sinkhole

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sinkhole

a depression in the ground in which water collects and disappears below the surface, e.g. in limestone areas where a cave roof has collapsed.

References in periodicals archive ?

A large "Tiankeng," a karst doline (Yangaotuo doline), can be found on the ground above the tunnel (Figures 3 and 4(a)).

Study of the Corrosion Characteristics of Tunnel Fissures in a Karst Area in Southwest China

Many researchers have followed a morphological approach, which mainly stressed morphological and morphometric criteria in delineating a tiankeng as a type of giant doline, and they distinguished collapse and erosional tiankengs as sub-types (Klimchouk 2005; Shui et al.

Research progress on karst tiankeng ecosystems

Lines with the omission of stress on the second S-position: V doline tishim glubokoi, model--0.159, verse--0.157.

Comparative study of verse: language probability models

Osobennosti morfologii stroeniya i formirovaniya prolyuviya krupnogo konusa vynosa v drevnej doline reki Gauya [Morphological characteristics and development of the old gully fan in the Gauja River valley].

Landslides and gully slope erosion on the banks of the Gauja River between the towns of Sigulda and Ligatne/Maalihked ja erosioonilised nolvaprotsessid Gauja joe orus Sigulda ning Ligatne linna vahelisel loigul

Three depth profiles to lithic contact 20 m apart came from a transect across a gentle side-slope leading to a doline, ~100 m from the entrance to the Predator Cave predator site.

Soil selenium in a forested seabird colony: distribution, sources, uptake by plants, and comparison with non-seabird sites

Of course, similar conditions have been described before: our findings are strongly reminiscent of those of the Laguna de la Cruz, a karstic doline, near Cuenca, in Spain (as described by Vicente & Miracle 1988).

Limnology in El Dorado: some surprising aspects of the regulation of phytoplankton productive capacity in a high-altitude Andean lake (Laguna de Guatavita, Colombia)

We recognized two water-plant communities according to water flow: the lotic community of Ranunculus pseudofluitans, restricted to the sand bed of La Yesera stream in the eastern part of the Station; and the lentic community of Ranunculus peltatus, found in some pools of doline origin.

Composicion vegetal de la Estacion Biologica de la UCM 'Finca de Ontalba'

Meyer, 1852) from lacustrine sediments of the Oberleichtersbach doline (Lower Franconia, Bavaria, Germany) are reported.

Nuevos ejemplares del Oligoceno superior de los sedimentos lacustres de la dolina Oberleichtersbach (Baja Franconia, Baviera, Alemania)

In the Passismanua area and part of the Lamogai Plateau, it forms a dissected karst plateau of massive coral-algal limestone with numerous dolines and saucer-shaped depressions resulting from doline collapse.

Diversity in lithic raw material sources on New Britain, Papua New Guinea

The doline collapse in anhydritic-gypsiferous soils and rocks is a typical case of sulphate-based mineral dissolution conducing to ground loss and instabilities of existing structures.

Sobre el comporatmiento del sistema Ca-S[O.sub.4]-[H.sub.2]O

A large karst terrain forms topographical characteristics in this region: there are 1124 cavities (called Doline) with level planar areas of 100-300 m diameter, surrounded by 3570 steep mountains with elevations of 600-1000 m above sea level and steep slopes of 30-40[degrees].

Evaluating nitrogen management of farm systems in the steep-mountainaous KARST region

Playwright and poet Lizzie Nunnery and novelist Gwen doline Riley will appear at the Everyman Bistro on Friday.