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Beach Blog
The latest news on all things along the 42 miles of beach in Orange County, Calif. ... Joanne on Beaches filled with ladybugs. paul ogier on "The Present" surf ...beach.freedomblogging.com/Beaches Blog - An honest take on beaches
TravelIndustry Blog. The Beaches of San Sebastian, Spain. No Comments ... Tags: Beaches, changing rooms, concha bay, entire city, historical architecture, ...beaches.uptake.com/blog/Pensacola Beach Blog
Pensacola Beach Blog. A Beach View. Home. Friday, April 24, 2009. Florida Oil Mystery ... beaches mean to the state's economy. ...pbrla.blogspot.com/Florida Beach Blog
Guide to the best beaches in Florida to eat, sleep, swim, and play.www.floridabeachblog.com/Sunset Beach Vacation Blog
Sunset Beach Area Happenings And Things To Do ... The Feeling of Sunset Beach ... We'll try to provide weekly updates to this blog. View my complete profile ...blog.sunsetbeachnc.com/
Beaches often occur along coastal areas, where wave or current action deposits and reworks sediments.
Although the seashore is most commonly associated with the word "beach", beaches are not only found by the sea or ocean: beaches also occur at the margin of the land along lakes and rivers where sediments are reworked or deposited.
The term 'beach' may refer to:
- small systems in which the rock material moves onshore, offshore, or alongshore by the forces of waves and currents; or
- geological units of considerable size.
The former are described in detail below; the larger geological units are discussed elsewhere under bars.
There are several conspicuous parts to a beach, all of which relate to the processes that form and shape it. The part mostly above water (depending upon tide), and more or less actively influenced by the waves at some point in the tide, is termed the beach berm. The berm is the deposit of material comprising the active shoreline. The berm has a crest (top) and a face — the latter being the slope leading down towards the water from the crest. At the very bottom of the face, there may be a trough, and further seaward one or more longshore bars: slightly raised, underwater embankments formed where the waves first start to break.
The sand deposit may extend well inland from the berm crest, where there may be evidence of one or more older crests (the storm beach) resulting from very large storm waves and beyond the influence of the normal waves. At some point the influence of the waves (even storm waves) on the material comprising the beach stops, and if the particles are small enough (sand size or smaller), winds shape the feature. Where wind is the force distributing the grains inland, the deposit behind the beach becomes a dune.
These geomorphic features compose what is called the beach profile. The beach profile changes seasonally due to the change in wave energy experienced during summer and winter months. The beach profile is higher during the summer due to the gentle wave action during this season. The lower energy waves deposit sediment on the beach berm and dune, adding to the beach profile. Conversely, the beach profile is lower in the winter due to the increased wave energy associated with storms. Higher energy waves erode sediment from the beach berm and dune, and deposit it off shore, forming longshore bars. The removal of sediment from the beach berm and dune decreases the beach profile.
