README FILE FOR BERING STRAIT MOORING DATA                      18th Feb 2024
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Bering Strait Moorings 2021-2022

This is an archive of data from moorings deployed in Bering Strait from
summer 2021 and to summer 2022.

Mooring deployments were funded by the NSF-Arctic Observing Network
award PLR-1758565 (PIs: Woodgate and Peralta-Ferriz).

The mooring work required 2 dedicated cruises:
- in 2021 (7th - 17th July), a ~ 11 day cruise on the US vessel
Norseman2 deployed the moorings.  Some CTD sections were run on this cruise,
and those data are archived separately.
- in 2022 (8th-19th September), a ~ 12 day cruise on the US vessel
Norseman2 recovered the moorings.  Some CTD sections were run on this cruise,
and those data are archived separately.

In 2021, a total of three moorings were deployed:
- two moorings (A2 and A4) in the US channel of the strait,
- one mooring (A3) at a site just north of the strait.
In what follows, mooring names include a two digit suffix to represent
year of deployment.
In 2022, moorings A3 and A4 were recoverd, but mooring A2 could not be
found despite an extensive acoustic search. 
In summer 2023, a multibeam search of the region was undertaken
using a portable Norbit system installed on the Norseman2, but unfortunately
no sign of the lost mooring was discovered, and we conclude the mooring
is irretrievably lost.    

Sites A2, and A3 were established in 1990. A2 and A3 have been occupied
almost continuously (all years except 96-97) since then. Site A4
was established in 2001.
Mooring location A2 is in the middle of the eastern (Alaskan side) channel.
Mooring location A3 is just north of the strait, immediately east of the
Russian-US EEZ (Exclusive Economic Zone) line.
Experience has shown that site A3 samples both eastern and western
channel water.
Mooring location A4 is close to the Alaskan coast and allows
measurement of the Alaskan Coastal Current.

For an overview of previous and on-going Bering Strait mooring work,
please see http://psc.apl.washington.edu/BeringStrait.html.

Moorings carry a variety of instruments, listed in the table below.
All records are year-round, sampling hourly or more frequently (Time
Int. in table below).
Data from instruments marked with * are not included in this archive.
For access to these data, please contact the named PI in list below table.

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--------------------------------------------------------------------------
ID  Deployed Latitude  Longitude  Instrument      S/N  Time   Inst.  Water
     in Year   (N)        (W)                          Int.   Depth Depth
--------------------------------------------------------------------------

A3-21  2021  66 19.64  168 57.00  Upper ISCAT    8964     NR    7m    58m
recovered by dragging             Lower ISCAT   20128  10min   16m    58m
at position  66 18.78  168 55.74  ISCAT-Logger     23  30min   ...    58m
likely moved 0903-1433 25 Jan2022 300kHz-ADCP    2332  30min   42m    58m
                                  SBE37         23132  60min   42m    58m
                                  SOUNDTRAP6079-1476694  -     49m    58m

A4-21  2021  65 44.74  168 15.77  ISCAT         22407     NR   14m    49m
                                  ISCAT-Logger     04  30min   ...    49m
                                  300kHz-ADCP    2232  30min   37m    49m
                                  SBE37         23154  60min   41m    49m

Mooring A2-21 was not recovered, but deployment information is included 
here incase the mooring is ever rediscovered in the future.
(depths are estimates from mooring design and past experience of the region)
A2-21  2021  65 46.85  168 34.09  *ISCAT         20937  10min   16m    56m
Not recovered, assumed lost       *ISCAT-Logger     26  30min   ...    56m
                                  *300kHz-ADCP   19413  30min   46m    56m
                                  *SBE37         23153  60min   50m    56m
--------------------------------------------------------------------------
Depths are estimated from mooring design and pressure sensors where available,
and are good to 1-2m.
  NR=instrument not recovered     ND=No data
Instruments with data included here:
 ISCAT - SBE37IM in ice resistant float, telemetering data inductively to
   a Logger below (system developed at APL-UW)
 300KHz-ADCP - 300kHz RDI/Teledyne Workhorse Acoustic Doppler Current Profiler
 SBE37 Microcat - Seabird SBE 37 Temperature Salinity Pressure recorder
 SBE16woptic - Seabird SBE16plus with optical data (including some or all of
               fluorescence, turbidity, transmissivity and PAR) - see headers
 SBE26p-BPG - Seabird SBE26plus Bottom Pressure Gauge
 RCM9Turb - Aanderaa RCM9 acoustic current meter with turbidity sensor
 RCM9LW   - Aanderaa Lightweight RCM9 acoustic current meter
Instruments with data not included here:
 AARI-CM&CTD - Current meter and CTD from AARI (Arctic and Antarctic Research
               Institute, Russia), PI: Igor Lavrenov, AARI
 ISUS - ISUS Nitrate sensor, PI: Terry Whitledge, UAF
 AURAL M2* - Aural Marine Mammal Acoustic Recorder, PI: Kate Stafford, UW
 APL Marine Rec* - APL Marine Recorder, PI: Kate Stafford, UW.
 Soundtrap - APL Marine Recorder, PI: Kate Stafford UW. 

