Longshore Sediment Movement

Longshore Sediment Movement (HMF19)

Location: Atlantic Highlands, NJ 07716 Monmouth County
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Country: United States of America
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N 40° 24.463', W 74° 0.263'

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Littoral Drift

— Coastal Habitats —

Most shore bathers soon realize the back-and-forth motion of the waves breaking on the shore not only stirs the sand but also persistently carries them down the beach. This unseen force is called a "longshore or littoral current." In general, the direction of this current along the East Coast is from north to south, although there are many variations.

When combined with the turbulence of breaking waves, the current can carry large amounts of sand for miles. The sand is redeposited either at the end of an island or within "inlets," where tidal currents move it in and out with each changing tide. Littoral drift carries an annual average of 200,000 to 300,000 cubic yards of sediment along the mid-Atlantic coast. Storms shift or strip away huge quantities of sediment, especially on steeply-sloped upper beaches. In the end, gravity transfers most beach material to the sea bed.

Atlantic waves are continuously reshaping the coastal habitats along this section of the Jersey Shore. The waves strike the beach in such a way that sand and other sediments are carried both north and south. The material swept northward adds to the spit known as Sandy Hook. Material carried southward has formed a series of barrier islands, beginning with Island Beach.
HM NumberHMF19
Placed ByNational Park Service, State of New Jersey
Marker ConditionNo reports yet
Date Added Monday, September 8th, 2014 at 2:49pm PDT -07:00
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Locationbig map
UTM (WGS84 Datum)18T E 584478 N 4473487
Decimal Degrees40.40771667, -74.00438333
Degrees and Decimal MinutesN 40° 24.463', W 74° 0.263'
Degrees, Minutes and Seconds40° 24' 27.78" N, 74° 0' 15.78" W
Driving DirectionsGoogle Maps
Area Code(s)732
Closest Postal AddressAt or near 151 Bayside Dr, Atlantic Highlands NJ 07716, US
Alternative Maps Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap

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