[Data Intake]: BTS Strata

[NMucci1]

Data owner / manager

Name: Catherine Foley
Title: Fish Biologist
Affiliation: NOAA Fisheries
Email: [email protected]

Project / program

Survey Mitigation

Data location

public facing GitHub repo. It is also on Oracle, but that version is not updated and has errors. Use GitHub version.

What is the type of data?

Shapefile

If Other, please specify data type

No response

Metadata

Program description: BTS team is working on a website right now. Use survey mitigation plan for background information. Can also use InPort page

Frequency of update: not getting updated regularly, there are internal versions that get updated (because not all stations get sampled on every survey). There is an ongoing project to restratify but will likely be a while before this happens.
-How does wind farm piece enter into the restratification effort? Trying not to exclude wind areas from strata explicitly, because the Bottom Trawl time series is longer than the life of the wind farm. They are dealing with avoiding wind farms through station identification rather than restratifying. In practice, they are stratifying out wind areas temporarily.

Where is metadata currently stored? InPort Bottom Trawl Surveys | InPort

Bottom Trawl GitHub Repo

Any data attributes that are non-spatial (e.g., stratum id)?

Yes

If Yes, please explain

strata_num, region, sector, sample_freq, area, depth, strata, n, earliest_t, latest_tow,

Spatial reference / coordinate system

Geographic Coordinate System NAD 1983
WKID 4269
Authority EPSG
Angular Unit Degree (0.0174532925199433)
Prime Meridian Greenwich (0.0)
Datum D North American 1983
Spheroid GRS 1980
Semimajor Axis 6378137.0
Semiminor Axis 6356752.314140356
Inverse Flattening 298.257222101

Geographic extent

Top 44.485580 deg
Bottom 34.355219 deg
Left -76.231171 deg
Right -65.569249 deg

Measurement system

No response

General description of project purpose and summary

-see the survey mitigation plan and InPort for the Bottom Trawl Survey summary

-there are 2 shapefiles- all strata and active strata. Use the active strata shapefile. The all strata file shows historic strata

Wind developer activity information

–so far it hasn’t been an issue because stations thus far haven’t been in active wind farm areas
-preplanning activities is hard because there isn't easy to obtain information on future construction, ex where cables and turbines will be
-having that info (planned turbine locations, boulders, cables) leading up to a survey season would be helpful for preplanning
-The bottom trawl team needs to know boulder relocation information. They often do 'stop and drops' in areas known to be sandy. If there are changes to the seafloor in those areas, they need to know.
-It's not viable to keep track of Notice to Mariners from Maine to North Carolina during a cruise
-PAM monitors- location of PAMs
-how often are PAMs updated
-other short term work between wind developers and research bodies would be helpful to know

-at what resolution would you need this information?
-more a general sense of when developers are operating in the area, doesn’t need to be super high resolution
-would be helpful to know when to have a scout if they are in an area with possible export cables, other construction
-all activities need to happen within 3 mile radius of their planned station, otherwise they need to change the station.

[NMucci1]

Sent email to Catherine on 2/11/25 to review strata on GeoPlatform