pothole


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pothole,

in geology, cylindrical pit formed in the rocky channel of a turbulent stream. It is formed and enlarged by the abrading action of pebbles and cobbles that are carried by eddies, or circular water currents that move against the main current of a stream. Potholes are most commonly found at the bottoms of eddies in rivers and in plunge pools below cataracts; sometimes potholes in a rock outcrop indicate the former site of a rapid or cataract. Potholes are often found in formerly glaciated regions where whirling columns of glacial meltwater sank well-like holes, or moulins, through the ice. Notable potholes are found in Ausable Chasm, N.Y., and Shelburne Falls, Mass. Potholes also refer to holes formed in human-made materials found in roads that are effected by natural freeze-thaw cycles or moisture (see weatheringweathering,
collective term for the processes by which rock at or near the earth's surface is disintegrated and decomposed by the action of atmospheric agents, water, and living things. Some of these processes are mechanical, e.g.
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).

pothole

[′pät‚hōl]
(civil engineering)
A pot-shaped hole in a pavement surface.
(geology)
A shaftlike cave opening upward to the surface.
Any bowl-shaped, cylindrical, or circular hole formed by the grinding action of a stone in the rocky bed of a river or stream. Also known as churn hole; colk; eddy mill; evorsion hollow; kettle; pot.
A vertical, or nearly vertical shaft in limestone. Also known as aven; cenote.
A small depression with steep sides in a coastal marsh; contains water at or below low-tide level. Also known as rotten spot.
(hydrology)

pothole

1. Geography
a. a deep hole in limestone areas resulting from action by running water
b. a circular hole in the bed of a river produced by abrasion
2. a deep hole, esp one produced in a road surface by wear or weathering
References in periodicals archive ?
Learn the process and always make sure you pack a spare tire in your trunk, in case you blow a tire going over a pothole.
He explains: "If driven over slowly, it is unlikely that going over one or two potholes will cause too much damage to your motorhome, however over time all the small bumps will soon add up.
She said: "The intention is to undertake a patching programme rather than filling individual potholes.
Moore said for a claim to be considered, a pothole must be reported and not repaired within a reasonable amount of time.
He added: "We know that potholes, uneven road surfaces and exposed manhole covers are an even bigger threat to those on two wheels, and so we have asked our streetwatchers to flag up particular dangers for cyclists and motorbike riders.
The case against the local authority was taken by a woman whose vehicle struck a pothole resulting in two burst tyres that cost her EUR184 to replace.
A total of 33% of the 1,478 drivers questioned said potholes had caused them to brake heavily, while more than 30% had had to swerve into another lane.
Pothole is also turning up the heat on the competition with prices that are approximately 65% less than a traditional repair solution.
While the recent rains have impacted the condition of the streets, Operation Pothole will come back for one weekend this month and one weekend in May for a special targeting of the increased number of potholes resulting from the storms, Hansen said.
They are a particular menace at night on dark rural roads as often the driver is unaware of the pothole until the damage is done.
The AA yesterday called for fuel VAT to be used in the pothole repair effort.
When the ice melts, it leaves a void which eventually caves in, forming the pothole, which expands as more and more traffic passes over it.