Dataset: Baja Safe Spaces 2018: MiniDots

Name: Dissolved oxygen and temperature from Nearshore Isla Natividad, Baja California Mexico from July to August of 2018
Published: 2022-03-24
Keywords: oceans

Cite This Dataset

DOI:10.26008/1912/bco-dmo.872351.1

Spatial Extent: N:27.8903 E:-115.166 S:27.863 W:-115.215

Temporal Extent: 2018-07-25 - 2018-08-15

Project:

Collaborative Research: Evaluating how abalone populations in the California Current are structured by the interplay of large-scale oceanographic forcing and nearshore variability (Abalone Safe Places)

Principal Investigator:

Stephen G. Monismith (Stanford University)

Co-Principal Investigator:

Clifton Brock Woodson (University of Georgia, UGA)

Scientist:

Derek Fong (Stanford University)

Student:

Margaret Daly (Stanford University)

BCO-DMO Data Manager:

Amber D. York (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2022-03-24

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Dissolved oxygen and temperature from Nearshore Isla Natividad, Baja California Mexico from July to August of 2018

Abstract:

Dissolved oxygen and temperature data collected as part of a Nearshore study conducted Isla Natividad, Baja California Mexico from July to August of 2018 that included currents, water level, wave data, temperature, and dissolved oxygen.

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Archival Copy

Version Date	Archive	Persistent Identifier	Date Assigned
2022-03-24	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.26008/1912/bco-dmo.872351.1	2023-05-22

Methods & Sampling

Location: Isla Natividad, Baja California, Mexico (27º53.215 N, 115º11.325 W depth 15-30m)

From July - Aug of 2018, numerous instruments were deployed around Isla Natividad in Baja California Mexico. These included PME MiniDots that were deployed 1 meter above the bottom.

Folders and filenames included in this dataset contain transect and target depth identifiers.
Prefix letters represent a cross-shore transect line and the 2 numerals represent the approximate target depth of a mooring along that line. There were 4 transects (LG,PP, MP, BB) and moorings were targeted at 15, 20, and 25m on each transect. For example "BB15" indicates transect BB and target mooring depth of 15m. See the supplemental file "deploy_info.csv" for a list of transect-mooring deployments included in this dataset.

Data Processing Description

MATlab 2019 b is used for all QA/QC and processing. PME MiniDots output a Q for quality control. Any data where Q>0.7, data was defined with a NaN.

BCO-DMO Data Manager Processing Notes:

* .mat file context examined and example structures provided in data file descriptions.
* .mat and .txt vector and array exports provided by the submitter were bundled into .zip files and attached to dataset.
* deploy_info.csv was created by extracted the contents of every *_Info*.txt file within the provided file hierarchy. The Deployment ID was extracted from the filename of the _Info file.
* ISO_DateTime_UTC_Start was added as a column by converting start time in Mountain Time

Data Files

File

MiniDOT data (matlab and vectors txt files)
filename: MiniDots.zip

(ZIP Archive (ZIP), 337.79 KB)
MD5:7cee3eaca381a17498b56857863eed9e

MiniDOT data.  
Contains matlab .mat files and txt files containing exported vectors from the .mat file.

This file bundle contains subfolders named by deployment ID (transectID+target_depth).  Each folder contains a file ending with _Info.txt which contains deployment information such as start and end time, lat,lon, depth, units.

Within each folder is the .mat file for the deployment containing a structure "DATA"

% example DATA struct                                  
    %   DATA      1x1             88288  struct              
    % 
    %   Temp: [2738×1 double]
    %     DO: [2738×1 double]
    % DO_sat: [2738×1 double]
    %   Time: [2738×1 double]

Units: temperature (Celcius), DO (mg/L), DO Saturation (%)

Time is a matlab datenum type in time zone Mountain Time (MT).

Supplemental Files

File

Deployment Information
filename: deploy_info.csv

(Comma Separated Values (.csv), 5.04 KB)
MD5:85b804862d2c8f74418595fe27222216

Deployment Information for transects and moorings.

Columns (parameter) info:
Data_Type, Data type collected (e.g. MiniDOT,CTD)
Deployment_ID, Deployment identifier. Prefix letters represent a cross-shore transect line and the 2 numerals represent the approximate target depth of a mooring along that line. 
Transect_ID, There were 4 transects (LG,PP, MP, BB). 
Target_Depth,  Moorings targed deployment depth along transect. Targeted at 15, 20, and 25m on each transect.
Start_Date,Start Date local time zone (MT) in format "%d-%b-%Y %H:%M:%S"
End_Date, End Date local time zone (MT)  in format "%d-%b-%Y %H:%M:%S"
Time_Zone, Timezone (MT, mountain time) used for Start_Date and End_Date
ISO_DateTime_UTC_Start, Start Date time zone UTC in ISO 8601 format "%Y-%m-%dT%H:%M:%SZ"	
Latitude, latitude in decimal degrees
Longitude, longitude in decimal degrees
Units,units used for the data type
Depth, notes "Bottom(seafloor) or no value"

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1736830

Deployments

None available yet

Instruments

PME MiniDOT Logger

Supplied Name: PME MiniDots

Supplied Description:

Instrument Type

Generic Name: PME MiniDOT Logger

Generic Description:

The PME miniDOT logger is a submersible sensor designed to measure water temperature and dissolved oxygen concentration. Dissolved oxygen is measured by an optode that measures lifetime-based luminescence quenching of a thin membrane. The sensing foil contains a coating with a variable fluorescence depending on the oxygen concentration of the surrounding water. The miniDOT reports in milligrams per liter (mg/L) and logs all measurements to an internal SD card. Also featured is a temperature sensor and batteries. Data can be offloaded to a computer via USB cable. The logger has an accuracy of +/- 5 percent (+/- 0.3 mg/L) for oxygen, and +/- 0.1 degrees Celsius for temperature. Temperature range is 0 to 35 degrees Celsius, oxygen range is 0 to 150 percent saturation. Depth-rated to 300 meters.

Instrument description from the manufacturer: https://www.pme.com/products/minidot

Parameters

None available yet

Database

Contribute Data

Dataset: Baja Safe Spaces 2018: MiniDots