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OCM Partners Metadata Library > Lidar - partner (no harvest) >

2012 USACE Topobathy Lidar: Post Sandy (NJ & NY)

Data Set (DS)  |  OCM Partners (OCMP)
GUID: gov.noaa.nmfs.inport:50096  |  Updated: August 9, 2022  |  Published / External 
Summary
Item Identification
Keywords
Physical Location
Data Set Info
Support Roles
Extents
Spatial Info
Access Info
Distribution Info
URLs
Activity Log
Tech Environment
Data Quality
Lineage
Related Items
Catalog Details

Summary

Browse Graphic

Short Citation
OCM Partners, 2024: 2012 USACE Topobathy Lidar: Post Sandy (NJ & NY), https://www.fisheries.noaa.gov/inport/item/50096.
Full Citation Examples

Abstract

These files contain classified topographic and bathymetric lidar data as unclassified valid topographic data (1) and valid

topographic data classified as ground (2), Classes 1 and 2 are defined in accordance with the American Society for

Photogrammetry and Remote Sensing (ASPRS) classification standards. The data were collected on November 16, 2012 and cover

portions of the following counties:

New Jersey - Bergen, Essex, Hudson, Middlesex, Monmouth, Ocean, Union

New York - Bronx, Kings, Nassau, New York, Queens, Richmond, Suffolk, Westchester

These data were collected by the Coastal Zone Mapping and Imaging Lidar (CZMIL) system. CZMIL integrates a lidar sensor with

topographic and bathymetric capabilities, a digital camera and a hyperspectral imager on a single remote sensing platform

for use in coastal mapping and charting activities. Native lidar data is not generally in a format accessible to most Geographic

Information Systems (GIS). Specialized in-house and commercial software packages are used to process the native lidar data

into 3-dimensional positions that can be imported into GIS software for visualization and further analysis. Horizontal positions,

provided in decimal degrees of latitude and longitude, are referenced to the North American Datum of 1983 (NAD83). Vertical

positions are referenced to the NAD83 ellipsoid and provided in meters. The National Geodetic Survey's (NGS) GEOID12A model

is used to transform the vertical positions from ellipsoid to orthometric heights referenced to the North American Vertical

Datum of 1988 (NAVD88).

For data storage and Digital Coast provisioning purposes, the NOAA Office for Coastal Management converted

the data from orthometric heights referenced to the North American Vertical Datum of 1988 (NAVD88) to ellipsoid heights using

the NGS GEOID12A model.

Original contact information:

Contact Org: JALBTCX

Title: Data Production Manager

Phone: 228-252-1121

Email: JALBTCX@usace.army.mil

Distribution Information

  • Create custom data files by choosing data area, product type, map projection, file format, datum, etc.

  • Simple download of data files.

Access Constraints:

None

Use Constraints:

Users should be aware that temporal changes may have occurred since this data set was collected and some parts of

this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a

full awareness of its limitations. These data depict the heights at the time of the survey and are only accurate for that time.

Controlled Theme Keywords

elevation

Child Items

No Child Items for this record.

Contact Information

Point of Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202

Metadata Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202

Extents

Geographic Area 1

-74.506526° W, -73.172868° E, 41.009632° N, 40.022907° S

Time Frame 1
2012-11-16

Item Identification

Title: 2012 USACE Topobathy Lidar: Post Sandy (NJ & NY)
Short Name: usace2012_postsandy_nj_ny_m2478_metadata
Status: Completed
Publication Date: 2013-05
Abstract:

These files contain classified topographic and bathymetric lidar data as unclassified valid topographic data (1) and valid

topographic data classified as ground (2), Classes 1 and 2 are defined in accordance with the American Society for

Photogrammetry and Remote Sensing (ASPRS) classification standards. The data were collected on November 16, 2012 and cover

portions of the following counties:

New Jersey - Bergen, Essex, Hudson, Middlesex, Monmouth, Ocean, Union

New York - Bronx, Kings, Nassau, New York, Queens, Richmond, Suffolk, Westchester

These data were collected by the Coastal Zone Mapping and Imaging Lidar (CZMIL) system. CZMIL integrates a lidar sensor with

topographic and bathymetric capabilities, a digital camera and a hyperspectral imager on a single remote sensing platform

for use in coastal mapping and charting activities. Native lidar data is not generally in a format accessible to most Geographic

Information Systems (GIS). Specialized in-house and commercial software packages are used to process the native lidar data

into 3-dimensional positions that can be imported into GIS software for visualization and further analysis. Horizontal positions,

provided in decimal degrees of latitude and longitude, are referenced to the North American Datum of 1983 (NAD83). Vertical

positions are referenced to the NAD83 ellipsoid and provided in meters. The National Geodetic Survey's (NGS) GEOID12A model

is used to transform the vertical positions from ellipsoid to orthometric heights referenced to the North American Vertical

Datum of 1988 (NAVD88).

