Technical report of the Oceanographic Cruise Profrentes-00 in the Nayarit coast (january 20-21, 2016)
1.
Laboratorio de Oceanografía Biológica. Edificio CEMIC-01 Universidad Autónoma de Nayarit. Cd. de la Cultura S/N. Colonia Centro. Tepic, Nayarit. C.P. 63000. México.,
Universidad Autónoma de Nayarit,
Laboratorio de Oceanografía Biológica,
Universidad Autónoma de Nayarit,
Abstract
Hydrographic data from 8 CTD stations and 4 transects are reported. The oceanographic campaign PROFRENTES-00 took place from January 20th to 21st 2016 on board of the RV ‘Don Emilio M. González’ of the University of Nayarit, around the Santiago river plume in front of its mouth ‘Boca del Asadero’. This sampling was part of the project ‘Physical-biological processes in river plume fronts of the Mexican Pacific’ (Conacyt: I010/532/2014 MOD.ORD/42/2014 CB-2014-01 241916). Vertical profiles for each station are reported, physical variables measured were temperature, salinity, density anomaly, dissolved oxygen, fluorescence, and turbidity; as well as surface transects of continuous measurements of the same variables.
Received: 2017 October 16; Accepted: 2017 December 15
Keywords: Key words: Prospection, January 2016 hydrographic data, Santiago river plume and fronts, Nayarit’s continental shelf.
Introduction
The oceanographic campaing on board R/V Don Emilio M. González (property of Autonomous University of Nayarit) was conducted during January 20th and 21st 2016 nearby Santiago river plume zone in front of ‘Boca del Asadero’. As part of the project ‘Physical-biological processes in river plume fronts of the Mexican Pacific’ (Conacyt: I010/532/2014 MOD. ORD/42/2014 CB-2014-01 241916), it was named PROFRENTES-00.
The river plume fronts, hydrographic structures formed by continental freshwater systems run-offs’ to the sea, are key processes on coastal productivity, hydrological cycle, and thermodynamics stability of coastal seas (Martínez-Flores et al., 2011). The fronts between the plumes and adjacent waters in transition zones highly influence circulation, productivity, sediment dynamics, and water quality in coastal zones, despite the importance for several processes and biological communities, those are not completely understood (Largier, 1993).
The incomparable potential capacity to transport terrigenous sediments, nutrients and pollutants is under the influence of river flow, tides, and meteorological conditions. The river mouths near areas are usually highly productive, and these could sustain commercial fisheries (Pritchard, 2000). Such frontal zones concentrate high phytoplankton biomass (Franks, 1992) that could promote energy transfer to upper trophic levels (as zooplankton and minor pelagic fishes). On the other hand, the accumulation and availability of plankton in frontal zones has been widely documented, both due to in situ production and accumulation by convergence in the front (Brandt, 1993), suggesting that transport processes are very important.
Among other processes, fronts influencea < retention and recruitment of planktonic larvae of commercial interest organisms such as fish, mollusks (bivalves, cephalopods, and gastropods), and crustaceans (Largier, 1993). So, river plume fronts are very important for coastal productivity, including fisheries.
In the Gulf of California, on southern continental shelf in front of Sinaloa and Nayarit, the occurrence of these fronts has been documented through satellite images (Martínez-Flores et al., 2011), but also through foam accumulation, floating material, fish and bird activity, and the presence of the whale shark (Rhincodon typus) which indicates a high concentration of zooplankton biomass given their dietary needs (Murillo-Olmeda, 2010; Ketchum et al., 2012).
Project aim
The overall objective of the project is to describe the physical structure of the Santiago river plume, chlorophyll and nutrients concentration, large phytoplankton groups, zooplankton biomass, and fish larvae abundance and community structure. The hydrographic and biological data from this oceanographic campaign will be used in undergrad and grad thesis, as well as scientific publications.
