Kelp Habitat - North Central Region - 2010 [ds1195]

SDE Feature Class

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Download this dataset

Tags
MPA, Earth cover, base maps, imagery, kelp, Northern California Coast, biota, multispectral imagery, environment, ADS40, imageryBaseMapsEarthCover, California, MPA Baseline Program, DMSC, Ocean Imaging, oceans, substrate, Sea Grant, oceans, environment


Summary

[This is an aggregated dataset of the 15 California North Central Coast kelp habitat shapefiles. The shapefiles were aggregated into a single feature class for better functionality in BIOS.] This vector dataset was developed for the Sea Grant MPA Baseline Program as part of the project High Resolution Nearshore Substrate Mapping and Persistence with Multispectral Aerial Imagery (#R/MPA17 09-015). The study region is the California North Central Coast (NCC). Ocean Imaging acquired the imagery used for this analysis on 11/02/2010 using the Digital Multispectral Camera (DMSC). Fugro EarthData acquired the imagery used for this project between 09/22/2010 09/23/2010 and delivered fully georeferenced and orthorectified, 12-bit imagery with a spatial resolution of 0.30 meters to OI in 2011. Details on these systems and the data processing are below in the Lineage section of this document. Individual DMSC and ADS40 image tiles were mosaicked into sections based on the USGS orthoquads for the California North Central Coast in order to generate the image products required to generate this merged kelp habitat classification covering the California North Central Coasts kelp beds from Pigeon Point up to Point Arena. The MPAs contained in each of the USGS orthoquads as well as additional information on the classification procedures used are outlined in the Lineage section of this document.

Description

This vector dataset contains habitat classification of the offshore giant kelp beds along the California North Central Coast region from Pigeon Point up to Point Arena, including select bays and river mouths designated as MPAs.

Credits

Use limitations

None

Extent

West -123.750005 East -122.688338
North 38.972760 South 37.891468

Scale Range
Maximum (zoomed in) 1:5,000
Minimum (zoomed out) 1:150,000,000

ArcGIS Metadata

Topics and Keywords

Themes or categories of the resource imageryBaseMapsEarthCover, environment, biota, oceans


* Content type Downloadable Data
Export to FGDC CSDGM XML format as Resource Description No

Place keywords California

Theme keywords biota, environment, imageryBaseMapsEarthCover, oceans

Thesaurus
Title ISO 19115 Topic Categories




Theme keywords MPA, Earth cover, base maps, imagery, kelp, Northern California Coast, biota, multispectral imagery, ADS40, California, MPA Baseline Program, DMSC, Ocean Imaging, oceans, substrate, Sea Grant, environment

Citation

Title Kelp Habitat - North Central Region - 2010 [ds1195]
Publication date 2013-04-1700:00:00


Presentation formats digital map
FGDC geospatial presentation format vector digital data


Citation Contacts

Responsible party
Organization's name Ocean Imaging
Contact's role originator


Contact information
Address
Type both
Delivery point 13976 W. Bowles Ave. Ste 100
City Littleton
Administrative area Colorado
Postal code 80127
Country US

Hours of service
M-F 9:00 AM - 5:00 PM MST


Responsible party
Individual's name Mark Hess and Keith Jackson
Organization's name Ocean Imaging
Contact's role point of contact


Contact information
Phone
Voice 303-948-5272

Address
Type both
Delivery point 13976 W. Bowles Ave. Ste 100
City Littleton
Administrative area Colorado
Postal code 80127
Country US
e-mail address mhess@oceni.com

Hours of service
M-F 9:00 AM - 5:00 PM MST


Resource Details

Dataset languages English(UNITED STATES)
Dataset character set utf8 - 8 bit UCS Transfer Format


Status completed
Spatial representation type vector


* Processing environment Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.5.1.7333


ArcGIS item properties
* Name Kelp Habitat - North Central Region - 2010 [ds1195]
* Size 6.920
* Location Server=; :; Database=; User=; Version=
* Access protocol ArcSDE Connection

Extents

Extent
Geographic extent
Bounding rectangle
West longitude -123.450531
East longitude -123.061349
South latitude 38.349645
North latitude 38.698

Extent
Geographic extent
Bounding rectangle
Extent type Extent used for searching
* West longitude -123.750005
* East longitude -122.688338
* North latitude 38.972760
* South latitude 37.891468
* Extent contains the resource Yes

Extent in the item's coordinate system
* West longitude -13775787.489100
* East longitude -13657603.365200
* South latitude 4564105.138900
* North latitude 4717770.448200
* Extent contains the resource Yes

