Sta 4521 Output data format Column 1, salt water depth, meter (0.000) Column 2, water temperature (standard ITS-90), deg C (0.0000) Column 3, salinity, practical salinity units (PSU) (0.0000) Column 4, water density, sigma-t, kilograms per cubic meter (0.0000) Column 5, fluorescence, milligrams per cubic meter (0.0000) Column 6, turbidity, nephelometric turbidity units (NTU) (0.0000) Column 7, if data flagged, indicates error in data collection -0.039 17.1519 14.9390 10.1498 -0.0113 -0.0092 0.000e+00 -0.041 17.1532 14.9367 10.1478 -0.0113 -0.0088 0.000e+00 -0.041 17.1519 14.9367 10.1481 -0.0075 -0.0095 0.000e+00 -0.039 17.1517 14.9366 10.1481 -0.0090 -0.0084 0.000e+00 -0.038 17.1530 14.9252 10.1391 -0.0106 -0.0080 0.000e+00 -0.040 17.1509 14.9003 10.1206 -0.0098 -0.0092 0.000e+00 -0.043 17.1602 14.8955 10.1150 -0.0090 -0.0088 0.000e+00If visible in the sample above, the presence of the ">" character is for formatting the metadata only. That character does not actually occur in the data.
These data are collected to map the seasonal temperature, salinity, density, fluorescence (chlorophyll A), and turbidity configuration of the water column which affect the distribution and availability of plankton and the distribution of fish and invertebrate species.
SBE19plusV2, serial number 01906617 manufactured by Sea-Bird Electronics, Inc.
Firmware version: 2.2c Firmware date: 7 December 2009 Manufactured date: 29 July 2010 Software version: 2.3.0Internal sensors:
main temperature, serial number 01906617 main conductivity, serial number 01906617 main pressure, type, strain, serial number 3161799External sensors from WET Labs (CHL is Chlorophyll and TURB is turbidity):
ECO-FLNTURT CHL, serial number FLNTURT-1798; WET Labs fluorometer, ECO-AFL/FL ECO-FLNTURT TURB, serial number FLNTURT-1798; WET Labs turbidity meter, ECO-NTUConfiguration:
Instrument battery operated; not connected to a conducting cable Profile mode: sampling rate 4 per second, averaged to provide each data point CTD deployed on the USGS SEABed Observation and Sampling System (SEABOSS)Data archive:
All data; downcast, drift, and upcastThe temperature (degrees C) sensor has the following specifications:
measurement range -5 to +35 degrees C; initial accuracy +-0.005; resolution 0.0001;The conductivity Siemens per meter (S/m) has the following specifications:
measurement range 0 to 9 S/m; initial accuracy +- 0.0005; resolution varies: 0.00005 (most oceanic water; resolves 0.4 parts per million (ppm) in salinity) 0.00007 (high salinity water; resolves 0.4 ppm in salinity) 0.00001 (fresh water; resolves 0.1 ppm in salinity)
The strain gauge pressure:
measurement range 0 to full scale range: 20/100/350/600/1000/2000/3500/7000; initial accuracy +- 0.1% of full scale range; resolution 0.002% of full scale range.
The turbidity sensor:
wavelength 700 nm; sensitivity 0.01 NTU, rant 0-25 NTUThe fluorescence sensor:
Chlorophyll-a 470 nm EX/695 nm EM; sensitivity 0.2 micro-g/l; range 0-125 micro-g/l ChlPerson who carried out this activity:
Are there legal restrictions on access or use of the data?
Use_Constraints: Not to be used for navigation.
Although these data have been processed successfully on a computer system at the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. The USGS or the U.S. Government shall not be held liable for improper or incorrect use of the data described and/or contained herein. Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
|Data format:||The ZIP file contains the CTD cast data and the associated FGDC CSDGM metadata. in format TEXT Size: 1|
The ZIP file contains CTD data in text format. The user must have software capable of uncompressing the ZIP file and using the data files.