The first objective of this campaign was prospection and recognition of physical and biological variables in the plume area of Santiago river. The second objective was to adjust sampling logistics and board work of scientific crew for subsequent cruises of the project ‘Physical-biological processes in river plume fronts of the Mexican Pacific’.
Report objective
The aim of this report is to present the study area of the project and the vertical structure of the Santigo’s river plume during January 2016, including temperature, salinity, density anomaly, dissolved oxygen, fluorescence and turbidity. As well as the geographic location of continuous measurements in surface transects of temperature, salinity, density anomaly, dissolved oxygen, fluorescence and turbidity.
In order to use the information in this report, a written permission from project responsible Dr. Emilio A. Inda-Díaz is required (eindad@uan.edu.mx).
Study area
The reported data were obtained in the area of Santiago’s river mouth in the Nayarit continental shelf region, from the coastline to approximately 25 km (Figure 1), between 21º42’00” N-20º30’00’’ N and 105º30’00’’ W-104º15’00’’ W. Table 1 summarizes the geographic location, depth, date and time of occupation of the hydrographic stations. Table 2 summarizes date, time, initial position, final position and length of continuous surface transects.
Geographic position of CTD stations of PROFRENTES-00 campaing. Station data are cast sequential number, name, position, local hour date and depth (m)
CAST | STATION | LATITUDE (ºN) | LONGITUDE (ºW) | HOUR (Local) | DATE (mm/dd/yyyy) | Station DEPTH (m) |
---|---|---|---|---|---|---|
230 | 1 | 21.6343 | -105.4572 | 11:39:30 | 01/20/2016 | 5.4 |
231 | 2 | 21.6338 | -105.4568 | 11:45:39 | 01/20/2016 | 5.4 |
232 | 3 | 21.6338 | -105.4568 | 11:51:00 | 01/20/2016 | 5.4 |
233 | 4 | 21.6337 | -105.4568 | 12:26:15 | 01/20/2016 | 5.4 |
235 | 5 | 21.5449 | -105.5549 | 14:27:05 | 01/20/2016 | 37 |
236 | 6 | 21.5437 | -105.5537 | 18:37:52 | 01/20/2016 | 39.24 |
238 | 7 | 21.5821 | -105.516 | 21:44:36 | 01/20/2016 | 17.28 |
240 | 8 | 21.6337 | -105.457 | 00:12:27 | 01/21/2016 | 5.9 |
Date, hour, starting position, final position of continuous surface transects
Cast | Transect | S t a r t i n g Latitude (ºn) | S t a r t i n g Longitude (ºw) | Final Latitude (ºn) | Final Longitude (ºw) | S t a r t i n g Hour (Local) | Final Hour (Local) | Date |
229 | 1 | 21.5417 | -105.3356 | 21.6347 | -105.4569 | 09:47:36 | 11:34:50 | 01/20/2016 |
234 | 2 | 21.6328 | -105.4583 | 21.5449 | -105.5549 | 13:13:43 | 14:21:50 | 01/20/2016 |
237 | 3 | 21.5462 | -105.5496 | 21.5821 | -105.516 | 21:18:59 | 21:44:36 | 01/20/2016 |
239 | 4 | 21.5856 | -105.5119 | 21.6337 | -105.4570 | 23:22:00 | 23:50:21 | 01/20/2016 |
Methods
Instruments and Calibration
This section describes the calibration and data acquisition of the SBE-911plus CTD (SCPlusV2_ RS232) manufactured by Sea Bird Electronics, Inc., serial number (01907465), which consists of a submari ne unit (SBE-911 plus). The SBE-911 unit consists of a pressure box (up to 6800 m deep capacity), containing power sources and electronics for data acquisition and telemetry, in addition to the pressure sensor. Outside there are modular sensors for temperature (SBE 3plus premium), pressure (Digiquartz® Pressure sensor), and conductivity (SBE 4C), which are fed by a constant spe ed pump controlled seawater flow (30 mls-1). The unit provides up to eight input channels to connect optional sensors; during PROFRENTES-00 campaign extra sen sors were used for dissolved oxygen (SBE 43), fluores cence (Fluorometer WET Labs WETstar), and turbidity (Turbidity Meter Seapoint).