For data storage and Digital Coast provisioning purposes, the NOAA Office for Coastal Management converted

the data from orthometric heights referenced to the North American Vertical Datum of 1988 (NAVD88) to ellipsoid heights using

the NGS GEOID12A model.

Original contact information:

Contact Org: JALBTCX

Title: Data Production Manager

Phone: 228-252-1121

Email: JALBTCX@usace.army.mil
Purpose:

These data were collected as a part of the Post Sandy effort to depict the elevations above and below the water in the

NY coastal zone.
Notes:

10740
Supplemental Information:

In areas of dense vegetation the points classified as ground might be incorrectly classified due to the inability of the laser to

penetrate the canopy and reach the bare ground.

A footprint of this data set may be viewed in Google Earth at:

https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2478/supplemental/2012_USACE_Post_Sandy_TopoBathy_Lidar_New_Jersey_and_New_York.kmz

Keywords

Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category
elevation
UNCONTROLLED
None IWG-OCM
None Light Detection and Ranging
None National Coastal Mapping Program (NCMP)
None U.S. Army Corps of Engineers (USACE)

Temporal Keywords

Thesaurus Keyword
UNCONTROLLED
None 2012
None November

Physical Location

Organization: Office for Coastal Management
City: Charleston
State/Province: SC

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: As Needed
Distribution Liability:

Any conclusions drawn from the analysis of this information are not the responsibility of USACE,

JALBTCX, the Office for Coastal Management or its partners.
Data Set Credit: Acknowledgement of US Army Corps of Engineers (USACE) Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX) would be appreciated in products derived from these data.

Support Roles

Data Steward

CC ID: 690270
Date Effective From: 2013-05
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Distributor

CC ID: 690272
Date Effective From: 2013-05
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Metadata Contact

CC ID: 690273
Date Effective From: 2013-05
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Point of Contact

CC ID: 690271
Date Effective From: 2013-05
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Extents

Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 1133870
W° Bound: -74.506526
E° Bound: -73.172868
N° Bound: 41.009632
S° Bound: 40.022907

Extent Group 1 / Time Frame 1

CC ID: 1133869
Time Frame Type: Discrete
Start: 2012-11-16

Spatial Information

Spatial Representation

Representations Used

Vector: Yes

Access Information

Security Class: Unclassified
Data Access Procedure:

This data can be obtained on-line at the following URL:

https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=2478

;
Data Access Constraints:

None
Data Use Constraints:

Users should be aware that temporal changes may have occurred since this data set was collected and some parts of

this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a

full awareness of its limitations. These data depict the heights at the time of the survey and are only accurate for that time.

Distribution Information

Distribution 1

CC ID: 743007
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=2478
Distributor:
File Name: Customized Download
Description:

Create custom data files by choosing data area, product type, map projection, file format, datum, etc.

Distribution 2

CC ID: 743008
Download URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2478/index.html
Distributor:
File Name: Bulk Download
Description:

Simple download of data files.

URLs

URL 1

CC ID: 743010
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2478/supplemental/2012_USACE_Post_Sandy_TopoBathy_Lidar_New_Jersey_and_New_York.kmz
Name: Browse Graphic
URL Type:
Browse Graphic
File Resource Format: kmz
Description:

This file shows the coverage of this data in New Jersey and New York.

Activity Log

Activity Log 1

CC ID: 690313
Activity Date/Time: 2016-05-23
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 690312
Activity Date/Time: 2017-11-14
Description:

Converted from FGDC Content Standards for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details.

Activity Log 3

CC ID: 718700
Activity Date/Time: 2018-02-08
Description:

Partial upload of Positional Accuracy fields only.

Activity Log 4

CC ID: 743009
Activity Date/Time: 2018-03-13
Description:

Partial upload to move data access links to Distribution Info.

