The southwestern half of Onslow Beach, NC is starved of sand. Using a side-scan sonar, we imaged peat and organic-rich sediment at the seafloor just seaward from where the waves start to break. Offshore from that, Miocene rock is imaged at the seafloor. It is difficult, at least for us, to get a true sense of what the seafloor looks like from these geophysical data (scale, rock type, relief, etc.). To gain perspective, we decided to SCUBA dive and collect a video of the seafloor from the shoreline to about 300 m offshore. Visibility nearshore was very low because that organic-rich mud was eroding and being suspended in the water column. Once we reached about 200 m from shore, visibility improved and we could clearly see rock outcropping at the seafloor (Belgrade Formation). That rock is shown in the video below, taken at a depth of about 7 m (23 feet).
3431 Arendell St.
Morehead City, NC
Lesson plans for middle- and high-school teachers that focus on estuarine fish habitats can be found here.
Lab Musings (mostly)
- Balloons of Lava Bubble into the Ocean from Seafloor Blisters https://t.co/EnVPnXWLFW about 21 hours ago from Twitter Web Client ReplyRetweetFavorite
- Accounting for Accelerated East Coast Sea Level Rise https://t.co/gKKjGHl9Wy about 21 hours ago from Twitter Web Client ReplyRetweetFavorite
- Of course oyster reefs (hard) impede marsh (soft) erosion, but they also preserve carbon-rich seds @jtridge https://t.co/K1S1zT7G0w 07:09:57 PM June 02, 2017 from Twitter Web Client ReplyRetweetFavorite
Let’s share: Our first open-access article published.