Resource Maintenance

Resource maintenance
Update frequency not planned


Resource Constraints

Constraints
Limitations of use

None


Spatial Reference

ArcGIS coordinate system
* Type Projected
* Geographic coordinate reference GCS_WGS_1984
* Projection WGS_1984_Web_Mercator_Auxiliary_Sphere
* Coordinate reference details
Projected coordinate system
Well-known identifier 102100
X origin -20037700
Y origin -30241100
XY scale 10000
Z origin 0
Z scale 1
M origin 0
M scale 1
XY tolerance 0.001
Z tolerance 0.001
M tolerance 0.001
High precision true
Latest well-known identifier 3857
Well-known text PROJCS["WGS_1984_Web_Mercator_Auxiliary_Sphere",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Mercator_Auxiliary_Sphere"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",0.0],PARAMETER["Standard_Parallel_1",0.0],PARAMETER["Auxiliary_Sphere_Type",0.0],UNIT["Meter",1.0],AUTHORITY["EPSG",3857]]

Reference system identifier
* Value 3857
* Codespace EPSG
* Version 8.8(9.3.1.2)


Spatial Data Properties

Georectified Grid
Number of dimensions 2


Axis dimensions properties
Dimension type row (y-axis)
Dimension size 15430

Axis dimensions properties
Dimension type column (x-axis)
Dimension size 13532

Cell geometry area


Transformation parameters are available No


Check points are available No




Vector
* Level of topology for this dataset geometry only


Geometric objects
Feature class name DS1195_20150528
* Object type composite
* Object count 287783



Vector
* Level of topology for this dataset geometry only


Geometric objects
Feature class name DS1195_20150528
* Object type composite
* Object count 287783



ArcGIS Feature Class Properties
Feature class name DS1195_20150528
* Feature type Simple
* Geometry type Polygon
* Has topology FALSE
* Feature count 287783
* Spatial index TRUE
* Linear referencing FALSE



Data Quality

Lineage

Lineage statement
This habitat classification product was created using the ESRI ArcGIS 10.0 and 10.1 Geoprocessing tools. The supervised Maximum Likelihood classification technique was used. Thematic maps showing kelp were created from the 2 meter DMSC data. Ocean and weather conditions during the November 2010 DMSC data collection time period were poor resulting in extreme wihtewas in the imagery as well as depleted kelp beds, therefore when available, ADS40 imagery acquired on 09/22/2010 was resampled to 1 meter GSD and kelp classifiactions were created using this data set as well. Kelp classification products were generated from both of these image sets. A 'merged' kelp product was also produced by combining the DMSC-created and ADS40-created classifications. These products are listed as 'merged' in the file name. Each kelp classification was manually edited in order to ensure the highest accuracy product possible and then mosaicked together into USGS orthoquad regions for delivery. Final classification product files have been delivered to Sea Grant and OceanSpaces in both ERDAS Imagine (.img) and ESRI shapefile formats. Additional information about the imagery used to create this classification is in the Data Source and Process Step sections below.
Process step
Description
DMSC Data Processing: Upon completion of each flight, image data were downloaded from the DMSC onto an in-house computer hard drive and back-up copies were burned on DVD's. Pre-processing included a two-step procedure to eliminate slight band-to-band misalignment. This was done using customized software to first compute an overall x-y direction shift of bands 1, 3 and 4 relative to band 2. Each of the 4-band shifted image frames was then run through a Fast Fourier Transform (FFT)-based pattern recognition routine, which tiles the image into 80 pixel sections and computes a secondary, regional pixel shift on each band. Image Georeferencing/Mosaicking: The pre-processed imagery was then run through an in house customized software package to auto-georeference each of the pre-processed frames based off of the DGPS time stamp from the DMSC and the time stamp from the IMU. Once auto-georeferenced, frames were manually adjusted (shifted and or rotated) where needed. Adjusted frames were then mosaicked into USGS orthoquad regions for more efficient classification and data management using ERDAS Imagine. Mosaicked imagery was then used to generate this kelp habitat classification products. Final image mosaic files have been delivered to Sea Grant and Ocean Spaces in both ERDAS Imagine (.img) and GeoTif (.tif) formats. Classicification products have been delivered in both .img and ESRI Shape File formats.




Process step
Description
The California Department of Fish and Wildlife aggregated 15 individual kelp habitat shapefiles for the California North Central Coast. The shapefiles were merged into this feature class for better functionality in BIOS.]