CTD Calibration
The processes for pressure, temperature, conductivity and dissolved oxygen sensors calibration in laboratory have been described by Godínez et al., (1995). Table III presents coefficients of the manufacturer’s calibration for temperature (T), salinity (S), dissolved oxygen (DO), fluorescence (Fl) and turbidity (Tz) used sensors.
CTD Data Acquisition
The obtained data with temperature, salinity, dissolved oxygen, fluorescence and turbidity sensors were stored in the internal memory of the unit, both in the vertical profiles and transects. Additionally, in the surface transects, they were stored in real time in a computer on deck connected to a load data cable (Sea- Bird Wet-pluggable Load-Bearing data cable MCIL-4FS to DB-9S, 100 m). The technical specifications given by the manufacturer for each sensor are shown in Table 4.
Calibration coefficients of sensors. D depth (m), T temperature (ºT), C Conductivity (S/m), DO Dissolved oxygen (mL/L), Fl Fluorescence (μg/L), Tz Turbidity (NTU).
Coefficient | D | T | C | DO | Fl | Tz | ||
---|---|---|---|---|---|---|---|---|
Calibration Date | 01/17/2014 | 01/22/2014 | 01/22/2014 | 02/01/2014 | 08/01/2013 | 08/01/2013 | ||
Serial number | 01907465 | 01907465 | 01907465 | 2820 | WS3S-835P | 1955 | ||
Slope | 1.00000000 | 1.00000000 | 1.00000000 | |||||
Offset | 0.0000 | 0.0000 | 0.00000 | -0.4929 | ||||
a | 2.02902600e+000 | 1.23902368e- 003 | -9.98299700e-001 | -2.6753e-003 | ||||
b | -6.80672200e+001 | 2.76802378e- 004 | 1.43990000e-001 | 1.3612e-004 | ||||
c | 5.24449000e+005 | -1.31191594e- 006 | 2.78030100e-004 | -2.9724e-006 | ||||
d | 2.50907500e+001 | 1.89435487e- 007 | 4.06718800e-005 | 2.5826e+000 | ||||
Cpcor | - 9 . 5 7 0 0 0 0 0 0 e - 0081.00000000 | |||||||
CTcor | 3.2500e-006 | |||||||
Cell Const | 2000.000 | |||||||
WBOTC | 0.00000000e+000 | |||||||
Boc | 0.0000 | |||||||
Soc | 4.7119e-001 | |||||||
Pcor | 0.00e+000 | |||||||
Tcor | 0.0000 | |||||||
Tau | 1.0900 | |||||||
Scale Factor | 1.00000000e+001 | 20.000000 | ||||||
Vblank | 0.0540 | |||||||
Dark Voltage | 0.076000 |
CTD sensor specifications as given by the manufacturer (Sea Bird Electronics).
SENSOR | RANGE | PRECISION | RESOLUTION (24 Hz) | STABILITY | RESPONSE TIME | |
Pressure | 0-10,500 m | ± 0.015% of full scale | 0.001% of full scale | ± 0.02%or full year scale | 0.015 s | |
Temperature | -5-35ºC | ± 0.001 °C | 0.0002 °C | 0.0002 °C per month | 0.065 s | |
Conductivity | 0-7 S/m | ± 0.0003 S/m | 0.00004 S/m | 0.0003 S/m per month | 0.065 s | |
Fluorescence | 0.03-75 μg/L | 0.03 μg/I | 0.125 s | |||
Turbidity | 25-4000 NTU | 200-2 (mV/NTU) | 0.125 s |
Vertical profiles were measured by manually lowering the CTD at ~0.5 meters per second. For continuous surface transects, the CTD was placed in an ad hoc wooden box (1 m x 0.5 m x 0.5 m) of 250 L, which was fed with seawater pumped at 1 m depth (750 L/min), the residence time of seawater was 20 seconds, and navigation speed 6 knots.
