Abstract:

This dataset contains ocean currents data from Shipboard Acoustic Doppler Current Profilers (SADCP) collected during the R/V Point Sur cruise PS1806 in the northern Gulf of Mexico from 2017-08-17 to 2017-09-04. The experimental site is on the continental slope of the northern Gulf of Mexico, next to the Deepwater Horizon Spill site. The raw ADCP data were collected and processed using the University of Hawaii data acquisition system (UHDAS) during the cruise. The post-cruise data processing were conducted by the University of Hawaii using the CODAS (Common Ocean Data Access System) processing. This dataset contains both raw and processed data. There were two vessel-mounted ADCPs on Point Sur operating at 75 kHz and 300 kHz respectively. Both were manufactured by RD Instruments.

Suggested Citation:

Kurt Polzin, Zhankun Wang, Steven F. DiMarco. 2020. Ocean currents measured by Shipboard Acoustic Doppler Current Profilers (SADCP) during the R/V Point Sur cruise PS18-06 in the northern Gulf of Mexico from 2017-08-17 to 2017-09-04. Distributed by: Gulf of Mexico Research Initiative Information and Data Cooperative (GRIIDC), Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/n7-yrq6-pk81

Purpose:

Data were collected in support of studies of GoMix project with the goal of understanding the mechanisms, spatial inhomogeneity and temporal intermittency of boundary mixing along the Northern Deepwater Gulf.

Data Parameters and Units:

Long files: Time[days], longitude[degrees], latitude[degrees], depth[m ], u[m s-1], v[m s-1], w[m s-1], error_velocity[m s-1], flag[], amp_sound_scat/signal strength[], percent_good[], percent_3_beam[], spectral_width[], ACCESS_first_good_bin[], ACCESS_last_good_bin[], ACCESS_U_ship_absolute[m s-1], ACCESS_V_ship_absolute[m s-1], NAV_latitude[degrees_north], NAV_longitude[degrees_east], NAV_speed[m s-1], NAV_direction[degrees], ANCIL1_tr_temp[Celsius], ANCIL1_snd_speed_used[m s-1], ANCIL1_best_snd_speed[m s-1], ANCIL1_mn_heading[degrees], ANCIL1_pings_sample[], ANCIL2_watrk_hd_misalign[degrees], ANCIL2_watrk_scale_factor[], ANCIL2_botrk_hd_misalign[degrees], ANCIL2_botrk_scale_factor[], ANCIL2_pitch_misalign[degrees], ANCIL2_roll_misalign[degrees], ANCIL2_last_temp[Celsius], ANCIL2_last_heading[degrees], ANCIL2_last_pitch[degrees], ANCIL2_last_roll[degrees], ANCIL2_mn_pitch[degrees], ANCIL2_mn_roll[degrees], ANCIL2_std_temp[Celsius], ANCIL2_std_heading[degrees], ANCIL2_std_pitch[degrees], ANCIL2_std_roll[degrees], ANCIL2_ocean_depth[m], ANCIL2_max_amp_bin[], ANCIL2_last_good_bin[], CONFIG1_avg_interval[sec], CONFIG1_compensation[], CONFIG1_num_bins[], CONFIG1_transducer_depth[m], CONFIG1_bin_length[m], CONFIG1_pls_length[m], CONFIG1_blank_length[m], CONFIG1_ping_interval[sec], CONFIG1_bot_track[], CONFIG1_pgs_ensemble[], CONFIG1_ens_threshold[], CONFIG1_ev_threshold[mm s-1], CONFIG1_hd_offset[degrees], CONFIG1_pitch_offset[degrees], CONFIG1_roll_offset[degrees], CONFIG1_freq_transmit[Hz], CONFIG1_top_ref_bin[], CONFIG1_bot_ref_bin[], CONFIG1_heading_bias[degrees], BT_u[m s-1], BT_v[m s-1], BT_depth[m]. Short files: time[days], longitude[degrees], latitude[degrees], depth[m], u[m s-1], v[m s-1], amp(signal strength)[], percent_good[], flag[], heading[degrees], transducer_temp[Celsius], num_pings[], uship[m s-1], vship[m s-1].

Instruments:

R. D. Instruments 75 kHz Vessel Mounted ADCP. R. D. Instruments 300 kHz Vessel Mounted ADCP.

Individual Files: