Current velocity data from a continuous survey using a towed ADCP in Sapelo Sound, Georgia, USA

Title:  Current velocity data from a continuous survey using a towed ADCP in Sapelo Sound, Georgia, USA

Author/Data Collector: Chunyan Li

Point of Contact, PI, Originator:  Chunyan Li ([e-mail])

Description:

These are velocity profile data from vessel towed ADCP obtained in the Sapelo Sound during a survey conducted on Sep. 16, 2000, for ~ 13 hours. The instrument was an RDI 600 KHz Workhorse ADCP.

The ADCP was mounted on a sled towed by the boat. The vertical bins were 0.5 m. The surveys were conducted at an average cruise speed of about 2.5–3 m/s except at the turns when the vessel had to slow down and during CTD casts when the vessel had to stop for a few minutes. A Seabird Electronic SBE 19 plus CTD was used. Note that only ADCP data are included in this dataset.

The data are averaged at about 20-second intervals, excluding bad data. The data presented here are in ASCII with the generic format provided by the RDI’s software WinRiver II output. The data file is:

SAPELO0T.000

Here is an example of the data –

    50     50     25     40      4      0      4

0 9 16 10 11 17 74     1     13    3.290   -2.490  108.000   28.290

270.90   216.00     0.00     0.70  -32768   -32768   -32768   -32768      4.04     4.17     4.19     3.97

70.92        20.47       -44.29       -55.38        70.91

   31.5040556   -81.3190833   301.50   208.30         53.3

-17.2         -16.3          -5.6           0.0           0.0           0.0           0.0    0.0    0.0

28 cm BT counts 0.43  0.034

  1.48     56.51    251.854  -53.7  -17.6   17.9   -2.2  157.0  170.0  164.0  166.0  100      -0.55

  1.98     50.49    243.536  -45.2  -22.5   14.4   -0.1  164.0  178.0  172.0  172.0  100      -0.28

  2.48     53.94    242.390  -47.8  -25.0   13.6    4.5  163.0  178.0  171.0  171.0  100      -0.28

  2.98     55.93    245.268  -50.8  -23.4   10.2    9.3  162.0  176.0  168.0  170.0  100      -0.32

  3.48     44.55    242.745  -39.6  -20.4    8.4    1.0  174.0  178.0  171.0  189.0  100 2147483647

  3.98      7.17     59.859    6.2    3.6    0.4   -0.8  203.0  220.0  210.0  213.0  100 2147483647

  4.48     42.56     53.696   34.3   25.2    4.0  -48.8  112.0  146.0  149.0  119.0   23 2147483647

  4.98     78.55    357.957   -2.8   78.5   -0.5  -24.9   85.0  103.0   94.0   97.0   92 2147483647

  5.48     90.74     36.756   54.3   72.7  -21.8   51.6   77.0   98.0   84.0   94.0   38 2147483647

  5.98    129.25     14.563   32.5  125.1  -34.4   36.1   74.0   96.0   82.0   93.0   15 2147483647

  6.48     59.84     92.011   59.8   -2.1   83.9 -276.1   74.0   94.0   79.0   93.0    8 2147483647

  6.98    111.03     42.701   75.3   81.6   58.8   61.3   79.0   90.0   76.0   94.0    8 2147483647

  7.48     94.48      7.847   12.9   93.6   -1.8   53.9   98.0   94.0   84.0  103.0   46 2147483647

  7.98     28.63     39.472   18.2   22.1   -8.4  -96.0   92.0   98.0   95.0  103.0   92 2147483647

  8.48     55.17     60.461   48.0   27.2   -6.7  -17.5   97.0  110.0  112.0  105.0  100 2147483647

  8.98     70.91     54.876   58.0   40.8   -7.2  -50.9   94.0  120.0  110.0  102.0   92 2147483647

  9.48     87.63     46.156   63.2   60.7   -4.7  -52.4   85.0  108.0   99.0   98.0   85 2147483647

  9.98    149.70     45.189  106.2  105.5   -7.8   -8.6   79.0   96.0   86.0   94.0   62 2147483647

 10.48    -32768     -32768 -32768 -32768 -32768 -32768   74.0   89.0   78.0   92.0    0 2147483647

The ADCP data were used in Li (2013).

Acknowledgements

The data were collected on R/V Bluefin funded by NSF-LTER.

References

Li, C. (2013). Subtidal Water Flux through a Multi-inlet System: Observations Before and During a Cold Front Event and Numerical Experiments, Journal of Geophysical Research: Oceans, Vol. 118, 1–16, doi:10.1029/2012JC008109, 2013.