Data processing
The 7.26.7 version of SBE Data Processing© (Sea-Bird Electronics) was used for data processing. This software consists of modules to convert, edit, process and graph oceanographic data obtained with the Sea-Bird 911plus CTD, and is part of the Seasoft V2 software suite 2017 (http://www.seabird.com/software/sbe-data-processing).
Data were downloaded and processed to obtain profiles of measured parameters (temperature, salinity, dissolved oxygen, fluorescence and turbidity) as well as density (derived). During the data processing the ‘noise’ was reduced, errors eliminated, and calculations were made to finally obtain values at every 0.1 m depth. All “raw” data recorded by the CTD during the cast were processed and converted to conventional units using DATCNV module. Due to the high vertical (profiles) and horizontal (transects) variation in coastal shallow data, the process suggested by the manufacturer (Sea-Bird Electronics, 2017a) was modified on an empirical basis and the WILDEDIT module was not used.
Due to differences in response time of each sensor, the first step for data processing was to advance measurements using the ALIGNCTD module in 0.05 s temperature and conductivity, 5 s dissolved oxygen, and 0.11 s fluorescence and turbidity. This delay is independent of that due to sensors’ conduit position (0.073 s; Sea-Bird INC, 1992), which was automatically adjusted when configuring the SBE-911plus control unit.
To eliminate depth inconsistencies due to boat pitching and manual descent/ascent of the CTD, the data were adjusted in the LOOPEDIT module. All data were maintained (from the surface). Data obtained with a CTD speed of less than 0.1 m were eliminated.
The next step was reduction of undesirable ‘noise’ (due to different sensor responses) through the FILTER module, using a single pole low-pass filter with a constant of 10 s for temperature, conductivity, fluorescence, dissolved oxygen and turbidity. This filtering is based on the criterion of visually minimizing peak salinity profiles (Morrison et al., 1994). Finally, data were averaged in centered 0.1 m blocks using the BINA VG module.
The reported temperature used to derive variables is ITS-90, the salinity is UPS, density is calculated from the seawater state equation according to the UNESCO proposal (1991) and density anomaly is reported γθ (kg•m3). The used algorithm to calculate dissolved oxygen concentration uses the Owens and Millard equation (1985). All these algorithms are performed internally by software provided by (Sea-Bird Electronics, 2017b; http://www.seabird.com/software/sbe-data-processing).
To locate errors that have not been eliminated using the procedures described above, a visual inspection was carried out after the data had been processed. Most of the errors are due to communication failure between the CTD and computer, sometimes they could be due to lack of time to sensors’ stabilization at surface, however, for this campaign a special care has been taken to stabilize sensors due to the high vertical and horizontal variation in the physical properties measured in river plumes. These errors are eliminated by editing the original files, reviewing the process, and if necessary is repeated completely.
Resultados
The processed data of CTD cast are presented in Annex 7.1, general data, tabulated physical variables data and vertical profiles. The surface continuous transects are presented in Annex 7.2, in addition to the general and tabulated data, a time series for measured physical variables averaged each second is presented. The symbols used in the profiles are described in Table 5.
Used abbreviations in CTD vertical profiles headers.