Each data file contains the data from one instrument-year - the listed year
in the mooring name is the year in which the mooring was deployed.

For RCMs and SBEs, calibrated data are recorded in one file per instrument
per year, with naming convention:
   BeringStrait_yyyy_ID_III_#####.ttt
yyyy=Deployment year; ID=mooring ID; III=instrument type; #####=serial number;
ttt=indicates calibration, with .pre=pre-deployment calibration used,
.ppp=pre and post deployment calibrations merged.
The SBE-16 and 37 hexidecimal files (unaltered from the download) are also
included, indicated by extension .hex or .asc

For the ADCPs, there are multiple files per instrument.
   BeringStrait_yyyy__ID_#####ADCPraw.000 = Binary download from the ADCP
(see notes below for multiple .000 files)
   BeringStrait_yyyy__ID_#####_ADCPdeploytests.txt = pre deployment tests
   BeringStrait_yyyy__ID_#####_ADCPrecoverytest.txt = post deployment tests
The remainder are ASCII conversions of the data, corrected for clock drift
and magnetic declination.
   BeringStrait_yyyy__ID_#####.btm = ASCII bottom track data
        (including ice range and velocity)
   BeringStrait_yyyy__ID_#####.ins = ASCII instrument data
        (e.g. heading, pitch, roll, temperature)
   BeringStrait_yyyy__ID_#####_bin01.rdat = ASCII water velocity data in Bin 1
   BeringStrait_yyyy__ID_#####.bin02.rdat = ASCII water velocity data in Bin 2
    etc.  (Bin depths are given in the data files)
Header information is included in each data file.

-----------------------------------------------------------------------------
For details of the measurements and their interpretation, please see:
   Woodgate, R.A., K.M.Stafford and F.G.Prahl (2015) A synthesis of
   year-round interdisciplinary mooring measurements in the Bering
   Strait (1990-2014) and the RUSALCA years (2004-2011), Oceanography
   28(3):46-67, doi:10.5670/oceanog.2015.57
and
   Woodgate, R.A., 2018, Increases in the Pacific inflow to the Arctic 
   from 1990 to 2015, and insights into seasonal trends and driving 
   mechanisms from year-round Bering Strait mooring data, 
   Progress in Oceanography, 160, 124-154, doi:10.1016/j.pocean.2017.12.007.

Please use both 2015 and 2018 citations for these data.

For an overview of cruises and project, please see:
   http://psc.apl.washington.edu/BeringStrait.html

For relevant papers, please see:
Roach, A.T., K. Aagaard, C. H. Pease, S.A. Salo, T. Weingartner, V. Pavlov,
   and M. Kulakov (1995) Direct measurements of transport and water properties
   through Bering Strait, J. Geophys. Res., 100, 18,443-18,457.
Woodgate, R.A., and K. Aagaard (2005) Revising the Bering Strait freshwater
   flux into the Arctic Ocean, Geophys. Res. Lett., 32, L02602,
   doi:10.1029/2004GL021747.
Woodgate, R.A., K. Aagaard, and T. Weingartner (2005) Monthly temperature,
   salinity, and transport variability of the Bering Strait throughflow,
   Geophys. Res. Lett., 32, No. 4, L04601, doi:10.1029/2004GL021880.
Woodgate, R. A., K. Aagaard, and T. J. Weingartner (2005) A year in the
   physical oceanography of the Chukchi Sea: Moored measurements from autumn
   1990-1991,Deep-Sea Res., Part II, 52, 3116-3149,
   doi: 10.1016/j.dsr2.2005.10.016.
Woodgate, R. A., K. Aagaard, and T. J. Weingartner (2006) Interannual changes
   in the Bering Strait fluxes of volume, heat and freshwater between 1991
   and 2004, Geophys. Res. Lett., 33, L15609, doi:10.1029/2006GL026931.
Woodgate, R. A., T. Weingartner, and R. Lindsay (2010), The 2007 Bering
   Strait oceanic heat flux and anomalous Arctic sea-ice retreat,
   Geophys. Res. Lett., 37, L01602, doi:10.1029/2009GL041621.
Woodgate, R.A., T. Weingartner, and R. Lindsay (2012), Observed increases
   in Bering Strait oceanic fluxes from the Pacific to the Arctic from
   2001 to 2011 and their impacts on the Arctic Ocean water column,
   Geophys. Res. Lett., 39, L24603, doi:10.1029/2012GL054092.
Woodgate, R.A., (2018), Increases in the Pacific inflow to the Arctic from
   1990 to 2015, and insights into seasonal trends and driving mechanisms
   from year-round Bering Strait mooring data, Progress in Oceanography,
   160, 124-154,  doi:10.1016/j.pocean.2017.12.007.
Woodgate, R.A., and C.Peralta-Ferriz, (2021), Warming and Freshening of the
   Pacific Inflow to the Arctic from 1990-2019 implying dramatic shoaling
   in Pacific Winter Water ventilation of the Arctic water column,
   Geophysical Research Letters, doi:10.1029/2021GL092528


