2012-2013 Sub-ice Current Velocities Recorded with an Acoustic Doppler Current Profiler

Summary

Abstract: 

Between 26 November 2012 and 22 January 2013, a SonTek Argonaut-XR 1.5 MHz Acoustic Doppler Current Profiler (ADCP) was fixed at the bottom of the Limno Sampling Hole in Lake Hoare, looking downward through the water column. Every 30 seconds, the ADCP measured horizontal and vertical current velocities in six, 50-cm-thick cells between 0.5 and 3.5 m below the lake ice. The observation interval became deeper over time as the ADCP platform melted into the lake ice and the lake ice thinned. Data collected from 26 to 30 November represent pre-discharge data when wind and solar radiation were the only forces acting on the lake. Data from 30 November to 8 December transition from pre-discharge to spring freshet conditions on 6 December. Spring freshet was the most dynamic period observed with highest velocities recorded. Data from 8 to 13 December transitioned from the end of spring freshet on 10 December to summer diurnal discharge conditions. Data from the remaining datasets, 13 to 22 December, 22 to 29 December, 29 December to 6 January, 6 to 13 January, and 13 to 22 January, reflect conditions during summer diurnal stream discharge, especially data from 29 December to 6 January. From these observations, solar radiation, wind, glacial runoff during spring

Date Range: 

Sunday, January 1, 2012 to Tuesday, December 31, 2013

...or query the data clicking the:

Variables: 

DATASET_CODE
  • Label:
  • Definition: A code used to identify the entity table name and create lists of data holdings
  • Type: Nominal
  • Missing values: None specified
LOCATION NAME
  • Label:
  • Definition: Name of lake where measurement was made
  • Type: Nominal
  • Missing values: None specified
LOCATION CODE
  • Label:
  • Definition: Location in the lake where measurement was made
  • Type: Nominal
  • Missing values: None specified
DATE_TIME
  • Label: Attribute Label
  • Definition: Date on which sample was gathered
  • Type: Date/time
  • Date format: mm/dd/yy H:M:S
  • Missing values:
    • Required entry = None given
SAMPLE_ID
  • Label:
  • Definition: An internal identifier for the record
  • Type: Nominal
  • Missing values: None specified
MIN_DEPTH (m)
  • Label:
  • Definition: Minimum Depth value for the measurement range
  • Type: Physical quantity
  • Unit: meter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
MAX_DEPTH (m)
  • Label:
  • Definition: Maximum Depth value for the measurement range
  • Type: Physical quantity
  • Unit: meter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • Required entry = None given
Vx (cm/s)
  • Label:
  • Definition: the velocity component for the X-axis - East-West, where positive values mean fluid moving towards the west
  • Type: Physical quantity
  • Unit: centimetersPerSecond
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.5
  • Missing values:
    • Required entry = None given
Vy (cm/s)
  • Label:
  • Definition: the velocity component for the Y-axis - North-South, where positive values mean fluid moving towards the north
  • Type: Physical quantity
  • Unit: centimetersPerSecond
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.5
  • Missing values:
    • Required entry = None given
Vz (cm/s)
  • Label:
  • Definition: the velocity component for the Z-axis - Bottom-Up, where positive values mean fluid moving towards the bottom (down)
  • Type: Physical quantity
  • Unit: centimetersPerSecond
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.5
  • Missing values:
    • Required entry = None given
SPD_XY
  • Label: Speed_xy (cm/s)
  • Definition: the magnitude of the velocity (the speed) on the horizontal plane for the x-axis
  • Type: Physical quantity
  • Unit: centimetersPerSecond
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.5
  • Missing values:
    • Required entry = None given
Dir
  • Label:
  • Definition: THe orientation of the velocity vector on the horizontal plane
  • Type: Physical quantity
  • Unit: degree
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • Required entry = None given

DOI: 

10.6073/pasta/8d37c233ae7b4f39b8864c7310d87387

Short name: 

ADCP-ID.75

Data set ID: 

75
People

Owner/Creator: 

Contact: 

Additional Project roles: 

Data Manager