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)
- RT @AGU_Eos: CT scans of a sediment core to reveal two distinct pulses for Heinrich Event 1 [VIDEO] https://t.co/hepSy5p3RJ cc @EarthSciCam 12:42:10 PM April 28, 2017 from Twitter for iPhone ReplyRetweetFavorite
- RT @theAGU: “Our goal is to detect a tsunami’s size before it even forms...” https://t.co/ws5iNQr43l in #AGUblogs: https://t.co/0CHuVAHhto… 12:09:40 AM April 28, 2017 from Twitter for iPhone ReplyRetweetFavorite
- That's Shallotte River Estuary water after a rainstorm #shadowselfie https://t.co/1opTU1Xy1s 11:36:53 PM April 27, 2017 from Twitter for iPhone ReplyRetweetFavorite
Let’s share: Our first open-access article published.