hummock

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Related to hummocks: hummocky, hummocked ice

hummock

1. a hillock; knoll
2. a ridge or mound of ice in an ice field
3. Chiefly southern US a wooded area lying above the level of an adjacent marsh

Hummock

 

a pileup of fragments of ice floes on the ice cover of seas, rivers, and lakes. Hummocks are caused by the lateral pressure of ice fields on one another and on the shoreline and shoals, which results in fragmentation of the edges of the fields. Hummocks are most common in the East Siberian and Chukchi seas and in the open part of the Arctic Ocean, where their height sometimes exceeds 8–9 m (in coastal areas it may reach 15–20 m).

Among the forms of hummock development that are distinguished are ridges (in solid drifting ice), barriers (hummock ridges on the margin of the shore ice, occasionally resting on the bottom), standing floes (ropaks), and stamukhi (individual pile-ups on shoals). The degree of development of hummocks is measured on a five-point scale; 0 indicates a completely smooth ice sheet, and 5 means that the ice sheet is completely covered with hummocks.

hummock

[′həm·ək]
(ecology)
A rounded or conical knoll frequently formed of earth and covered with vegetation.
(geology)
A rounded or conical knoll, mound, hillock, or other small elevation, generally of equal dimensions and not ridgelike. Also known as hammock.
(hydrology)
A mound, hillock, or pile of broken floating ice, either fresh or weathered, that has been forced upward by pressure, as in an ice field or ice floe.
References in periodicals archive ?
Blazed just a few years ago, the Hummocks Trail takes hikers through what's left of the old summit of Mt.
Plants make low hummocks and look stunning when planted alongside heathers for winter impact
High up on the fifth tee, where the hummocks of Royal St George's stretched out before him, Clarke leaned back on a drinks fridge and lit up a cigarette.
Lawson, but it appeared most of the ducks were in the middle and that to get to them, I would have to creep through about 50 yards of boggy hummocks and willow.
5 m, n = 26), but placed their nests in dry situations on the sides or tops of small hummocks or ridges.
Commonly (at least in those days) finding a moose within a mile or so every day was a fairly easy task, but then came hard work for the terrain across the peninsula's broad vistas which, is deceptively benign at a distance, becomes a nightmarish quagmire of ankle twisting hummocks, boot sucking goo, knee deep water and near impenetrable thickets once you are on the ground.
The unbalanced, random distribution of weedy, ill-looking trees, ugly, common plants, concrete, tarmac, dead-end paths leading to blank walls, sinister hollows, unsightly brown hummocks, stretches of grey metal fencing only suitable for a poison gas research facility and scrubby dead grass emitted such a sense of malevolence that anybody entering the park immediately suffered acute feelings of anxiety, fear and depression.
This has hummocks and hollows that seems to indicate the sites of ancient settlements.
Grey and silver foliage plants work well to link diverse pastels, while small hummocks of blue-grey grass can be planted next to black ribbon grass Ophiopogon planiscapus `Nigrescens' for real impact.
Veer left over the hummocks to enter a cart tack and go out to the road.
And he still thrills to step past them into the grass hummocks where the birds are, waiting.
A few isolated hummocks support Sphagnum fimbriatum and S.