page_title: Blowout (geomorphology)
hierarchical_section_title: Blowout (geomorphology)
caption_attribution_description: English: Blowout located 6.5 km south of Earth, Texas.
context_page_description: Blowouts are sandy depressions in a sand dune ecosystem caused by the removal of sediments by wind.
  Commonly found in coastal settings and arid margins, blowouts tend to form when wind erodes into patches of bare sand on stabilized vegetative dunes. Generally, blowouts do not form on actively flowing dunes due to the fact that they need to be bound by some extent, such as plant roots. These depressions usually start on the higher parts of the stabilized dunes on the account that desiccation and disturbances are more considerable which allows for greater surface drag and sediment entrainment when sand is bare. Most of the time, exposures become quickly re-vegetative before they could become blowouts and expand; however, when the opportunities are given, wind erosion can lower the exposure surface and create a tunneling effect, which increases the wind speed. The depression may continue until it hits a non-erodible substrate or morphology limits it.
context_section_description: Blowouts are sandy depressions in a sand dune ecosystem (psammosere) caused by the removal of sediments by wind.
  Commonly found in coastal settings and arid margins, blowouts tend to form when wind erodes into patches of bare sand on stabilized vegetative dunes. Generally, blowouts do not form on actively flowing dunes due to the fact that they need to be bound by some extent, such as plant roots. These depressions usually start on the higher parts of the stabilized dunes on the account that desiccation and disturbances are more considerable which allows for greater surface drag and sediment entrainment when sand is bare. Most of the time, exposures become quickly re-vegetative before they could become blowouts and expand; however, when the opportunities are given, wind erosion can lower the exposure surface and create a tunneling effect, which increases the wind speed. The depression may continue until it hits a non-erodible substrate or morphology limits it. The eroded substances climbs the steep slopes of the depression and become deposited on the downwind side of the blowout which can form a dune that covers vegetation and lead to a larger area of depression; a process that helps create parabolic dunes.
caption: Blowout located 6.5 km south of Earth, Texas (1996)
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