Hogrefe Natural Systems Analysis in collaboration with
Davey Jones Locker GIS Laboratory, Oregon State Universtiy for
Coral Reef Ecosystem Division, NOAA Pacific Islands Fisheries
Science Center, Pacific Islands Benthic Habitat Mapping Center
20090205
Mosaic of gridded multibeam bathymetry, gridded LiDAR bathymetry
and bathymetry derived from multispectral IKONOS satellite imagery of
Tinian Island, Commonwealth of the Northern Marianas Islands, USA
raster digital data
http://www.soest.hawaii.edu/pibhmc/cms/data-by-location/cnmi-guam/tinian-island/bathymetry/
Gridded multibeam bathymetry is integrated with gridded LiDAR
bathymetry and bathymetry derived from multispectral IKONOS satellite
data. Gridded (5 m cell size) multibeam bathymetry collected aboard NOAA
Ship Hiialaka'i and R/V AHI. LiDAR/multibeam bathymetry mosiac provided by
the U.S. Navy through PIBHMC. Bathymetry values shallower than 25 m were
derived by gauging the relative attenuation of blue and green spectral
radiance as a function of depth (as gauged by LiDAR data). A multiple
linear regression analysis of linearized blue and green band spectral
values against depth determined the variables of y-intercept, blue slope
and green slope values. Variables then used in multivariate slope intercept
formula to derive depth. Variables were adjusted to improve the statistical
accuracy and spatial coverage of the final derived bathymetry product.
Digital image processing to derive depths conducted with the ENVI 4.5
software program while data editing and integration was performed using
ArcGIS 9.3. This dataset is for the shelf environment of Tinian Island,
Commonwealth of the Northern Marianas Islands, USA.
The data were derived in support of NOAA Coral Reef Conservation
Program goals. Goal 1 is to map all U.S. Coral Reef Ecosystems.
This data set specifically addresses Objective 1 and 4: to develop
high-resolution benthic maps and to characterize priority deep
water reefs and associated habitats. This integration of derived
bathymetry with multibeam sonar and LiDAR data provides a GIS layer with
expanded spatial coverage that may be used for benthic and essential
fish habitat characterization, and for the study of geologic features.
By combining the dataset with other bathymetry, backscatter, derivatives,
and in situ data, they collectively compose benthic habitat maps
designed to be used to understand and predict shallow depth (0m to 150m)
benthic habitats for organisms that inhabit coral reef ecosystems.
Gridded multibeam data were collected aboard the Hi'ialakai, a 218'
United States National Oceanographic and Atmospheric Administration
(NOAA) research ship, and aboard the R/V AHI (Acoustic Habitat
Investigator), a 25' survey launch owned and operated by the NOAA
Pacific Islands Fisheries Science Center in Honolulu, HI. The
metadata for the bathymetry is documented in the product metadata,
tinian_5m.txt.
http://www.soest.hawaii.edu/pibhmc/pibhmc_cnmi_tin.htm
Gridded LiDAR and multibeam data were provided as an integrated dataset
by the U.S. Navy through PIBHMC. No metadata were provided.
Original IKONOS imagery was purchased to support the Pacific Islands
Geographic Information System (GIS) project and National Ocean Service's
(NOS) coral mapping activities. Orthographically corrected IKONOS Imagery
was provided by NOAA's National Centers for Coastal Ocean Science, Center
for Coastal Monitoring and Assessment. The metadata for this IKONOS
imagery is documented in the original product metadata, po_83233_metadata
(http://www.soest.hawaii.edu/pibhmc/)
20001119
20070608
ground condition
As needed
145.501531
145.755853
15.151218
14.803071
NCEI Geoportal FilterCoRIS_Metadata
CRCP Project
Benthic Habitat Mapping and Characterization - Commonwealth of the Northern Mariana Islands and Guam
1398
CoRIS Theme Thesaurus
EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry
EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Water Depth
EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Remote Sensing > Satellite (digital scans) > IKONOS
ISO 19115 Topic Category
elevation
006
CoRIS Discovery Thesaurus
Geographic Information > Bathymetry
None
Slope
Bathymetry
Multibeam sonar
None
Tinian Island
Commonwealth of the Northern Marianas Islands
United States of America
CoRIS Place Thesaurus
OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Tinian Island Reefs > Tinian Island (14N145E0005)
COUNTRY/TERRITORY > Northern Mariana Islands > Tinian > Tinian Island (14N145E0005)
CoRIS Region
CNMI
None
These data are not to be used for navigation
purposes. Please acknowledge NOAA Pacific Islands Fisheries
Science Center, the Joint Institute for Marine and
Atmospheric Research (JIMAR) University of Hawaii and Davey
Jones Locker GIS Laboratory Oregon State University as the
sources of this information.
http://www.soest.hawaii.edu/pibhmc/CNMI_images/Tin_bathymetry_mb&IKONOS_445.jpg
Gridded Bathymetry
jpeg
NOAA PIFSC CRED, the Pacific Islands Benthic Habitat
Mapping Center and Davey Jones Locker GIS Laboratory
Oregon State University
Not applicable
Unclassified
Not applicable
ArcGIS ASCII file or ArcGIS Grid file,
bathymetry derived from 4x4m multispectral satellite imagery (IKONOS)
using ENVI 4.5, multibeam, LiDAR and derived bathymetry were integrated using
ArcGIS 9.3
Data are collected for resource
management and research purposes and are tested for
internal consistency; however, no effort is made to compare
these data to external references or to other published data.