VERTICAL PROFILES | TRANSECTS | ||
VARIABLE | ABBREVIATION | VARIABLE | ABBREVIATION |
Station | St | Transect | Tr |
Cast | Ct | Cast | Ct |
Latitude (ºN) | Lat | Starting Latitude (ºN) | Lat_St |
Longitude (ºW) | Lon | Starting Longitude (ºW) | Lon_St |
Date (mm-dd-yyyy) | Date | Final Latitude (ºN) | Lat_Fn |
Hour (hr:mm:ss) | Hr | Final Longitude (ºW) | Lon_Fn |
Station Depth (m) | St_z | Date (mm-dd-aaaa) | Date |
Depth (m) | z | Hour (hr:mm:ss) | Hr |
Potential temperature (ºC) | Temp | Time (s) | Sec |
Salinity | Sal | Potential temperature (ºC) | Temp |
Density anomaly (kg/m3) | Dens | Salinity | Sal |
Dissolved oxygen (mL/L) | DO | Density anomaly (kg/m3) | Dens |
Fluorescence (μg/L) | Fl | Dissolved oxygen (mL/L) | DO |
Turbidity (NTU) | Tz | Fluorescence (μg/L) | Fl |
Turbidity (NTU) | Tz |
In addition, below there is a T-S diagram with data of all vertical sets from PROFRENTES-00 oceanographic campaign in front of the Boca del Asadero, in the plume area of the river.
[Figure ID: f2]
T-S diagram from all CTD cast of the PROFRENTES-00 campaign. Colors are depth (m).
fn1Cite this paper/Como citar este artículo: Inda-Díaz E. A., Romero-Bañuelos C. A., Cepeda-Morales J., Hernández Almeida O. U., Largier J. Bernal-Jaspeado T. S. (2018). Technical report of the Oceanographic Cruise Profrentes-00 in the Nayarit coast (january 20-21, 2016). Revista Bio Ciencias 5, e376. doi: https://doi.org/10.15741/revbio.05.e376
This work is part of the project 'Procesos físico-biológicos en frentes de pluma de río del Pacífico Mexicano' (Conacyt: I010/532/2014 MOD.ORD/42/2014 CB-2014-01 241916) . It also gives special recognition to the students of the Biological Oceanography Laboratory and Environmental Toxicology Laboratory of the Autonomous University of Nayarit. We thank all the people who helped with any interest to carry out this campaign. Special thanks to Eng. Fidencio Serrano Estrada "Otates," captain of B/O "Don Emilio M. González," and to the students of the National School of Fishing Engineering, who worked as part of the crew. To the National School of Fishing Engineering of the Autonomous University of Nayarit, and in general to all the instances and institutions that made the successful realization of this campaign.
St | 01 | Ct | 230 | Lat | 21.6343 | Lon | -105.4572 | ||
---|---|---|---|---|---|---|---|---|---|
Date | 01/20/2016 | Hr | 11:39:30 | St_z | 5.4 | ||||
z | Temp | Sal | Dens | DO | pH | Fl | Tz | ||
0.10 | 23.3662 | 9.5383 | 4.6248 | 5.4093 | 9.381 | 0.8331 | 2.3506 | ||
0.20 | 23.7012 | 14.7111 | 8.4326 | 5.11 | 9.379 | 1.3165 | 3.576 | ||
