Characterization of the Sea of Cortez: Overview and Analysis by Erin Reed
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Erin Reed
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Background
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Work done to date
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Problems encountered
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Future work
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Between mainland Mexico and
Baja California
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150 Km
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and 1,100 Km
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Depths
200 m
(N. Gulf) to
3,600
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at (S. Gulf)
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Upper GOC
(N.Gulf) “inverse
estuary” yearly temp range
32C-
8C
Figure 1 Lavin and Marinone 1998
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Small scale fisheries are of high economic value in GOC
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Aggregate spawners
, problem for fish, ideal for human
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Gulf Corvina spawns with lunar cycles, primarily
April
Not cool
man!!
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NOAA Climate Data
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ESRL PSD
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Variables
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SST
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U-wind
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V-wind
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Data Range 1960-2013
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This project
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April, 1974 only
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Identify – obtain general idea of
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Conversion Tool
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Converted from Raster to point
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Manipulate data easier
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Sampling Stations
1-154
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U- wind and V-wind
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SST
1-155
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Tool: Extract values to points
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Now can compare values
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Inside of Sea of Cortez
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Pacific Side Baja Peninsula
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Obtaining Data
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Selecting appropriate data
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Month/year
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Formatting three variables together
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Fixing data inconsistencies (gaps)
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Different numbers of sampling sites
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GIS:
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3 sections, North, Central, South
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Contrast Pacific vs. Sea of Cortez
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Hot spot tool
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Environmental tracers for migrations
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Salinity, SST
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Gonzalo Espinoza
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Dr. Maidment
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Dr. Erisman
The Sea of Cortez, also known as the Gulf of California, is a unique marine ecosystem located between mainland Mexico and Baja California. This article presents an in-depth exploration of the sea's importance as habitat and nursery grounds for marine life, focusing on the challenges and opportunities it presents for both fish populations and human activities. The use of GIS technology for data characterization and analysis is discussed, shedding light on the ongoing efforts to study and understand this ecologically significant region.
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Presentation Transcript
A Characterization of the A Characterization of the Sea of Cortez Sea of Cortez Gulf of California Gulf of California By Erin Reed
Outline for today Outline for today Background Work done to date Problems encountered Future work
Background: Background: Between mainland Mexico and Baja California 150 Km wide and 1,100 Km long Depths 200 m (N. Gulf) to 3,600 m at (S. Gulf) Upper GOC (N.Gulf) inverse estuary yearly temp range 32C- 8C Figure 1 Lavin and Marinone 1998
Important Habitat and Nursery Grounds Important Habitat and Nursery Grounds Not cool man!! Small scale fisheries are of high economic value in GOC Aggregate spawners, problem for fish, ideal for human Gulf Corvina spawns with lunar cycles, primarily April
GIS Characterization GIS Characterization NOAA Climate Data ESRL PSD Variables SST U-wind V-wind Data Range 1960-2013 This project April, 1974 only
GIS Characterization: Conversion GIS Characterization: Conversion Identify obtain general idea of the content Conversion Tool Converted from Raster to point Manipulate data easier
GIS Characterization: Sampling Stations GIS Characterization: Sampling Stations Sampling Stations 1-154 U- wind and V-wind SST 1-155 Tool: Extract values to points Now can compare values Inside of Sea of Cortez Pacific Side Baja Peninsula
GIS Characterization: Beginnings of analysis GIS Characterization: Beginnings of analysis
GIS Characterization: Beginnings of Analysis GIS Characterization: Beginnings of Analysis SST (C) 22.5 Station ID Distance (km) SST ( C) V-wind (N/S) U-wind (E/W) 22 20 142.96 19.52 4.37 1.86 21.5 TEMPERATURE (C) 31 313.21 18.87 2.5 1.38 21 50 590.41 20.36 -3.51 2.19 20.5 63 757.92 20.45 -1.87 1.46 20 76 924.62 22.2 -0.66 -2.07 19.5 89 1090.55 21.9 -1.11 1.22 19 104 1255.75 21.03 -1.31 1.07 18.5 0.00 200.00 400.00 600.00 DISTANCE (KM) 800.00 1000.00 1200.00 1400.00
Problems Encountered Problems Encountered Obtaining Data Selecting appropriate data Month/year Formatting three variables together Fixing data inconsistencies (gaps) Different numbers of sampling sites
Future Work Future Work GIS: 3 sections, North, Central, South Contrast Pacific vs. Sea of Cortez Hot spot tool Environmental tracers for migrations Salinity, SST
Thank you!! Thank you!! Gonzalo Espinoza Dr. Maidment Dr. Erisman
