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griddap Subset tabledap Make A Graph wms files Title Summary FGDC ISO 19115 Info Background Info RSS Email Institution Dataset ID Trajectory - R4.x260.000.0073 - PelagiaEnv072816_all_2016 - 29.81N, 88.57W - 2016-07-27 In Situ Ichthyoplankton Imaging System (ISIIS) images were collected during two different summers (2011 and 2016) to determine the distribution of large scyphomedusae on the northern Gulf of Mexico shelf and their diel variability. Two different towing methods were used. In 2011 we towed the ISIIS at 3 fixed depths (10, 25, and 35 m) to measure the horizontal patchiness of jellies and associated zooplankton, and we also performed tow-yos in the same area. In 2016, we deployed the ISIIS in tow-yo fashion during the day and night in shallower waters (~25 m deep). We also examined the association of larval/juvenile fishes with these large scyphomedusae, examining the oceanographic variables related to these associations. Sizes and angles of orientation for each medusa were also measured. For 2011 data, physical data acquired at 2 Hz. For 2016 data, physical data acquired at 6 Hz. Images acquired at ~16 Hz\n\ncdm_data_type = Trajectory\nVARIABLES:\ntrajectory (PelagiaEnv072816_all_2016)\nobservations\ntime (seconds since 1970-01-01T00:00:00Z)\ntime_julian (nearest environment time CDT, seconds since 1970-01-01T00:00:00Z)\ntime_julian_seconds (Julian time [seconds], seconds since 1970-01-01T00:00:00Z)\nlatitude (degrees_north)\nlongitude (degrees_east)\nlabel (Dataset label name)\nslice (image number within an image stack of 430 images)\nxloc (x pixel location within the larger frame)\nyloc (y pixel location within the larger frame)\nwidth (width of bounding box in pixels)\nheight (height of bounding box in pixels)\ndepth (m)\nsea_water_temperature (Temperature, degree_Celsius)\nsea_water_salinity (Salinity)\ndissolved_oxygen (mg l-1)\ncorrected_dissolved_oxygen (corrected Oxygen, mg l-1)\n... (13 more variables)\n (external link) UNKNOWN R4_x260_000_0073_PelagiaEnv072816_all_2016

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