Current meter and SeaBird records from Fram Strait

The Deep Water Archive contains two groups of current meter and SBE records from Fram Strait. These were produced during experiments conducted by the Alfred Wegener Institute. (Click here to move up one level.)

The first group is from a line of moorings running from Svalbard on the east to Greenland on the west. Mooring F1 is the easternmost of these moorings and F16 lies at the western end of the string. Each of the links below takes you to a table that describes one mooring. From there you can download that mooring's data.

Determining a nominal depth for each of the instruments in the array listed above has been a challenge. For some instruments AWI has provided a time series of pressures and depths, and for other instruments just a single fixed depth. In cases where a single depth is provided we have used that depth here. Where a time series from a pressure sensor is available we have calculated a depth from the minimum pressure and used that minimum depth for the instrument's nominal depth. This makes sense because (a) the minimum depth is usually close to the instrument's intended depth, and (b) the single depth that AWI has provided for instruments without pressure sensors appears to be either an intended depth or a minimum depth. In cases where the minimum depth was within 5 meters of the ocean floor (or below it!) we chose a nominal depth 5 meters above the seafloor. We presume the depths shown here are approximately correct but cannot vouch for the depth order of nearby instruments on any given mooring.

A few of the moorings contained ADCPs. Data from the ADCPs has not been included here but may appear in the future.

A common feature of these moorings is salinity records that contain linear interpolations. Some of the interpolations are on the order of a day in length, and some are shorter; some records contain many interpolations and some contain only a few or none. We have tried to draw attention to these with comments but may have missed some (or many!). There are far too many interpolations for us to provide detailed notations of their locations in the records. They tend to appear at times when salinity dips to lower values for a few hours. We have no explanation for them.

Many of the current meters described in the links above by "Aanderaa RCM" were probably RCM7/8 models.

The second group of Fram Strait moorings was deployed in an "Arctic long-term observatory" called HAUSGARTEN, which also was operated by the Alfred Wegener Institute. (The caps seem to be part of its name). HAUSGARTEN was located near 79 deg North, 4 deg East and focused on vertical particle flux and primary production. We have acquired two sets of moorings from this location named FEVI and Lander. The links below will take you to them.

Instrument depths in the HAUSGARTEN moorings have been provided by AWI. Seafloor depths are from charts.

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