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Physical Location
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Spatial Info
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Catalog Details

Summary

Browse Graphic

Short Citation
OCM Partners, 2024: 2015 USGS-MDEQ Lidar: Coastal Mississippi QL2, https://www.fisheries.noaa.gov/inport/item/49828.
Full Citation Examples

Abstract

This task is issued under USGS Contract No. G10PC00057, Task Order No. G15PD00091. This task order requires lidar data to be acquired over approximately 5981 square miles. The lidar was collected and processed to meet a maximum Nominal Post Spacing (NPS) of 0.7 meter. The NPS assessment is made against single swath, first return data located within the geometrically usable center portion (typically ~90%) of each swath.

The data was collected using a Leica ALS70 500 kHz Multiple Pulses in Air (MPiA) lidar sensor and a Chiroptera II sensor.

The ALS70 sensor collects up to four returns per pulse, as well as intensity data, for the first three returns. If a fourth return was captured, the system does not record an associated intensity value.

The Chiroptera II sensor provides 35 kHz bathymetric data and up to 500 kHz topographic data. The system acquires bathymetric lidar, topographic lidar and 4-band 80 MP digital camera imagery simultaneously. For this project, the flight parameters were used to provide 100% coverage. Two multiple pulse in air zones were used.

The Coastal delivery was processed and projected in Mississippi State Plane East Zone, NAD83(2011). The vertical datum used for the task order was referenced to NAVD88, GEOID12A/12B in units of US Survey Feet. These data were converted to geographic coordinates with elevation in meters above the ellipsoid for ingest into the NOAA Digital Coast. Further projection and datum processing may have occurred (see process descriptions).

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be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions.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

-89.853305° W, -88.390953° E, 31.016904° N, 30.173904° S

Time Frame 1
2015-01-28 - 2015-03-28

Item Identification

Title: 2015 USGS-MDEQ Lidar: Coastal Mississippi QL2
Short Name: ms2015_usgs-mdeq_ms_coastal_ql2_m5168_metadata
Status: Completed
Publication Date: 2017-04-15
Abstract:

This task is issued under USGS Contract No. G10PC00057, Task Order No. G15PD00091. This task order requires lidar data to be acquired over approximately 5981 square miles. The lidar was collected and processed to meet a maximum Nominal Post Spacing (NPS) of 0.7 meter. The NPS assessment is made against single swath, first return data located within the geometrically usable center portion (typically ~90%) of each swath.

The data was collected using a Leica ALS70 500 kHz Multiple Pulses in Air (MPiA) lidar sensor and a Chiroptera II sensor.

The ALS70 sensor collects up to four returns per pulse, as well as intensity data, for the first three returns. If a fourth return was captured, the system does not record an associated intensity value.

The Chiroptera II sensor provides 35 kHz bathymetric data and up to 500 kHz topographic data. The system acquires bathymetric lidar, topographic lidar and 4-band 80 MP digital camera imagery simultaneously. For this project, the flight parameters were used to provide 100% coverage. Two multiple pulse in air zones were used.

The Coastal delivery was processed and projected in Mississippi State Plane East Zone, NAD83(2011). The vertical datum used for the task order was referenced to NAVD88, GEOID12A/12B in units of US Survey Feet. These data were converted to geographic coordinates with elevation in meters above the ellipsoid for ingest into the NOAA Digital Coast. Further projection and datum processing may have occurred (see process descriptions).

Purpose:

Provide current elevation data in Coastal Mississippi.

Notes:

10472

Supplemental Information:

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

https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/5168/supplemental/

Lidar report for this data set is available here:

https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/5168/supplemental/Mississippi_Coastal_QL2_Lidar_with_3DEP_Extension_Lidar_Report.pdf

Keywords

Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category
elevation

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
Data Presentation Form: las
Entity Attribute Overview:

Lidar points in LAZ format (Classes 1,2,7,9,10,17,18)

Entity Attribute Detail Citation:

none

Distribution Liability:

Any conclusions drawn from the analysis of this information are not the responsibility of USGS, MDEQ, Woolpert, NOAA, or their partners.

Support Roles

Data Steward

CC ID: 679110
Date Effective From: 2017-04-15
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: 679112
Date Effective From: 2017-04-15
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: 679113
Date Effective From: 2017-04-15
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: 679111
Date Effective From: 2017-04-15
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: 1138331
W° Bound: -89.853305
E° Bound: -88.390953
N° Bound: 31.016904
S° Bound: 30.173904

Extent Group 1 / Time Frame 1

CC ID: 1138330
Time Frame Type: Range
Start: 2015-01-28
End: 2015-03-28

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=5168;

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: 741574
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=5168
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: 741575
Download URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/5168/index.html
Distributor:
File Name: Bulk Download
Description:

Simple download of data files.