For queries, please contact:
   Rebecca Woodgate   woodgate@uw.edu   (206) 221-3268
   Polar Science Center, Applied Physics Lab, University of Washington
   1013 NE 40th, Seattle, WA  98105-6698   USA

------------------------------------------------------------------------------

Meta data
=========

1) Platform: Subsurface oceanographic moorings

2) Project title: Bering Strait

3) Data collection dates: July 2021 to Sept 2022

4) PI:   Rebecca Woodgate (woodgate@uw.edu)

5) Data collection method:
     Year-round moorings carrying
     - Sea-Bird temperature/conductivity and pressure recorders (SBE)
     - RDI 300kHz Workhorse Acoustic Doppler Current Profilers (ADCP)
     - APL data loggers for inductive data from ISCAT system

6) Data calibration method:
     Unless noted otherwise in the header on each data file, timestamps
     have been corrected for observed instrument clock drift.
     All times are given in GMT.
     For SBEs, calibration coefficients are given in header file.

  SBEs:
     - Generally pre and post calibrated by the manufacturer (indicated
       by suffix .ppp).  
     - pre and post calibrations linearly time-weighted through the
       deployment.
     - .pre suffix indicates only pre-cruise calibration used
     - just prior to recovery, a CTD cast was performed in the vicinity
       of the mooring as an attempt to provide and inwater calibration.
       This is found to be of inconsistent quality as a calibration check.
       Immediately after recovery, SBE instruments were placed in a stirred
       tank of sea water, to check immediate post deployment calibrations.
	 This gives the best estimate of any residual offset in salinity after
       the manufacturer's post calibration.
       For full details, see cruise report. These are both just informational checks
       to assess how well the post-cruise manufacturer's calibration captures
       the final in-water state. The final post-cruise calibration used is
       that from the manufacturer, to be consistent with prior data processing. 

  ADCPS:  Tested by APL/manufacturer pre deployment.
     - compasses calibrated as per manufacturer's
       specifications in Seattle prior to deployment.  Estimated
       compass error is included in the header file
     - where available, at sea compass check also included in header file
     - direction corrected to true north, magnetic declination used is cited
       in the header.
     - data requiring speed of sound in water is corrected by the ADCP using
       the water temperature measured by the ADCP.
     - intensity of returned signals is not specially calibrated.

7) Instrumentation used:  (see table for sampling frequencies)
     Sea-Bird SBE16 recorders
     ISCAT loggers (SBE37 Microcat logging data to an APL-Logger)
     RDI 300 kHz Workhorse ADCP - bin size typically 2m 

8) Quality control procedures:
     Quality control provided by Rebecca Woodgate.
     ADCP data rely on ADCP internal temperature for speed of sound
       corrections.
     ADCP Data files are included for all bins up to the surface although
       bins near the surface contain much larger errors (likely due to
       surface effects) and should be treated with caution.

