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Sedimentary Environment, Hudson River estuary, 2004

Identification Information
Citation
Originator
Lamont-Doherty Earth Observatory, Columbia University
Publication Date
2005
Title
Sedimentary Environment, Hudson River estuary, 2004
Geospatial Data Presentation Form
vector digital data
Online Linkage
https://cugir.library.cornell.edu/catalog/cugir-007885
Abstract
This dataset provides sedimentary environments of the Hudson River Estuary from Verrazano Narrows Bridge to Troy. Areas of the Hudson River shallower than 4 meters have not been surveyed and sampled completely. The sedimentary environment interpretation is based on the evaluation of Chirp sub-bottom acoustic profiler data in conjunction with acoustic backscatter and bathymetry data. It is subdivided into depositional, erosional, and dynamic classes that are further subdivided, depending on the details identified in the sub-bottom data, or because of their location. A more complete description of this interpretation can be found in Nitsche et al. (2004) and Nitsche et al. (2005)
Purpose
In 1996, the New York State Department of Environmental Conservation (DEC) initiated an effort to map the benthic habitat of the Hudson River Estuary as part of a larger Hudson River Action Plan. This project includes extensive mapping using sidescan sonar, sub-bottom profiling, single and multi-beam bathymetric sonars, as well as collecting ground truth data with sediment cores, grab samples, and sediment profiling imagery (SPI). The goal of the project is the creation of a comprehensive data set that includes detailed interpretive maps of the physical environment of the floor of the estuary. An overview of the first phase of the benthic mapping project can be found in Bell et al. (2006)
Supplemental Information
See also http://benthic.info More extensive discussion of the methods and interpretation can be found in the following publications: Bell, R.E., et al., 2006. "Benthic habitat mapping in the Hudson River Estuary", in The Hudson River Estuary (Levinton and Waldman, eds.), Cambridge Univ Press., pp. 51-64. // Carbotte, S.M., et al., 2004. Environmental change and oyster colonization within the Hudson River estuary linked to Holocene climate. Geo-Marine Letters 24: 212-224. // McHugh, C.M.G., et al., 2004. Spatial variations in a condensed interval between estuarine and open marine settings: Holocene Hudson River Estuary and adjacent continental shelf. Geology 32(2): 169-172. // Nitsche, F.O., et al., 2004. Process-related classification of acoustic data from the Hudson River Estuary. Marine Geology 209(1-4): 131-145. // Nitsche, F.O. et. al., 2005. Integrative acoustic mapping reveals Hudson River sediment processes and habitats. EOS 86(24): 225. // Nitsche, F.O. et al., 2005. "A seabed classification approach based on multiple acoustic sensors in the Hudson River Estuary", in High Resolution Morphodynamics and Sedimentary Evolution of Estuaries (FitzGerald and Knight, eds.), Springer, pp. 33-55. // Pekar, S.F., et al., 2004. Estuarine processes and their stratigraphic record: paleosalinity and sedimentation changes in the Hudson Estuary (North America). Marine Geology 209(1-4): 113-129. // Strayer, D.L., et al., 2006. Using geophysical information to define benthic habitats in a large river. Freshwater Biology 51: 25-38.
Temporal Extent
Currentness Reference
ground condition
Time Period
Beginning
1998
End
2004
Bounding Box
West
-74.10704
East
-73.685001
North
42.751991
South
40.602704
Theme Keyword
estuary
sediments
Theme Keyword Thesaurus
None
ISO Topic Category
geology
environment
inlandWaters
oceans
Theme Keyword
environment
inland waters
oceans
Theme Keyword Thesaurus
CUGIR Category
Place Keyword
Hudson River (N.Y. and N.J.)
Hudson River Estuary (N.Y. and N.J.)
Place Keyword Thesaurus
LCSH
Temporal Keyword
Access Restrictions
none
Use Restrictions
none
Status
Complete
Maintenance and Update Frequency
None planned
Point of Contact
Contact Person
John Ladd
Delivery Point
Bard College Field Station
City
Annandale
State
New York
Postal Code
12504
Country
USA
Contact Telephone
845-758-7010
Contact Electronic Mail Address
jxladd@gw.dec.state.ny.us
Data Quality Information
Attribute Accuracy Report
All sediment grab samples were positioned using Differential GPS (DGPS), with accuracy within 1 meter. The polygon borders are based on the samples (spaced an average of 0.5 km apart) and the sidescan sonar data. The sediment type polygons represent the general trend, but local misinterpretations are possible.
Logical Consistency Report
No information provided.
Completeness Report
The data cover the Hudson River Estuary from the Verrazano-Narrows Bridge to Troy, with the exception of some areas shallower than 4m, which have not been surveyed and sampled completely.