0.30 | 23.7973 | 16.3008 | 9.6026 | 5.0132 | 9.379 | 1.4741 | 3.9777 | ||
0.40 | 23.8554 | 17.2966 | 10.3357 | 4.9465 | 9.378 | 1.5902 | 4.2737 | ||
0.50 | 23.9088 | 18.2338 | 11.0259 | 4.8803 | 9.377 | 1.7152 | 4.5918 |
St | 02 | Ct | 230 | Lat | 21.6338 | Lon | -105.4568 | ||
---|---|---|---|---|---|---|---|---|---|
Date | 01/20/2016 | Hr | 11:45:39 | St_z | 5.4 | ||||
z | Temp | Sal | Dens | DO | pH | Fl | Tz | ||
0.10 | 23.9615 | 4.9842 | 1.0544 | 5.4125 | 9.368 | 0.9699 | 2.5444 | ||
0.20 | 23.0803 | 11.3662 | 5.8222 | 4.8179 | 9.375 | 2.2099 | 5.093 | ||
0.30 | 23.1389 | 13.3627 | 7.3076 | 4.6218 | 9.377 | 2.4483 | 5.346 | ||
0.40 | 23.1942 | 15.426 | 8.8432 | 4.4019 | 9.378 | 2.662 | 5.5557 | ||
0.50 | 23.4036 | 24.0998 | 15.3079 | 3.5979 | 9.393 | 3.3508 | 6.1425 |
St | 02 | Ct | 232 | Lat | 21.6338 | Lon | -105.4568 | ||
---|---|---|---|---|---|---|---|---|---|
Date | 01/20/2016 | Hr | 11:51:00 | St_z | 5.4 | ||||
z | Temp | Sal | Dens | DO | pH | Fl | Tz | ||
0.10 | 23.733 | 8.2293 | 3.5544 | 5.3933 | 9.419 | 0.9483 | 4.1635 | ||
0.20 | 24.0083 | 16.1846 | 9.469 | 4.8515 | 9.426 | 2.0334 | 5.3248 | ||
0.30 | 24.1309 | 20.9805 | 13.0433 | 4.4259 | 9.43 | 2.7257 | 4.6062 | ||
0.40 | 24.1577 | 22.5084 | 14.1853 | 4.2753 | 9.432 | 2.8802 | 4.4603 | ||
0.50 | 24.4154 | 32.0477 | 21.2892 | 3.774 | 9.474 | 3.8835 | 3.9335 |
St | 04 | Ct | 233 | Lat | 21.6337 | Lon | -105.4568 | ||
---|---|---|---|---|---|---|---|---|---|
Date | 01/20/2016 | Hr | 11:51:00 | St_z | 5.4 | ||||
z | Temp | Sal | Dens | DO | pH | Fl | Tz | ||
0.10 | 23.8645 | 6.4743 | 2.197 | 5.376 | 9.455 | 4.0204 | 12.3835 | ||
0.20 | 24.0478 | 14.2888 | 8.0288 | 4.7355 | 9.465 | 4.8049 | 15.6946 | ||
0.30 | 24.0814 | 15.3018 | 8.7815 | 4.6476 | 9.466 | 4.6475 | 14.8887 | ||
0.40 | 24.1441 | 17.2884 | 10.2582 | 4.4699 | 9.466 | 4.3718 | 13.4586 | ||
0.50 | 24.3632 | 24.1354 | 15.3469 | 3.8566 | 9.471 | 3.5953 | 9.1316 |
St | 05 | Ct | 233 | Lat | 21.5449 | Lon | -105.5549 | ||
---|---|---|---|---|---|---|---|---|---|
Date | 01/20/2016 | Hr | 14:27:05 | St_z | 37 | ||||
z | Temp | Sal | Dens | DO | pH | Fl | Tz | ||
0.10 | 24.3137 | 6.412 | 2.0353 | 5.3699 | 9.534 | 5.3596 | 7.3831 | ||
0.20 | 24.6979 | 11.0042 | 5.3881 | 5.0557 | 9.542 | 8.2241 | 10.625 | ||
0.30 | 24.7981 | 12.1348 | 6.2101 | 4.969 | 9.543 | 7.8907 | 9.9024 | ||
0.40 | 24.8911 | 13.336 | 7.0865 | 4.8776 | 9.544 | 7.3074 | 9.2809 | ||
0.50 | 24.0958 | 17.2262 | 9.9497 | 3.586 | 9.546 | 6.1433 | 8.2237 |
St | 06 | Ct | 236 | Lat | 21.5437 | Lon | -105.5537 | ||
---|---|---|---|---|---|---|---|---|---|
