▁are ▁small ▁enough ▁( s and ▁size ▁or ▁smaller ), ▁wind s ▁shape ▁the ▁feature . ▁Where ▁wind ▁is ▁the ▁force ▁distrib uting ▁the ▁gra ins ▁in land , ▁the ▁depos it ▁behind ▁the ▁beach ▁becomes ▁a ▁d une . ▁ ▁These ▁ge omorphic ▁features ▁compose ▁what ▁is ▁called ▁the ▁beach ▁profile . ▁The ▁beach ▁profile ▁changes ▁season ally ▁due ▁to ▁the ▁change ▁in ▁wave ▁energy ▁experienced ▁during ▁summer ▁and ▁winter ▁months . ▁In ▁temper ate ▁areas ▁where ▁summer ▁is ▁character ised ▁by ▁cal mer ▁se as ▁and ▁longer ▁periods ▁between ▁breaking ▁wave ▁cr ests , ▁the ▁beach ▁profile ▁is ▁higher ▁in ▁summer . ▁ ▁The ▁gentle ▁wave ▁action ▁during ▁this ▁season ▁tends ▁to ▁transport ▁sed iment ▁up ▁the ▁beach ▁towards ▁the ▁b erm ▁where ▁it ▁is ▁depos ited ▁and ▁remains ▁while ▁the ▁water ▁re cedes . ▁ ▁On sh ore ▁wind s ▁carry ▁it ▁further ▁in land ▁forming ▁and ▁en han cing ▁d unes . ▁ ▁Con vers ely , ▁the ▁beach ▁profile ▁is ▁lower ▁in ▁the ▁storm ▁season ▁( w inter ▁in ▁temper ate ▁areas ) ▁due ▁to ▁the ▁increased ▁wave ▁energy , ▁and ▁the ▁shorter ▁periods ▁between ▁breaking ▁wave ▁cr ests . ▁High er ▁energy ▁waves ▁breaking ▁in ▁quick ▁succession ▁tend ▁to ▁mobil ise ▁sed iment ▁from ▁the ▁shall ows , ▁keeping ▁it ▁in ▁susp ension ▁where ▁it ▁is ▁pr one ▁to ▁be ▁carried ▁along ▁the ▁beach ▁by ▁long sh ore ▁curr ents , ▁or ▁carried ▁out ▁to ▁sea ▁to ▁form ▁long sh ore ▁bars , ▁especially ▁if ▁the ▁long