question: What exactly is it that makes the noise of waves on the shore?
comment: It's sound of millions of drops, bubbles and splashes of water hitting rocks, plus sound of billions rocks and sand particles colliding with each other as water moves them. Sound of waves hitting smooth concrete walls is noticeable quieter. And if water is still and just barely moves sand, you can hear faint noise of that sand moving, which is much closer to "gray noise", whilst usual waves hitting shores sound has much more distinctive ticks and hits and all that bubbling noise.
passages: Low rhythmic seiches are almost always present on larger lakes. They are usually unnoticeable among the common wave patterns, except during periods of unusual calm. Harbours, bays, and estuaries are often prone to small seiches with amplitudes of a few centimetres and periods of a few minutes.
  
  Among other lakes well known for their regular seiches is New Zealand's Lake Wakatipu, which varies its surface height at Queenstown by 20 centimetres in a 27-minute cycle. Seiches can also form in semi-enclosed seas; the North Sea often experiences a lengthwise seiche with a period of about 36 hours.
   A sound is often formed by the seas flooding a river valley. This produces a long inlet where the sloping valley hillsides descend to sea-level and continue beneath the water to form a sloping sea floor. The Marlborough Sounds in New Zealand are a good example of this type of formation.
   Seiche
  
  A seiche ( ) is a standing wave in an enclosed or partially enclosed body of water. Seiches and seiche-related phenomena have been observed on lakes, reservoirs, swimming pools, bays, harbours and seas. The key requirement for formation of a seiche is that the body of water be at least partially bounded, allowing the formation of the standing wave.
   These are formed from the action of fast flowing water over an uneven river or creek bed. The dynamics are very specific and not many naturally occurring surfable standing river waves are known, but examples include on the Zambesi river and near Munich, Germany.
   Multiples from the bottom of a body of water (the interface of the base of water and the rock or sediment beneath it) and the air-water interface are common in marine seismic data, and are suppressed by seismic processing.
  
  Section::::Outline of the method.:Sources of noise.:Cultural noise.
  
  Cultural noise includes noise from weather effects, planes, helicopters, electrical pylons, and ships (in the case of marine surveys), all of which can be detected by the receivers.
  
  Section::::Applications.
   Section::::Formation of the Drumheller Channels.
   In good old days, there was a village of fishermen called Kalachi. The main source of subsistence of the villagers was fishing; they used to row their boats deep into the sea to catch fish. In the locality (now known as Clifton) was a hazardous whirlpool called 'Kalachi jo Kun', meaning the 'Vortex of Kalachi'. Boats would get caught up and sunk deep in the vortex. Once a Whale took abode in the whirlpool and it devoured the crew of the boats, caught in the whirlpool.
   Wave-cut platform
  
  A wave-cut platform, shore platform, coastal bench, or wave-cut cliff is the narrow flat area often found at the base of a sea cliff or along the shoreline of a lake, bay, or sea that was created by erosion. Wave-cut platforms are often most obvious at low tide when they become visible as huge areas of flat rock. Sometimes the landward side of the platform is covered by sand, forming the beach, and then the platform can only be identified at low tides or when storms move the sand.
  
  Section::::Formation.
   Tide-generated internal solitary waves (solitons) can excite coastal seiches at the following locations: Magueyes Island in Puerto Rico,
  
  Puerto Princesa in Palawan Island,
  
  Trincomalee Bay in Sri Lanka,
  
  and in the Bay of Fundy in eastern Canada, where seiches cause some of the highest recorded tidal fluctuations in the world.
  
  A dynamical mechanism exists for the generation of coastal seiches by deep-sea internal waves. These waves can generate a sufficient current at the shelf break to excite coastal seiches.
  
  Section::::Occurrence.:Underwater (internal) waves.
   Section::::History.
  
  Following the First World War, when sonar was first used for the detection of submarines, echo sounders began to find uses outside the military. The French explorer Rallier du Baty reported unexpected midwater echoes, which he attributed to fish schools, in 1927. In 1929, the Japanese scientist Kimura reported disruptions in a continuous acoustic beam by sea bream swimming in an aquaculture pond.
   There are horse mussel ("Modiolus modiolus") beds both within Sullom Voe and on the mainland coast near Colla Firth. Ceteceans are regularly sited in the inner sound, especially harbour porpoise, minke whale and killer whale and there are a wide variety of breeding seabirds, divers and ducks including eider.
  
  Section::::See also.
  
  BULLET::::- Balta Sound
  
  BULLET::::- Bluemull Sound
  
  BULLET::::- Sounds of Scotland
  
  BULLET::::- List of Shetland islands
  
  Section::::References.
  