URLs

URL 1

CC ID: 741577
URL: https://coast.noaa.gov/dataviewer
URL Type:
Online Resource

URL 2

CC ID: 741578
URL: https://coast.noaa.gov
URL Type:
Online Resource

URL 3

CC ID: 741579
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/5168/supplemental/ms2015_usgs_mdeq_coastal_m5168.kmz
Name: Browse Graphic
URL Type:
Browse Graphic
File Resource Format: kmz
Description:

This graphic shows the coverage of the 2015 lidar QL2 project Coastal Mississippi.

Activity Log

Activity Log 1

CC ID: 679138
Activity Date/Time: 2017-08-23
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 679137
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: 718400
Activity Date/Time: 2018-02-08
Description:

Partial upload of Positional Accuracy fields only.

Activity Log 4

CC ID: 741576
Activity Date/Time: 2018-03-13
Description:

Partial upload to move data access links to Distribution Info.

Data Quality

Horizontal Positional Accuracy:

None reported; Quantitative Value: 1 meters, Test that produced the value: Explicit horizontal accuracy is not reported in the accuracy report provided. Assumptions of 1 meter.

Vertical Positional Accuracy:

The vertical accuracy statistics were calculated by comparison of the lidar bare earth points to the ground surveyed QA/QC points. Mississippi Coastal QL2 Lidar was processed and delivered in NAD1983(2011) Mississippi State Plane East, NAVD88 Geoid12A meters.; Quantitative Value: 0.166 meters, Test that produced the value: LAS Swath Fundamental Vertical Accuracy (FVA) Tested 0.166 meters fundamental vertical accuracy at a 95 percent confidence level, derived according to NSSDA, in open terrain using (RMSEz) x 1.96000 Tested against the TIN using independent check points.

Completeness Report:

The LiDAR data is visually inspected for completeness to ensure that are no gaps between flight lines.

Conceptual Consistency:

All formatted data are validated using commercial GIS software to ensure proper formatting and loading prior to delivery.

Lineage

Process Steps

Process Step 1

CC ID: 1138326
Description:

All airborne GNSS and IMU data was post-processed and quality controlled using Applanix MMS software. GNSS data was processed at a 1 and 2 Hz data capture rate and the IMU data was processed at 200 Hz.

Position and orientation data were acquired in the aircraft using a NovAtel SPAN with LCI-100C IMU. All data were post-processed using NovAtel Inertial Explorer software to provide a tightly-coupled kinematic position and orientation solution.

Process Date/Time: 2015-01-01 00:00:00

Process Step 2

CC ID: 1138327
Description:

When the sensor calibration, data acquisition, and GPS processing phases were complete, the formal data reduction processes by Woolpert lidar specialists included:

- Processed individual flight lines to derive a raw "Point Cloud" LAS file. Matched overlapping flight lines, generated statistics for evaluation comparisons, and made the necessary adjustments to remove any residual systematic error.

- Calibrated LAS files were imported into the task order tiles and initially filtered to create a ground and non-ground class. Then additional classes were filtered as necessary to meet client specified classes.

- Once all project data was imported and classified, survey ground control data was imported and calculated for an accuracy assessment. As a QC measure, Woolpert has developed a routine to generate accuracy statistical reports by comparisons against the TIN and the DEM using surveyed ground control of higher accuracy. The lidar is adjusted accordingly to meet or exceed the vertical accuracy requirements.

- The lidar tiles were reviewed using a series of proprietary QA/QC procedures to ensure it fulfills the task order requirements. A portion of this requires a manual step to ensure anomalies have been removed from the ground class.

- The lidar LAS files are classified into the Default (Class 1), Ground (Class 2), Low Noise (Class 7), Water (Class 9), Ignored Ground (Class 10), Bridge Decks (Class 17) and High Noise (Class 18) classifications.

- FGDC Compliant metadata was developed for the task order in .xml format for the final data products.

- The horizontal datum used for Coastal delivery was referenced to Mississippi State Plane East Zone, NAD83(2011). The vertical datum used for the task order was referenced to NAVD88, GEOID12A/12B in units of US Survey Feet.

Process Date/Time: 2015-01-01 00:00:00

Process Step 3

CC ID: 1138328
Description:

The NOAA Office for Coastal Management received the LAS files in from Mississippi DEQ. The data was received in Mississippi State Plane East (zone 2301) horizontal coordinates in US survey feet with vertical coordinates referenced to NAVD88 (Geoid12a) in feet. The Digital Coast performed the following processing for data storage and Digital Coast provisioning purposes:

1. Data were reprojected to geographic NAD83(2011) coordinates in decimal degrees.

2. The vertical coordinates were transformed to ellipsoidal heights in meters using Geoid12a.

Process Date/Time: 2017-04-01 00:00:00

Catalog Details

Catalog Item ID: 49828
GUID: gov.noaa.nmfs.inport:49828
Metadata Record Created By: Anne Ball
Metadata Record Created: 2017-11-15 15:22+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