Entering Manual Station Information in SonTek RSSL

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Detailed Description

In this video we will outline the process of entering manual station information in the SonTek RSSL software. Note: Use of trade names is for descriptive purposes only, and does not imply endorsement by the USGS. For additional videos in this series, visit the following link: https://www2.usgs.gov/humancapital/ecd/hydrotube/hydrotube-ADCP.html
 

Details

Image Dimensions: 480 x 360

Date Taken:

Length: 00:02:08

Location Taken: Augusta, ME, US

Transcript

Hi my name is Nick Stasulis and I work with the Maine Office of the New England Water Science Center. In this video we will outline the process of entering manual station information in the SonTek RSSL software.

When collecting midsection data with an ADCP, whether it be in open water or under ice, you will likely run into several cases where you need to define a feature of the cross section. By entering manual station information, you can account for these cross section features. Also, it’s good practice to document why a manual entry is needed and how depth and velocity readings were determined for a manual vertical in the field notes.

Now, let’s discuss some of the common situations where these manual entries would be used. A bridge pier or island are both cases where using a manual entry is useful. The manual entries allow you to enter a location, depth and velocity to define something in the cross section. For the case of an island, you’d enter the location for the start of the island at the top of the dialog, and be sure to check the island edge box here. Then enter a user input water depth of zero and velocity correction factor of zero. After clicking the Ok button, you’ll notice another dialog will appear so you can enter the ending edge information for the island.

For a bridge pier, you’d also enter the start location at the top of the dialog and check the island edge option, but the user input depth would be based on a sounding or nearby station, and the velocity correction factor would be based on the previous or next station.

Another common situation is a location where there is water, but you are unable to measure it, commonly due to the ADCP not being able to measure due to a shallow depth or exceeding some other operating limit. In these cases, again determine a location for your manual vertical, and enter a user input depth based on soundings, surrounding stations, or intermittent ADCP data.

As you can see, the option to enter a manual station is a great way to document odd features of a cross section, or document a station where the ADCP is having issues obtaining a depth.