Lesson 3 Coastal Processes

• Coastal Zone: A broader geographical region where the world ocean interacts with land, including rocky shores, dense mangrove forests, and muddy saltmarshes.
• Tides: Very long-period waves that move through the ocean in response to the forces exerted by the moon and sun.
• Ocean waves: Generated by wind blowing over the ocean surface.
• Waves provide about half the energy to do work at the coast.
• NEAP: Period of moderate tides when the sun and moon are at right angles to each other during first and last quarter.
• SPRING: The 'springing forth' of the tide during new and full moon.
• Fernando P Siringan is the subject matter expert on pers comm.
• Natural signs of a tsunami include a felt earthquake, unusual sea level change, and rumbling sound of approaching waves.
• Sea level rise is an increase in the level of the world’s oceans due to the effects of global warming.
• Safety and preparedness measures for tsunamis include not staying in low-lying coastal areas after a felt earthquake, moving to higher grounds immediately, and never going down the beach to watch for a tsunami.
• The Philippine Coastal Management Guidebook Series No 1: Coastal Management Orientation and Overview was published in 2001 through the Coastal Resource Management Project of DENR and USAID.
• During the retreat of sea level, interesting sights are often revealed, tempting people to flock to the shoreline, thereby increasing the number of people at risk.
• Tsunami is a series of sea waves commonly generated by under-the-sea earthquakes or volcanic eruptions and whose heights could be greater than five meters.
• Consequences of sea level rise include increased intensity of storm surges, flooding, and damage to coastal areas.
• Storm surge is the abnormal rise in seawater level during a storm, measured as the height of the water above the normal predicted astronomical tide.