Changing Sea-levels
Drowned Channel of Portmagee
The changing sea-levels shows the detrimental effects clearly on the Portmagee Channel in Kerry.
Copyright Arnold Horner 2006.Drowned Channel of Portmagee
The changing sea-levels shows the detrimental effects clearly on the Portmagee Channel in Kerry.
Copyright Arnold Horner 2006.Antarctic Ocean
The evidence of changing sea-levels on the Antarctic Ocean.
Image courtesy of the Irish Independent.
Malin Head, Co. Donegal
Photo of Malin Head, Co. Donegal.
Courtesy of Corinna SchleifferMalin Head, Co. Donegal
Photo of Malin Head, Co. Donegal.
Courtesy of Corinna SchleifferAs a result some land areas were flooded
Other buried channels have been identified beyond the present mouths of the Rivers Suir and (Munster) Blackwater.
Raised beaches at Ballyhillin, near Malin Head.
At various times in the past, sea-level has been different to what it is to-day. Two types of former shoreline, or ‘raised beach’, are etched into the landscape at Ballyhillin, near Malin Head in County Donegal. The crescentic curve of the village in the middle of the photograph marks a shoreline that existed near the end of the Ice Age. At that time land along parts of the north coast was still recovering from the huge mass of ice that had rested on it. The land was depressed and had yet to readjust, with the result that the sea covered areas that later rose to become dry land. This shoreline is about 20 metres above present sea level. A second shoreline lies between the village and the sea, and is denoted by a line of low cliffs. This old shoreline lies about four metres above the present sea level and marks a period of world-wide high seas during a warm phase about five thousand years ago. [From work cited by Professor Frank Mitchell].
Image courtesy of Cambridge University air photo collection by J.K. St. Joseph.Raised beaches at Ballyhillin, near Malin Head.
At various times in the past, sea-level has been different to what it is to-day. Two types of former shoreline, or ‘raised beach’, are etched into the landscape at Ballyhillin, near Malin Head in County Donegal. The crescentic curve of the village in the middle of the photograph marks a shoreline that existed near the end of the Ice Age. At that time land along parts of the north coast was still recovering from the huge mass of ice that had rested on it. The land was depressed and had yet to readjust, with the result that the sea covered areas that later rose to become dry land. This shoreline is about 20 metres above present sea level. A second shoreline lies between the village and the sea, and is denoted by a line of low cliffs. This old shoreline lies about four metres above the present sea level and marks a period of world-wide high seas during a warm phase about five thousand years ago. [From work cited by Professor Frank Mitchell].
Image courtesy of Cambridge University air photo collection by J.K. St. Joseph.
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