Source data
Description
Ocean Imaging (OI) owns and operates a 4-channel aerial imaging sensor - the DMSC - manufactured by SpecTerra, LTD in Australia. The unit incorporates 4 synchronized, progressive scan 1024x1024 CCD cameras with spectral range capability from 350-990nm. Data is captured in 12-bit format. The unit is integrated with a DGPS for synchronous frame location logging. The channel wavelengths are customized by the use of narrow-band (10-20nm) interference filters. Spectral sensitivity is also customizable through software controlled shutter speed. The DMSC is a portable system suitable for mounting on a variety of aircraft. It acquires successive image frames at a rate automatically computed from the DGPS-derived ground speed and user-specified frame-to-frame overlap margin. OI also owns and Inertial Movement Unit (IMU) which collects precise location, altitude, roll, pitch and heading of the DMSC. The IMU was run in tandem during image collection and data collected will be used in the post-processing of the imagery. OI used a filter combination of 451-551-710-850 nm Data Acquisition: Imagery for the Central-Northern California coast kelp mapping was acquired on 11/02/2010 at an altitude of 12500 feet with 60% scene overlap resulting in an initial ground sampling distance of 2.0 meters. Imagery was acquired from a Cessna 206 aircraft by Ocean Imaging staff. Ocean Imaging (OOI) acquired 4-banded, multispectral Orthoimagery from Fugro EarthDatas ( http://www.fugroearthdata.com/index.php) Leica ADS40-SH52 digital camera system. The ADS40 is a 12 CCD pushbroom sensor with a raw camera resolution of 3,000 x 2,000 pixels for the multispectral data. It utilizes 4 panchromatic CCD: 27 degrees forward view, 16 degrees backward view, two nadiral views with an overlapping of 3,25 microns and 2 x 4 multispectral CCD (red, green, blue and near infrared RGB-NIR), with both a nadiral and 16 degree backward views. There are five spectral channels measuring simultaneously: panchromatic, red ( = [590 675]nm), green ( = [500 650]nm), blue ( = [400 580]nm) and near infrared ( = [675 850]nm). The RGB-NIR bands were used for this project. Fugro EarthData acquired the imagery used for this project between 09/22/2010 09/23/2010 and delivered fully georeferenced and orthorectified, 12-bit imagery with a spatial resolution of 0.30 meters to OI in 2011. The initial imagery products received from Fugro were mosaicked into 1500x1500 meter tiled imagery along the California coast. OI subsequently mosaicked the ADS40 data into USGS orthoquad regions for more efficient classification and data management using ERDAS Imagine. Mosaicked imagery was then used to generate the habitat classification products. Final image mosaic files have been delivered to Sea Grant and Ocean Spaces in both ERDAS Imagine (.img) and GeoTif (.tif) formats. ADS40 imagery used for the kalp classification were resampled to a GSD of 1.0 meters.




Geoprocessing history

Distribution

Distribution format
* Name SDE Feature Class


Transfer options
* Transfer size 6.920


Online source
Location https://www.wildlife.ca.gov/Data/BIOS
Function performed information

Online source
Location ftp://ftp.wildlife.ca.gov/BDB/GIS/BIOS/Public_Datasets/1100_1199/ds1195.zip
Function performed download

Fields

Details for object DS1195_20150528
* Type Feature Class
* Row count 287783


Field OBJECTID
* Alias OBJECTID
* Data type OID
* Width 4
* Precision 10
* Scale 0
* Field description
Internal feature number.
* Description source
Esri
* Description of values
Sequential unique whole numbers that are automatically generated.




Field Shape
* Alias Shape
* Data type Geometry
* Width 4
* Precision 0
* Scale 0
* Field description
Feature geometry.
* Description source
ESRI
* Description of values
Coordinates defining the features.




Field GRIDCODE
* Alias GRIDCODE
* Data type Double
* Width 8
* Precision 38
* Scale 8
Field description
9 - Kelp Habitat


Field Shape.STArea()
* Alias Shape.STArea()
* Data type Double
* Width 0
* Precision 0
* Scale 0




Field Shape.STLength()
* Alias Shape.STLength()
* Data type Double
* Width 0
* Precision 0
* Scale 0






Metadata Details

Metadata language English(UNITED STATES)
Metadata character set utf8 - 8 bit UCS Transfer Format


Scope of the data described by the metadata dataset
Scope name * dataset


* Last update 2017-09-07


ArcGIS metadata properties
Metadata format ArcGIS1.0
Metadata style FGDC CSDGM Metadata
Standard or profile used to edit metadata FGDC


Created in ArcGIS for the item 2015-05-2811:47:06
Last modified in ArcGIS for the item 2017-09-0709:35:55


Automatic updates
Have been performed Yes
Last update 2017-09-0709:35:55


Metadata Contacts

Metadata contact
Individual's name Mark Hess and Keith Jackson
Organization's name Ocean Imaging
Contact's role point of contact


Contact information
Phone
Voice 303-948-5272

Address
Type both
Delivery point 13976 W. Bowles Ave. Ste 100
City Littleton
Administrative area Colorado
Postal code 80127
Country US
e-mail address mhess@oceni.com

Hours of service
M-F 9:00 AM - 5:00 PM MST


Metadata Maintenance

Maintenance
Update frequency not planned


Metadata Constraints

Constraints
Limitations of use

None


Thumbnail and Enclosures