These data are believed to be logically
consistent though no tests were performed
Complete
Horizontal positioning system: GPS C/A
Horizontal position accuracy: 25 meters
Range resolution of sonar: varies with depth
Raw sounding resolution: varies with depth
Vertical accuracy of gridded sonar product: ~ 1% of water depth
Vertical accuracy of derived bathymetry product: 5 meter range
Multiple tools in ENVI 4.3 were used to complete the following
processing steps: Data conversion from digital number to radiance,
correction for atmosphere and water surface reflection,
linearization of spectral decay as function of depth, masking of
non-applicable values, and bathymetric derivation using variables
from multiple linear regression analysis. Multiple tools in
ArcGIS 9.3 were used for dataset integration and to extract values
for the multiple linear regression analysis and subsequent error
analyses. The statisitcs program S-Plus was used for the multiple
linear regression analysis to provide original variables for depth
derivation. The multivariate slope intercept formula used to
derive depth was Depth=Yint+(Mblue)(Xblue)+(Mgreen)(Xgreen). Six
derived products, two from the image tinian_233_msi.pix (Tin233),
two from the image tinian_109297_msi_000_rat.img (Tin297-00) and two
from the image tinian_109297_msi_001_rat.img (Tin297-01), were
integrated to expand spatial coverage.
The original MLR variables for Tin233 were Yint=15.9113,
Mblue=-11.1089, and Mgreen=29.2445. The product derived from these
variables (Tin233_LiDB) was mosaiced with the product derived using
a reduced Y-intercept values of 9.9113 (Tin233_LiDB1) to increase coverage
in shallow areas. Data from Tin233_LiDB replaced concurrent data from
tin233_LiDB1 during integration due to better statistical accuracy.
The original MLR variables for Tin297-00 were Y-int=6.8424,
Mblue=-15.0336, and Mgreen=25.0675. The product derived from these
variables (Tin29700_LiDB) was mosaiced with the product derived using
reduced linearized blue and green band slope values of -8.0337 and
18.0675 (Tin29700_LiDB4) to increase coverage in shallow areas. Data
from Tin29700_LiDB replaced concurrent data from Tin29700_LiDB4 during
integration due to better statistical accuracy.
The original MLR variables for Tin297-01 were Yint=-7.5628,
Mblue=-17.6634, and Mgreen=23.1723. The product derived from these
variables (Tin29701_LiDB) was mosaiced with the product derived using
a reduced Y-intercept value of -7.5628 (Tin29700_LiDB1) to increase
coverage in shallow areas. Data from Tin29701_LiDB replaced concurrent
data from Tin29701_LiDB1 during integration due to better statistical
accuracy.
The derived bathymetry mosaics from each image were in turn mosaiced
giving the data from image Tin297-01 first priority, Tin233 second
priority and Tin297-00 third priority due to the better statistical
accuracy. Data from higher priority datasets replaces that of lower
priority datasets where data are concurrent. This mosaiced derived
bathymetry product (TinLiDBallMos) was then integrated with the LiDAR and
multibeam sonar data, with sonar data prioritized over LiDAR and lowest
priority assigned to the derived data, to create the final product
(TinMBLiDBmos).
A detailed description of all processing steps is available at:
http://oregonstate.edu/~hogrefek/Cookbook/Cookbook_042108.pdf
An error analysis of each derived bathymetry grid used is available
upon request.
20090204
Raster
Pixel
7670
5423
1
Universal Transverse Mercator
55
0.999600
147.000000
0.000000
500000.000000
0.000000
Row and Column
5.000000
5.000000
meters
D_WGS_1984
WGS_1984
6378137.000000
298.257224
NOAA PIFSC CRED PIBHMC and DJLab OSU
Kyle Hogrefe
mailing and physical address
104 Wilkinson Hall, Oregon State University
Corvallis
Oregon
97331
USA
541-740-8444
hogrefek@geo.oregonstate.edu
Downloadable Data
These data are not to be used for navigational purposes.
NOAA makes no warranty regarding these data, expressed or implied,
nor does the fact of distribution constitute such a warranty.
NOAA cannot assume liability for any damages caused by any errors
or omissions in these data, nor as a result of the failure of
these data to function on a particular system.
Arc Grid
Arc Grid can be opened directly using
ArcMap or ArcCatalog.
http://www.soest.hawaii.edu/pibhmc/cms/data-by-location/cnmi-guam/tinian-island/bathymetry/
None
20190605
20091222
Kyle Hogrefe
NOAA PIFSC CRED PIBHMC and DJLab OSU
mailing and physical address
104 Wilkinson Hall, Oregon State University
Corvallis
Oregon
97331
USA
541-740-8444
hogrefek@geo.oregonstate.edu
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
Universal Time
None
None
20091222060508
None
20001119
20070608
https://www.coris.noaa.gov/metadata/records/html/tin_mb_li_db_mos_metadata.html
4379