At Brenton Point in Newport, Rhode Island, waves play a significant role in the erosion of the coastline. As waves approach the shore, their energy is transferred to the land, especially during storms or high tides. The force of the waves can wear away at the cliffs and rocks along the coastline, gradually eroding them over time. Additionally, the constant pounding of the waves can cause abrasion, where sediment and debris carried by the waves scrape against the shoreline, further contributing to erosion. There is some noticeable signs of erosion along the coastline here at Brenton Point.
This process is particularly pronounced in areas where the coastline is made up of softer rock or sedimentary materials. Over time, erosion can reshape the coastline, leading to the formation of cliffs, sea caves, and other coastal features. At Brenton Point, this ongoing erosion is a natural process.
Rocks undergo erosion when immersed in water through various processes like hydraulic action and abrasion. Hydraulic action occurs as water forces itself into cracks and crevices within rocks, applying pressure that breaks them apart. Abrasion transpires when particles carried by water, like sand and pebbles, collide with the rock's surface, gradually wearing it down. Over time, these factors work together, sculpting the landscape and shaping the formation of rivers, canyons, and coastlines.
If you look closely enough, you can see signs of erosion along Brenton Point's coastline. Constant waves crashing along with moving water have done a number to the shoreline rocks along the edge of the state park. In particular, there is an "object" located on the jetty that is particularly eroded.
Logging Requirements
1. What signs of erosion do you see on coastline here? If you aren't sure where to look, there is an "object" on a jetty when standing near GZ that should clue you in on some erosion going on.
2. What preventative measures, if any, do you see implemented to try and curb the erosion? What, if anything, do you think could be done to prevent erosion here?
3. Do you feel like the erosion here is more closely linked with hydraulic action, abrasion, or something else? Support your answer with evidence from the Brenton Point coastline.
4. At your time of visit, would you consider the waves to be gentle or rough? How would rougher ways help speed up the erosion process here?
5. Please post a photo of you or a geocaching item at the beach as proof of visit.