9) Data format:
     SBE data - ASCII, format given in individual headers
        (uncalibrated "hex", "asc" or "XML" data also included for SBEs)
     ADCP data - 2 formats: a) BINARY download file from ADCP and
                            b) ASCII conversion of these files (in 2m bins)


10) Data collection problems:
    By Mooring:
      - After initial deployment 10th July 2021, on 11th July 2021, #
    mooring A3 was recovered (starting 17:06) and redeployed (completed 18:19) 
    to adjust Miscat weak link. Data records for this time window are thus
    contaminated and should be neglected.  After the one year deployment, 
    mooring A3 was discovered about 1nm SE of the original position, new 
    position approximately 66 18.78N 168 55.74W.  Data suggest it was dragged 
    to this point by sea ice on 25Jan2022 0903-1433.  A dragging operation
    was required to release mooring, likely due to biofouling of the release.      
      - biofouling is a typical issue in the strait, and was still
    sigificant on these moorings, although salinity cells were generally
    clear on recovery. The effect of this on the data is to make salinities appear
    erroreously fresh.  Estimates of the extent of this problem by
    instrument are given below and in the individual file headers.
    Photographic documentation of biofouling on recovery is available
    via cruise reports, included here and on the Bering Strait website:
    http://psc.apl.washington.edu/BeringStrait.html.


    By Instrument:

    === ISCATS (Loggers and SBE37s)

 A321  - Upper SBE37 8964 - lost after 15th Dec 2021
 - Logger 23 - Data only good to 15th Dec 2021
 - top float with SBE37 was lost, data only from logger      
 - logger clock 43 min slow on recovery but                  
   and time stamps here are taken from the SBE37,              
 - note start time is not on whole hour                      
 - note data are not regular in time                         
 - post cal not available, but other data show sensor        
   drift in the strait may be as large as 0.05-0.1psu too      
   fresh by end of year deployment.  
 ** Data times irregular, only uncorrected logger time given
   
 A321  - Lower SBE37 20128 - recovered
 - clock 0 min fast by end of deployment                     
 - note start time is not on whole hour                      
 - 3 records are missing at some unknown point, making       
   timestamp uncertainty of 30min.  However in and out of      
   water times match those recorded, suggesting lost records   
   are not near start or end of record.                        
 - record linearly interpolated between pre and pos cal (difference 0.03psu)       
 - testtank shows salinities 0.03psu fresh on recovery       
          
 A421  - Iscat SBE37 22407 - lost after 15th Feb 2022
 - Logger 04 - Data only good to 15th Feb 2022
 - top float with SBE37 was lost, data only from logger      
 - logger clock 21 min slow on recovery but                  
   and time stamps here are taken from the SBE37,              
 - note start time is not on whole hour                      
 - note data are not regular in time                         
 - post cal not available, but other data show sensor        
   drift in the strait may be as large as 0.05-0.1psu too      
   fresh by end of year deployment                             
 - recovered file contained many spurious characters,        
   requiring over 500 edits to align columns. Usually the      
   data were recoverable however where missing data were       
   interpolated between neighbouring points. Only 2            
   interpolations were over 2 timesteps, all others were       
   over one time step.                                         
 - note data are not regular in time.  Gaps of more          
  than an hour are not uncommon.  In Jan 2022, there is       
  a gap of more than 2 days.                                  
 ** Data times irregular, only uncorrected logger time given
   

    === SBE37s (non iscat)


A321_23132
 - Cell clear on recovery                                    
 - Clock 30s slow on recovery                                
 - record linearly interpolated between pre and pos cal      
 - testtank shows salinities 0.02psu fresh on recovery       

A421_23154
 - biofouling high, but cell seems mostly clea               
 - Clock 34s slow on recovery                                
 - SB37 memory was not entirely wiped before deployment      
   (1 record remained). Start time is adjusted to reflect this.
   Thus, record 1 time is thus wrong,                          
   but Record 2 onwards have the correct time.                 
 - record linearly interpolated between pre and pos cal      
 - testtank shows salinities 0.04psu fresh on recovery       


   === ADCPs
      Note that ADCP range measurements are not corrected
      for pitch and roll.  For full discussion and correction,
      see: Woodgate and Holroyd, 2011, included in archive.

A321_adcp02332
- pitch and roll generally < 10 deg, peaking at 20 deg                
- roll frequently 5-10deg                                             
- range measurements not corrected for pitch and roll                           
- large errors in bin1                                                          
- data generally good until Bin14 (~12m)                                       

A421_adcp02232
- pitch and roll generally < 10 deg, peaking at 20 deg                
- pitch and roll frequently 5-10deg, especially early in data         
- range measurements not corrected for pitch and roll                 
- bin1 large data errors                                              
- data generally good until Bin11 (~13m)                              


11) Other related data sets:
       This data set is a continuation of mooring measurements made in the
       Bering Strait almost continuously since 1990.  Mooring data have
       already been archived via the SBI project, managed by JOSS/EOS,
       and at NODC (now NCEI), and metadata at arcticdata.io and AOOS.
       For details see
        http://psc.apl.washington.edu/BeringStrait.html
        https://data.eol.ucar.edu/master_lists/generated/sbi/
        http://www.ncei.noaa.gov
       Since 2000, CTD sections have been run in the Bering Strait on
       the mooring cruises.  These data are also accessible via the http
       links above.