Technical Environment

Description:

Microsoft Windows 2000 Version 5.2 (Build 3790) Service Pack 2; ESRI ArcCatalog 9.3.0.1770

Data Quality

Accuracy:

These data are not attributed. | Quantitative Value: N/A | Quantitative Test Explanation: These data are not attributed.
Horizontal Positional Accuracy:

The data positions were obtained using post processed KGPS methods. The horizontal accuracy of the data is better

than plus or minus 0.75 m.

; Quantitative Value: 0.75 meters, Test that produced the value: RMSE 95% Conf.
Vertical Positional Accuracy:

The data positions were obtained using post processed KGPS methods. The vertical

accuracy of the data is 0.125 m RMSE.

; Quantitative Value: 0.125 meters, Test that produced the value: RMSE 95% Conf.
Completeness Measure:

Cloud Cover: Unknown
Completeness Report:

This data set covers the spatial extent of bathymetric and topographic lidar data obtained during this survey.
Conceptual Consistency:

Differences between a DEM created from the lidar data representing bare ground and the ground truth

data is unbiased and measures 0.0396 m RMSE.

Lineage

Process Steps

Process Step 1

CC ID: 1133865
Description:

These data were collected using the CZMIL system. It is owned and operated by the U.S. Army Corps of Engineers (USACE). The

system collects lidar data at 10 kHz and RGB imagery at 2 Hz. A CASI-1500 hyperspectral line scanner is integrated with the

system as well. Aircraft position, velocity and acceleration information are collected through a combination of Novatel and

POS A/V 510 equipment. All raw data streams are transferred to the office for downloading and processing in CZMILs Hydro

Fusion software. Aircraft position data are processed using POSPac software and the results are combined with the lidar

data to produce 3-D positions for each lidar shot. Upon inspection and QA/QC in the software packages Fledermaus and PFM_ABE,

anomalous data are flagged as invalid. NOAAs VDatum software then converts all valid data from ellipsoid to orthometric heights

based on the NGS' GEOID12A model and exports valid lidar data as a series of unclassified ascii xyz files.
Process Date/Time: 2012-12-23 00:00:00

Process Step 2

CC ID: 1133866
Description:

The flightline LAS files are imported into GeoCue [V2012], which is a geospatial workflow production and management software

tool employed by JALBTCX to perform and monitor production of data products. Upon import into GeoCue, the flightline LAS files

are divided into a series of boxes, each of which are 1500 meters in length and width. A customized classification macro,

built upon the TerraScan [V12] module within Microstation V8i, classifies valid topographic data as ground points (2) and

unclassified points (1). Upon completion the macro, the classification results undergo quality control and any misclassified

points are manually edited. In areas of dense vegetation the bare earth ground points might be incorrectly classified due to

the inability of the laser to penetrate the canopy and reach the bare ground. In these areas, JALBTCX defaults to the

algorithms ground surface instead of manually reclassifying those points. The final classification results are comprised of

individual lidar points with classifications of ground (2) or unclassified (1). They are partitioned into a series of

USGS quarter quad delivery boxes, one Classified LAS file per box. The format of the file is LAS version [1.2]. Data are

classified as 1 (valid non-ground topographic data), 2 (valid ground topographic data).

Process Step 3

CC ID: 1133867
Description:

The NOAA Office for Coastal Management (OCM) received the files in LAS v1.2 format. The files contained lidar

elevation and intensity measurements. The data were received in geographic coordinates (NAD83) and vertically referenced to

NAVD88 using the Geoid12A model. The vertical units were meters. The data were classified according to ASPRS LAS

classification scheme (1 = unclassified, 2 = ground). OCM performed the following processing for data storage and

Digital Coast provisioning purposes:

1. The las files were converted from orthometric (NAVD88) heights to ellipsoidal heights using Geoid12A.
Process Date/Time: 2013-04-01 00:00:00

Related Items

Item Type Relationship Type Title
Data Set (DS) Cross Reference 2012 USACE Topobathy Lidar DEM: Post Sandy (NJ & NY)

DEM derived from this point cloud.

Catalog Details

Catalog Item ID: 50096
GUID: gov.noaa.nmfs.inport:50096
Metadata Record Created By: Anne Ball
Metadata Record Created: 2017-11-15 15:24+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2022-08-09 17:11+0000
Metadata Record Published: 2022-03-16
Owner Org: OCMP
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2022-03-16
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2023-03-16