Lineage
Spatial Data Organization Information
Direct Spatial Reference Method
Vector
Point and Vector Object Information
SDTS Terms Description
SDTS Point and Vector Object Type
Polygon
Point and Vector Object Count
15
Spatial Reference Information
Horizontal Coordinate System Definition
Planar
Grid Coordinate System
Grid Coordinate System Name
Universal Transverse Mercator
Universal Transverse Mercator
UTM Zone Number
18
Transverse Mercator
Scale Factor at Central Meridian
0.999600
Longitude of Central Meridian
-75.000000
Latitude of Projection Origin
0.000000
False Easting
500000.000000
False Northing
0.000000
Planar Coordinate Information
Planar Coordinate Encoding Method
coordinate pair
Coordinate Representation
Abscissa Resolution
0.000512
Ordinate Resolution
0.000512
Planar Distance Units
meters
Geodetic Model
Horizontal Datum Name
North American Datum of 1983
Ellipsoid Name
Geodetic Reference System 80
Semi-major Axis
6378137.000000
Denominator of Flattening Ratio
298.257222
Entity and Attribute Information
Entity Type
Entity Type Label
Sedimentary environment
Entity Type Definition
Region have a particular sedimentary environment, based on interpretation of sidescan sonar, bathymetry, and sub-bottom data.
Entity Type Definition Source
LDEO
Attributes
type
Sedimentary environment type based on interpretation of sidescan sonar, bathymetry, and sub-bottom data
Deposition - thin
Low backscatter; Sub-bottom data shows thin (50 cm) usually transparent layer of sediment accumulation
Deposition - thick
Low backscatter; Sub-bottom data shows thick (50 cm) usually transparent layer of sediment accumulation
Deposition - over bedrock
Low backscatter; Sub-bottom data indicate bedrock underneath thin drape
Deposition - unres. thickness
Low backscatter; Sub-bottom data are not available or not clear enough to identify thickness of layer
Erosional - truncated
Sub-bottom data show indication of truncated stratigraphy outcropping on the river bottom. This class can only be identified where good sub-bottom data are available.
Erosional - bedrock
Multibeam bathymetry and sidescan data show bedrock outcropping at the surface. In general, no sub-bottom penetration.
Erosional - non-deposition
Moderate to high backscatter; multibeam may show smooth or rough surface. Sub-bottom does not show any indication of recent drape or truncated reflections. Applies to areas where there is no clear indication of deposition or other dynamic classes. No 7Be radionuclides where analysis exists.
Dynamic - waves
Regions with waves imaged with multibeam or sidescan
Dynamic - scour
Typically located around obstacles such as bridge abutments. Moderate to high backscatter, rough surface in multibeam bathymetry. No penetration and/or rough surface in sub-bottom data.
Dynamic - debris
Areas of complex morphology that includes small mounds of potential dumps or debris flow deposits. Often these areas show sign of scouring and sediment tails around individual features.
Dynamic - lineation
These are bedforms that are parallel to the current in contrast to the waves/dunes, which are typically aligned perpendicular to the current. Examples of lineations with distinct topographic relief are found in the Highlands.
Dynamic - drift
Regions characterized by deposition in the lee of obstacles. Often scour is also evident along the edges of obstacles so that regions of dynamic drift are characterized by both deposition and erosion.
Dynamic - streaks
Features visible in the backscatter are aligned along the current but have not evident topographic relief. Examples of these features are associated with the Newburg Beacon Bridge (A2).
Dynamic - slump
Features that are found a few times in the interpretation for example the slump structure along the edge of the channel adjacent to Catskill Creek, and the slide off of stony Point.
Unsurveyed
These regions are not classified due to lack of data coverage. These are generally the shallow regions that were not surveyed.
Definition Source
LDEO
AREA
Area in square meters (0 to unbounded)
Definition Source
LDEO
Distribution Information
Format Name
Shapefile
Format Name
metadata
Format Name
HTML metadata
Format Name
KML
Format Name
GeoJSON
Format Name
OGC:WMS
Distributor
Albert R. Mann Library
Online Access
https://cugir-data.s3.amazonaws.com/00/78/85/cugir-007885.zip
Online Access
https://cugir-data.s3.amazonaws.com/00/78/85/fgdc.xml
Online Access
https://cugir-data.s3.amazonaws.com/00/78/85/fgdc.html
Online Access
https://cugir.library.cornell.edu/geoserver/cugir/wfs?version=1.0.0request=GetFeaturetypeName=cugir007885outputFormat=application%2Fvnd.google-earth.kml%2Bxml
Online Access
https://cugir.library.cornell.edu/geoserver/cugir/wfs?version=1.0.0request=GetFeaturetypeName=cugir007885outputFormat=application%2Fjson
Online Access
https://cugir.library.cornell.edu/geoserver/cugir/wms?version=1.1.0request=GetMaplayers=cugir007885bbox=-74.11970117,40.53822539,-73.67233983,42.81646961width=50height=256srs=EPSG:4326format=image/png
Name
Metadata Reference Information
Metadata Date
20210712
Metadata Contact
Contact Information
Contact Organization Primary
Contact Organization
Albert R. Mann Library
Contact Address
Address
Albert R. Mann Library
City
Ithaca
State or Province
New York
Postal Code
14853
Country
USA
Contact Voice Telephone
607-255-5406
Contact Electronic Mail Address
mann-ref@cornell.edu
Metadata Standard Name
FGDC Content Standard for Digital Geospatial Metadata
Metadata Standard Version
FGDC-STD-001-1998
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