Sea level is a standard 'height' from which you can measure the relative height of objects (ie. cities) as such, high above sea level would refer to something 1,000+ metres above sea level... or whatever definition you think appropriate.
It is normally used in describing, or direction. It means the location is "high above the sea level"...
it means above sea level
Yes, mean sea level (MSL) is the average (mean) height of the sea.
1043 ft above sea level
Its 56 feet above sea level.
The sea is at a particular level compared to land. Most land is above sea level (or it would be under the sea or very far inland). If you are a mile above sea level, then you are a mile above where the sea would be if there was no land there.
The New Jersey coastline varies in elevation. On average, it is around 0 to 20 feet above sea level, with some areas reaching higher elevations due to natural features or development. The highest point along the coast is in the Sandy Hook area, which rises to about 146 feet above sea level.
MAMSL (Meter Above Mean Seal Level)
Elevation above mean sea level is 92feet (28 meters)
Florida's mean (average) elevation is 98 feet above sea level.
The average elevation is 246 feet above sea level.
Arizona has a higher lowest point at 70 feet above sea level, a higher high point at 12,633 feet above sea level and a higher mean elevation at 4,100 feet above sea level. The highest elevation in South Carolina is 3,560 feet above sea level and its mean elevation is 350 feet above sea level.
metres above the mean sea level
Above sea level.