Sinkholes


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Sinkholes

 

(Russian, zapadiny), flat depressions, most often of a round shape, found in the steppe and forest-steppe zones. The diameters of the sinkholes reach dozens and hundreds of meters, and their depth ranges from a fraction of a meter to several meters. They usually arise as a result of the subsidence of the soil from the leaching and washing away of underlying rocks.

References in periodicals archive ?
A family in Apopka in central Florida narrowly escaped a giant sinkhole that was caught on camera swallowing a huge portion of their house Tuesday morning.
The main objectives of this research were: 1) test the usefulness of GPR for characterizing sediment-filled sinkholes in the Castile Formation; 2) interpretation of subsurface hydrologically active karst features; 3) characterization of sinkhole origins as either solutional or collapse features; and 4) evaluation of the sedimentary fills in karst features.
Purely for academic discussion and not meaning to meddle into Senator Sotto's 'na-ano' sinkhole, I'd like to offer some guideposts (PR gurus call them 'strategies,' I simply call them 'pointers') on ways to deflect verbal missiles that one attracts for a stupid mistake or shortcoming.
A sinkhole that occurs in a yard but doesn't touch the house isn't included in regular insurance policies.
The worst incident happened in 1963 when 15-year-old Harry Van Dunk fell into a mine shaft through a sinkhole.
Police say they received a call about a sinkhole and were unable to find anything.
In fact, it may surprise you to hear that there are also plenty of sinkholes in Qatar too.
Giant Sinkholes Threaten to Swallow Two Tiny West Texas Towns," "Sinkholes May Take Texas Down").
It is the second sinkhole to open up in the city this month, after a 3ft deep hole opened up in Sefton Park on May 9.
Welsh Water said they are aware of a burst water main in the area but not of a sinkhole.
A Hertfordshire Fire and Rescue picture of the 20-metre sinkhole which opened up on a residential street |in St Albans, forcing the evacuation of families in the area
The sinkholes were first noticed in the 1970s, but have been forming more rapidly in recent years.