Date | 01/20/2016 | Hr | 18:37:52 | St_z | 39.24 | ||||
z | Temp | Sal | Dens | DO | pH | Fl | Tz | ||
0.10 | 24.8405 | 14.1023 | 7.6738 | 5.0605 | 9.371 | 0.1911 | 0.4118 | ||
0.20 | 25.003 | 17.6818 | 10.3188 | 4.8678 | 9.38 | 0.2452 | 0.461 | ||
0.30 | 25.0469 | 18.6741 | 11.0514 | 4.8091 | 9.383 | 0.262 | 0.4768 | ||
0.40 | 25.08 | 19.4228 | 11.6041 | 4.7621 | 9.384 | 0.2762 | 0.4903 | ||
0.50 | 25.1187 | 20.3053 | 12.2555 | 4.7036 | 9.387 | 0.295 | 0.5057 |
St | 07 | Ct | 238 | Lat | 21.5821 | Lon | -105.516 | ||
---|---|---|---|---|---|---|---|---|---|
Date | 01/20/2016 | Hr | 18:37:52 | St_z | 17 | ||||
z | Temp | Sal | Dens | DO | pH | Fl | Tz | ||
0.10 | 24.8405 | 12.2567 | 6.2888 | 5.3852 | 9.454 | 0.3818 | 0.7059 | ||
0.20 | 24.003 | 17.4796 | 10.2116 | 5.2601 | 9.458 | 0.5642 | 0.9342 | ||
0.30 | 24.0469 | 19.0148 | 11.3645 | 5.2203 | 9.458 | 0.6246 | 1.0089 | ||
0.40 | 24.08 | 20.884 | 12.7682 | 5.1726 | 9.459 | 0.7188 | 1.1203 | ||
0.50 | 24.1187 | 24.1336 | 15.2086 | 5.0967 | 9.46 | 0.9365 | 1.365 |
St | 07 | Ct | 238 | Lat | 21.5821 | Lon | -105.516 | ||
---|---|---|---|---|---|---|---|---|---|
Date | 01/20/2016 | Hr | 18:37:52 | St_z | 17 | ||||
z | Temp | Sal | Dens | DO | pH | Fl | Tz | ||
0.10 | 23.9734 | 8.456 | 3.6678 | 5.3446 | 9.441 | 0.3818 | 9.2989 | ||
0.20 | 24.1542 | 17.3381 | 10.301 | 4.8585 | 9.444 | 0.5642 | 3.9182 | ||
0.30 | 24.1787 | 18.4805 | 11.1534 | 4.7905 | 9.444 | 0.6246 | 3.7622 | ||
0.40 | 24.1979 | 19.3736 | 11.8196 | 4.733 | 9.444 | 0.7188 | 3.6471 | ||
0.50 | 24.2123 | 20.0474 | 12.3221 | 4.687 | 9.443 | 0.9365 | 3.5634 |
St | 1 | Ct | 229 | Lat_St | 21.5417 | Lon_St | -105.3356 |
---|---|---|---|---|---|---|---|
Date | 01/20/2016 | Hr | 09:47:36 | Lat_Fn | 21.6347 | Lon_Fn | -105.4569 |
Sec | Temp | Sal | Dens | DO | pH | Fl | Tz |
1 | 24.5598 | 30.2758 | 19.8118 | 4.802 | 8.894 | 1.2772 | 3.4625 |
2 | 24.5429 | 29.9572 | 19.5525 | 4.7765 | 8.899 | 1.2749 | 3.477 |
3 | 24.5229 | 29.5673 | 19.2362 | 4.7493 | 8.904 | 1.2722 | 3.4931 |
4 | 24.4985 | 29.1084 | 18.901 | 4.726 | 8.909 | 1.2691 | 3.5109 |
5 | 24.4677 | 28.694 | 18.6712 | 4.7092 | 8.915 | 1.2656 | 3.5306 |
St | 2 | Ct | 234 | Lat_St | 21.6328 | Lon_St | -105.4583 |
---|---|---|---|---|---|---|---|
Date | 01/20/2016 | Hr | 13:13:43 | Lat_Fn | 21.5449 | Lon_Fn | -105.5549 |
Sec | Temp | Sal | Dens | DO | pH | Fl | Tz |
1 | 25.2242 | 31.1414 | 20.3255 | 4.8526 | 9.466 | 1.7212 | 13.1709 |
2 | 25.2231 | 31.0583 | 20.2538 | 4.8352 | 9.466 | 1.718 | 13.4443 |
3 | 25.2219 | 30.9562 | 20.1657 | 4.8166 | 9.467 | 1.7145 | 13.7018 |
4 | 25.2208 | 30.8305 | 20.0574 | 4.7991 | 9.467 | 1.7109 | 13.9319 |