  BULLET::::- Nicolson, James R. (1972) "Shetland". Newton Abbott. David & Charles.
   BULLET::::- Low-crested rock sills are formed by the parallel arrangement and underwater placement of single rocks along shorelines and marshes. The rocks decrease erosion rates in these areas by dispelling oncoming wave energy. The placement of these sills are no greater than 6 to 12 inches over the mean high water mark and typically divided into sections to allow for the passing of boats, large waves and wildlife.
   A circular basin was added in 1990 to research the movement of sediment along beaches, among other research topics. It is also used to study ocean currents. The Circular Wave Basin can create waves up to in height in the deep structure that is in diameter.
   Near Bermuda, the sound channel axis occurs at a depth of around 1000 metres. In temperate waters, the axis is shallower, and at high latitudes (above about 60°N or below 60°S) it reaches the surface.
   In areas explored by the British in the late 18th Century, particularly the northwest coast of North America, the term "sound" was applied to inlets containing large islands, such as Howe Sound in Vancouver and Puget Sound in Washington State. It was also applied to bodies of open water not fully open to the ocean, such as Caamaño Sound or Queen Charlotte Sound in Canada, or broadenings or mergings at the openings of inlets, like Cross Sound in Alaska and Fitz Hugh Sound in British Columbia.
   It is common for an annual phenomenon called "Bissaaveli" to form at the Thūndu. The Bissaaveli forms when part of the sand of the beach moves away from the shore towards the edge of the reef, thus creating a lagoon, enclosed by sand and the shore of the island. This natural event attracts hundreds – possibly thousands – of locals who love to go to watch it. When it is well-formed, the "Bissaaveli" is enclosed from all sides, creating a natural shallow swimming pool where locals like to swim.
   They also sometimes form when an inland lagoon or lake breaches its entry to the sea, forming standing waves in the channel between the lagoon and sea. Examples include at Waimea in Hawaii.
  
  Section::::Types.:Artificial wave pools.
  
  These are waves generated in an artificially created pool with a powerful wave-generating device, to form waves which can be surfed without any need for an existing, natural water environment, such as an ocean or shoreline. Wave pools can therefore be built almost anywhere, and several designs and models (which have also been patented) are under construction throughout the world as of 2016.
   Section::::Industry.:Pine forestry.
  
  Since the 1970s, large areas of exotic (pine) forest have been planted around the sounds. Bulk timber is exported from a deep-water berth in Shakespeare Bay to the west of Picton.
  
  Section::::Māori.
   Lakes and reservoirs in the county include Lake Sonoma, Tolay Lake, Lake Ilsanjo, Santa Rosa Creek Reservoir, Lake Ralphine, and Fountaingrove Lake.
  
  Section::::Geography.:Marine protected areas of Sonoma County.
  
  Like underwater parks, these marine protected areas help conserve ocean wildlife and marine ecosystems.
  
  BULLET::::- Del Mar Landing State Marine Reserve
  
  BULLET::::- Stewarts Point State Marine Reserve & Stewarts Point State Marine Conservation Area
  
  BULLET::::- Salt Point State Marine Conservation Area
  
  BULLET::::- Gerstle Cove State Marine Reserve
  
  BULLET::::- Russian River State Marine Reserve and Russian River State Marine Conservation Area
   Section::::Use in entertainment and media.
  
  Section::::Use in entertainment and media.:In film.
  
  BULLET::::- The 1980 film "Hopscotch" with Walter Matthau and Glenda Jackson had a flying scene that included a mid-air explosion over the cliffs with the lighthouse in view below.
  
  BULLET::::- The 2010 remake of Graham Greene's "Brighton Rock" was filmed extensively on Beachy Head as well as in nearby Eastbourne, which was preferred to Brighton.
  
  BULLET::::- It made a short appearance in "Chitty Chitty Bang Bang", where Chitty fell off it and then flew for the first time.
   Section::::Hydrography.
   Section::::Importance.:Hatching.
   Section::::Sand dunes.
   These form where lagoons disconnected to the ocean are deliberately breached, which allows a narrow fast flowing channel to form which lowers the water level and re-connect the inland water system with the ocean. Sometimes surfable 'standing waves' are formed and surfed during these events, which can become a cultural attraction.
  
  Section::::Human influence.:Reef bombing.
   Section::::History.
  
  The earliest use of Oscillating Water Columns was in whistling buoys. These buoys used the air pressure generated in the collecting chamber to power a PTO system that consisted of a whistle or foghorn. Rather than generating electricity, the PTO would generate sound, allowing the buoy to warn boats of dangerous water. J. M. Courtney patented one of these whistling buoy designs. In 1885 Scientific American reported that 34 of the whistling buoys were operating of the coast of the USA.
  