2015 USGS-MDEQ Lidar: Coastal Mississippi QL2
OCM Partners
Data Set
(DS)
| ID: 49828
| Published / External
Created: 2017-11-15
|
Last Modified: 2022-08-09
Project (PRJ) | ID: 49401
ID: 49828
Data Set (DS)
* Discovery• First Pass
» Metadata Rubric
Item Identification
* » Title | 2015 USGS-MDEQ Lidar: Coastal Mississippi QL2 |
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Short Name | ms2015_usgs-mdeq_ms_coastal_ql2_m5168_metadata |
* Status | Completed |
Creation Date | |
Revision Date | |
• 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 |
Other Citation Details | |
• 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 |
DOI (Digital Object Identifier) | |
DOI Registration Authority | |
DOI Issue Date |
Keywords
Theme Keywords
Thesaurus | Keyword |
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ISO 19115 Topic Category | elevation |
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* Spatial Keywords
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Platform Keywords
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Physical Location
• » Organization | Office for Coastal Management |
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• » City | Charleston |
• » State/Province | SC |
• Country | |
• » Location Description |
Data Set Information
* Data Set Scope Code | Data Set |
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• Data Set Type | |
• Maintenance Frequency | As Needed |
Maintenance Note | |
» 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 |
Entity Attribute Detail URL | |
Distribution Liability |
Any conclusions drawn from the analysis of this information are not the responsibility of USGS, MDEQ, Woolpert, NOAA, or their partners. |
Data Set Credit |
Support Roles
* » Support Role | Data Steward |
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* » Date Effective From | 2017-04-15 |
Date Effective To | |
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 |
Fax | |
Mobile | |
URL | https://coast.noaa.gov |
Business Hours | |
Contact Instructions |
* » Support Role | Distributor |
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* » Date Effective From | 2017-04-15 |
Date Effective To | |
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 |
Fax | |
Mobile | |
URL | https://coast.noaa.gov |
Business Hours | |
Contact Instructions |
* » Support Role | Metadata Contact |
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* » Date Effective From | 2017-04-15 |
Date Effective To | |
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 |
Fax | |
Mobile | |
URL | https://coast.noaa.gov |
Business Hours | |
Contact Instructions |
* » Support Role | Point of Contact |
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* » Date Effective From | 2017-04-15 |
Date Effective To | |
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 |
Fax | |
Mobile | |
URL | https://coast.noaa.gov |
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* Contact Instructions |
Extents
Currentness Reference | Ground Condition |
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Extent Group 1
Extent Description |
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Extent Group 1 / Geographic Area 1
* » W° Bound | -89.853305 |
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* » E° Bound | -88.390953 |
* » N° Bound | 31.016904 |
* » S° Bound | 30.173904 |
* » Description |
Extent Group 1 / Vertical Extent
EPSG Code | |
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Vertical Minimum | |
Vertical Maximum |
Extent Group 1 / Time Frame 1
* » Time Frame Type | Range |
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* » Start | 2015-01-28 |
End | 2015-03-28 |
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Description |
Spatial Information
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Spatial Representation
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Vector Representation Used? | Yes |
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Reference Systems
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Access Information
* » Security Class | Unclassified |
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* Security Classification System | |
Security Handling Description | |
• Data Access Policy | |
» 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. |
Metadata Access Constraints | |
Metadata Use Constraints |
Distribution Information
Start Date | |
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» 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. |
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Start Date | |
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» 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. |
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URLs
URL | https://coast.noaa.gov/dataviewer |
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URL Type | Online Resource |
File Resource Format | |
Description |
URL | https://coast.noaa.gov |
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Name | |
URL Type | Online Resource |
File Resource Format | |
Description |
URL | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/5168/supplemental/ms2015_usgs_mdeq_coastal_m5168.kmz |
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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. |
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Activity Log
Activity Time | 2017-08-23 |
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Responsible Party | |
Description |
Date that the source FGDC record was last modified. |
Activity Time | 2017-11-14 |
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Activity Type | |
Responsible Party | |
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 Time | 2018-02-08 |
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Responsible Party | |
Description |
Partial upload of Positional Accuracy fields only. |
Activity Time | 2018-03-13 |
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Description |
Partial upload to move data access links to Distribution Info. |
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Issues
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Technical Environment
Description |
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Data Quality
Representativeness | |
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Accuracy | |
Analytical Accuracy | |
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. |
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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. |
» Quality Control Procedures Employed |
Data Management
» Have Resources for Management of these Data Been Identified? | |
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» Do these Data Comply with the Data Access Directive? | |
» Is Access to the Data Limited Based on an Approved Waiver? | |
» If Distributor (Data Hosting Service) is Needed, Please Indicate | |
» Approximate Delay Between Data Collection and Dissemination | |
» If Delay is Longer than Latency of Automated Processing, Indicate Under What Authority Data Access is Delayed |
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» Actual or Planned Long-Term Data Archive Location | |
» If World Data Center or Other, Specify | |
» If To Be Determined, Unable to Archive, or No Archiving Intended, Explain |
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» Approximate Delay Between Data Collection and Archiving | |
» How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive? |
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Lineage
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Sources
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Process Steps
Process Step Number | 1 |
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» 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 |
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Source |
Process Step Number | 2 |
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» 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 |
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Process Step Number | 3 |
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» 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 |
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Acquisition Information
Instruments
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FAQs
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Child Items
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Related Items
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Catalog Details
Catalog Item ID | 49828 |
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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 Workflow State | Published / External |
Metadata Last Review Date | 2022-03-16 |
Metadata Review Frequency | 1 Year |
Metadata Next Review Date | 2023-03-16 |
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