The Atlantic Deepwater Ecosystem Observatory Network for the U.S. Mid- and South Atlantic Outer Continental Shelf (OCS) was developed and deployed in November of 2017. This observatory network will generate long-term measurements of both the natural and human factors active in this region, thus informing the ecology and soundscape of the OCS.  These data will provide further a mechanistic understanding of the cumulative impacts these factors have on marine resources and provide insight for ecosystem-based management efforts.  Long-term observations of living marine resources and marine sound will assist Federal agencies, including BOEM, ONR, and NOAA, in complying with mandates in the Endangered Species Act (ESA), Marine Mammal Protection Act (MMPA), and Sustainable Fisheries Act (SFA).

Cruise Reports

Cruise Date
Cruise Name
Cruise Purpose
Cruise Reports

Nov 2017

AR 25

Fall 2017 was the first trip conducted to deploy ocean bottom-landers and collect ship-board data for ground-truthing, inter-calibration of lander data, and the examination of spatial and temporal patterns in ocean sound along with the distribution and abundance of biological organisms in the study region.
AR25 Cruise Report
June 2018 EN615
The objectives for this cruise were to recover bottom landers at seven sites along the shelfbreak (depths ranging from 200 – 900 m roughly), redeploy a bottom lander at each site after downloading its data, collect CTD profiles to characterize hydrographic conditions at the sites, conduct net sampling to collect biological specimens at each site, and conduct fine-scale (roughly 8 km by 8 km) multi-frequency acoustic surveys at each site. In addition, we collected animal specimens from net tows for collaborators associated with the DEEP SEARCH project as well as collecting water samples for eDNA analysis for DEEP SEARCH and other collaborators.
EN615 Cruise Report
Nov 2018 EN626
The objectives for this cruise were to recover bottom landers at seven sites along the shelf break (depths ranging from 200 – 900 m roughly), redeploy a bottom lander at each site after downloading its data, collect CTD profiles to characterize hydrographic conditions at the sites, conduct net sampling to collect biological specimens at each site, and conduct fine-scale (roughly 8 km by 8 km) multi-frequency acoustic surveys at each site. We were able to complete the lander turnarounds at all seven locations successfully, but poor weather for a large portion of the trip prevented us from completing all scheduled sampling at all sites. In addition, at several ADEON sites we collected animal specimens from net tows for collaborators associated with the DEEP SEARCH project as well as water samples for eDNA analysis for DEEP SEARCH and other collaborators. We were also able to conduct one net trawl at a DEEP SEARCH site Million Mounds.
EN626 Cruise Report

Bottom-Lander Deployments

 

 

The two visualizations shown below depict the R/V Armstrong travel path and activities as they occurred during the November 2017 ADEON network deployment cruise (reference 2017_AR25).

The video above depicts the path traveled during the deployment of the ADEON network. The video above depicts a data gathering transection path over the ADEON bottom-lander area named Virginia Inter-Canyon (VAC).