USGS/Cascades Volcano Observatory, Vancouver, Washington
Kick 'Em Jenny Volcano, West Indies
- Location Map
- Kick-'em-Jenny Submarine Volcano
Location of Kick-'em-Jenny
Kick-'em-Jenny Submarine Volcano
Smithsonian Institution - Global Volcanism Program Kick-'em-Jenny Website,
Kick 'Em Jenny Submarine Volcano, West Indies
Location: Lesser Antilles, West Indies
Latitude: 12.30 North
Longitude: 61.63 West
Height: -160 meters (-525 feet)
Kick-'em-Jenny, an actively growing
8 kilometers (5 miles) off the north shore of Grenada,
rises 1,300 meters (4,300 feet) from the sea
floor. Its summit has grown from 235 meters (770 feet) below
the sea surface in 1962 to 160 meters (525 feet)
twenty years later. Numerous historical
eruptions, mostly documented by acoustic signals,
have occurred since 1939, when an eruption cloud rose 275 meters (900 feet)
above the sea surface. Other known eruptions occurred in
1943, 1953, 1965, 1966, 1972, and 1974. The eruptions of 1939 and
1974 ejected eruption columns above the sea surface.
Seismic Research Unit Website, University of the West Indies,
St. Augustine, Trinidad, West Indies, 2001
Written histories of the West Indies do not mention Kick 'em Jenny volcano before 1939,
although there must certainly have been many eruptions
The name "Kick 'em Jenny" appears on many old maps when it usually refers either to
the small island now more commonly called Diamond Island
(or Ile Diamante) or to the whole passage between the Ile de Ronde and Grenada.
We have generally assumed that the name "Kick 'em Jenny" refers to the fact that the
waters in this region are sometimes extremely rough. ...
The first known eruption was on July 24 1939. It was witnessed by a large number of
people in northern Grenada. One of the spectators was the
well-known Grenadian historian Fr. R. P. Devas who wrote a two-page typescript account
of the eruption which is preserved in the Seismic Research Unit.
This eruption lasted for at least 24 hours and at its height it ejected an
eruption column 900 feet above sea level. This eruption generated a series of
sea waves or tsunamis which had amplitudes of about 2 meters in northern
Grenada and the southern Grenadines. We have discovered very
recently that these waves were sufficiently large to wash across the
west coast road in Barbados but were not recognized at the time as tsunami
Since 1939 there have been at least ten more eruptions.
None of these has been so big as the 1939 eruption and most have been detectable only by
seismographs. Kick 'em Jenny, like many other submarine volcanoes is a
particularly efficient generator of acoustic signals which are transmitted
through the ocean. These can be heard underwater (and on land close to the volcano)
as a deep rumbling noise but more importantly they are
recorded by seismograph stations. On several occasions they have been felt,
strongly in northern Grenada and the Grenadines and perceptibly as
far away as Martinique.
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12/12/01, Lyn Topinka