5 | 25.2198 | 30.6897 | 19.9632 | 4.7834 | 9.467 | 1.7072 | 14.158 |
St | 3 | Ct | 237 | Lat_St | 21.5462 | Lon_St | -105.5496 |
---|---|---|---|---|---|---|---|
Date | 01/20/2016 | Hr | 21:18:59 | Lat_Fn | 21.5821 | Lon_Fn | -105.516 |
Sec | Temp | Sal | Dens | DO | pH | Fl | Tz |
1 | 25.5861 | 33.9053 | 22.3355 | 3.3452 | 9.502 | 0.8517 | 6.9395 |
2 | 25.5825 | 33.9047 | 22.3362 | 3.4117 | 9.502 | 0.8534 | 6.9328 |
3 | 25.5782 | 33.9039 | 22.3369 | 3.4876 | 9.502 | 0.855 | 6.9162 |
4 | 25.5733 | 33.9029 | 22.3376 | 3.5734 | 9.502 | 0.8567 | 6.8849 |
5 | 25.5682 | 33.9015 | 22.338 | 3.6739 | 9.502 | 0.8584 | 6.8364 |
St | 4 | Ct | 239 | Lat_St | 21.5856 | Lon_St | -105.5029 |
---|---|---|---|---|---|---|---|
Date | 01/20/2016 | Hr | 20:23:32 | Lat_Fn | 21.6337 | Lon_Fn | -105.4567 |
Sec | Temp | Sal | Dens | DO | pH | Fl | Tz |
1 | 24.8655 | 33.1326 | 21.974 | 4.1661 | 9.466 | 1.5991 | 3.3201 |
2 | 24.8668 | 33.1395 | 21.9789 | 4.1743 | 9.465 | 1.5988 | 3.3223 |
3 | 24.8685 | 33.1479 | 21.985 | 4.185 | 9.465 | 1.5985 | 3.3258 |
4 | 24.8706 | 33.158 | 21.9923 | 4.1997 | 9.465 | 1.5982 | 3.3307 |
5 | 24.8731 | 33.1702 | 22.0014 | 4.2173 | 9.465 | 1.5977 | 3.3373 |
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Revista Bio Ciencias, Año 13, vol. 9, Enero 2022. Sistema de Publicación Continua editada por la Universidad Autónoma de Nayarit. Ciudad de la Cultura “Amado Nervo”, Col. Centro, C.P.: 63000, Tepic, Nayarit, México. Teléfono: (01) 311 211 8800, ext. 8922. E-mail: revistabiociencias@gmail.com, revistabiociencias@yahoo.com.mx, http://revistabiociencias.uan.mx. Editor responsable: Dra. Karina J. G. Díaz Resendiz. No. de Reserva de derechos al uso exclusivo 04-2010-101509412600-203, ISSN 2007-3380, ambos otorgados por el Instituto Nacional de Derechos de Autor. Responsable de la última actualización de este número Dra. Karina J. G. Díaz Resendiz Secretaria de Investigación y Posgrado, edificio Centro Multidisciplinario de Investigación Científica (CEMIC) 03 de la Universidad Autónoma de Nayarit. La opinión expresada en los artículos firmados es responsabilidad del autor. Se autoriza la reproducción total o parcial de los contenidos e imágenes, siempre y cuando se cite la fuente y no sea con fines de lucro.
Revista Bio Ciencias por Universidad Autónoma de Nayarit se encuentra bajo una licencia de Creative Commons Reconocimiento-NoComercial-SinObraDerivada 4.0 Internacional
Fecha de última actualización 9 de Junio de 2022
licencia de Creative Commons Reconocimiento-NoComercial-SinObraDerivada 4.0 Internacional
Dra. Karina J. G. Díaz Resendiz