12) Conditions for use or citation:
       Data freely available
       Please, as a courtesy, contact the PIs before using these data and cite as
       Woodgate et al., 2015 and Woodgate, 2018, viz:
           Woodgate, R.A., K.M.Stafford and F.G.Prahl (2015) A synthesis of
             year-round interdisciplinary mooring measurements in the Bering
             Strait (1990-2014) and the RUSALCA years (2004-2011), Oceanography
             28(3):46-67, doi:10.5670/oceanog.2015.57
       and
           Woodgate, R.A., 2018, Increases in the Pacific inflow to the Arctic 
             from 1990 to 2015, and insights into seasonal trends and driving 
             mechanisms from year-round Bering Strait mooring data, 
             Progress in Oceanography, 160, 124-154, doi:10.1016/j.pocean.2017.12.007.

13) Data qualifications or warnings:
       See also Data collection problems.
       For data issues relevant to a specific deployment, see the
       individual headers.  In general:
       SBE data: Standard Sea-Bird limitations apply
            SBE37s:
            - estimated accuracy 0.002 deg C, 0.0003 S/m
              (corresponding to 0.008 psu), and < 1 db.
            SBE16s:
            - estimated accuracy 0.02 deg C, 0.0012 S/m
              (corresponding to 0.02 psu), and < 1 db.
	      FOR BOTH:
            - see header files for difference between pre and post calibration
              which are usually 0.03 psu or greater.
            - Note that post-calibrations on the SBE16s in the strait often
              suggest salinity sensor drift during deployment of between
              0.02 and 0.1psu, and this should be considered if post
              calibrations are not available
            - Note also that clogging of the salinity cell during
              deployment will not be captured by the post calibration
              and thus generally ends of records should be suspected
              for anomalously low salinities, especially if the SBE
              is not mounted vertical.
       ADCP data: Standard RDI limitations apply
            - estimated accuracy
              ~ 0.5 cm/s for water velocities (~100 pings per ensemble)
              Estimated errors (given in the files) vary with bin and time
              ~ 1 cm/s for ice velocities (2 or 5 pings per ensemble)
              Estimated errors (given in the files) vary with time
              ~ 1 deg in direction (see header files)
              Range to ice - accurate to 1% of range to surface (i.e. ~ 0.4 m)
              ~ 0.4 deg C in temperature
              Note that ADCP range measurements are not corrected
              for pitch and roll.  For full discussion and correction,
              see: Woodgate and Holroyd, 2011, included in archive.

14) Grant numbers:
      Mooring sponsorship came from
      - National Science Foundation (NSF) Arctic Observing Network (AON)
      program, grant PLR-1758565 (PI: Woodgate and Peralta-Ferriz)

15) Sample repository locations:
        National Centers for Environmental Information
          (http://www.ncei.noaa.gov)
          (previously National Ocean Data Center)
        University of Washington (http://psc.apl.washington.edu/HLD)

16) Please use the following 2 citations for these data:
   Woodgate, R.A., K.M.Stafford and F.G.Prahl (2015) A synthesis of
       year-round interdisciplinary mooring measurements in the Bering
       Strait (1990-2014) and the RUSALCA years (2004-2011), 
       Oceanography, 28(3):46-67, doi:10.5670/oceanog.2015.57
and
   Woodgate, R.A., 2018, Increases in the Pacific inflow to the Arctic 
       from 1990 to 2015, and insights into seasonal trends and driving 
       mechanisms from year-round Bering Strait mooring data, 
       Progress in Oceanography, 160, 124-154, 
       doi:10.1016/j.pocean.2017.12.007.

