built

We assessed subsidence due to peat compaction or oxidation of up to 2 meters over the last 1000 years and subsidence rates of up to 16 cmyr-1 The amount and rate of subsidence due to peat compaction and oxidation and the relative contribution of both processes is however highly variable in time and space depending on the Holocene sequence composition loading conditions and groundwater-table

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