==============================================================================

==============================================================================

FILE LISTING
=============

Total number of files:  69 including 3 subdirectories

Size (b)   Name
---------  ----
= Metadata file (1 file)
    28501  Bering_Strait_Moorings_2021-2022_NSFAON_ReadMe_versFeb2024.txt

= Cruise reports (2 files) and 1 technical note (1 file)
  7073075  BeringStrait2021CruiseReport_Norseman2_24thMay2022withEventLog_small.pdf
  7197177  BeringStrait2022CruiseReport_Norseman2_versMay2023_smallwEL.pdf
  1853097  WoodgateandHolroyd2011_BTrangeCorrection.pdf

= ISCAT data  (4 files)
  - 2 ICLog*.pre of pre calibrated logger data
  - 1 ICsbe37*.ppp pre-post calibrated SBE37 data
  - 1 ICsbe37*.hex raw SBE37 data
  613153  BeringStrait_2021_A3_ICLog23U_08964.pre
 5954594  BeringStrait_2021_A3_ICsbe37L_20128.ppp
 2243472  BeringStrait_2021_A3_ICsbe37L_20128raw.hex
  732292  BeringStrait_2021_A4_ICLog04_22407.pre

= SBE37 (4 files)
  - 2 .hex files of raw data
  - 2 .ppp files of pre-post calibrated data
  (see also con file directory)
  998691  BeringStrait_2021_A3_sbe37_23132.ppp
  378064  BeringStrait_2021_A3_sbe37_23132raw.hex
  998325  BeringStrait_2021_A4_sbe37_23154.ppp
  378111  BeringStrait_2021_A4_sbe37_23154raw.hex

.. and the 3 subdirectories,

One subdirectory of SBE .con calibration files
./BeringStrait_2021_SBEconfiles:
   - 3 calibration files for SBE37s (2SM, 1IM)
 3174  SBE37IM_03720128_2022_09_15.xmlcon
 3181  SBE37SM-RS232_03723132_2022_09_15.xmlcon
 3181  SBE37SM-RS232_03723154_2022_09_15.xmlcon


Two subdirectories of ADCP data, naming conventions
as described above, (each 27 files)

./BeringStrait_2021_A3_adcp02332:
  4983655  BeringStrait_2021_A3_02332.btm
  2571049  BeringStrait_2021_A3_02332.ins
    46313  BeringStrait_2021_A3_02332ADCPdeploytests.txt
 14409960  BeringStrait_2021_A3_02332ADCPraw.000
    26929  BeringStrait_2021_A3_02332ADCPrecoverytests.txt
  3756195  BeringStrait_2021_A3_02332_bin01.rdat
  3756195  BeringStrait_2021_A3_02332_bin02.rdat
  3756195  BeringStrait_2021_A3_02332_bin03.rdat
  3756195  BeringStrait_2021_A3_02332_bin04.rdat
  3756195  BeringStrait_2021_A3_02332_bin05.rdat
  3756195  BeringStrait_2021_A3_02332_bin06.rdat
  3756195  BeringStrait_2021_A3_02332_bin07.rdat
  3756195  BeringStrait_2021_A3_02332_bin08.rdat
  3756195  BeringStrait_2021_A3_02332_bin09.rdat
  3756195  BeringStrait_2021_A3_02332_bin10.rdat
  3756195  BeringStrait_2021_A3_02332_bin11.rdat
  3756195  BeringStrait_2021_A3_02332_bin12.rdat
  3756195  BeringStrait_2021_A3_02332_bin13.rdat
  3756195  BeringStrait_2021_A3_02332_bin14.rdat
  3756195  BeringStrait_2021_A3_02332_bin15.rdat
  3756195  BeringStrait_2021_A3_02332_bin16.rdat
  3756195  BeringStrait_2021_A3_02332_bin17.rdat
  3756195  BeringStrait_2021_A3_02332_bin18.rdat
  3756195  BeringStrait_2021_A3_02332_bin19.rdat
  3756195  BeringStrait_2021_A3_02332_bin20.rdat
  3756195  BeringStrait_2021_A3_02332_bin21.rdat
  3756195  BeringStrait_2021_A3_02332_bin22.rdat

./BeringStrait_2021_A4_adcp02232:
  4943200  BeringStrait_2021_A4_02232.btm
  2550430  BeringStrait_2021_A4_02232.ins
    14424  BeringStrait_2021_A4_02232ADCPdeploytests.txt
 14173821  BeringStrait_2021_A4_02232ADCPraw.000
    27306  BeringStrait_2021_A4_02232ADCPrecoverytests.txt
  3725832  BeringStrait_2021_A4_02232_bin01.rdat
  3725832  BeringStrait_2021_A4_02232_bin02.rdat
  3725832  BeringStrait_2021_A4_02232_bin03.rdat
  3725832  BeringStrait_2021_A4_02232_bin04.rdat
  3725832  BeringStrait_2021_A4_02232_bin05.rdat
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