2006 U.S. Geological Survey Topographic LiDAR: Alameda County
OCM Partners
Data Set
(DS)
| ID: 49637
| Published / External
Created: 2017-11-15
|
Last Modified: 2022-08-09
Project (PRJ) | ID: 49401
ID: 49637
Data Set (DS)
* Discovery• First Pass
» Metadata Rubric
Item Identification
* » Title | 2006 U.S. Geological Survey Topographic LiDAR: Alameda County |
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Short Name | ca2006_usgs_alameda_m1474_metadata |
* Status | Completed |
Creation Date | |
Revision Date | |
• Publication Date | 2013-03 |
* » Abstract |
The Light Detection and Ranging (LiDAR) data set is a survey of Alameda County in Northern California. The entire survey covers approximately 868.382 square miles. The Nominal Point Density of this dataset is approximately 1.66 meters for unobscured areas. The LiDAR discrete-return point cloud data were originally available in the American Society for Photogrammetry and Remote Sensing (ASPRS) LAS V1.2 format. The data classifications available from the NOAA Data Access Viewer (DAV) are: 1 - Unclassified 2 - Ground 7 - Low point (Noise) 10 - Overlap Original contact information: Contact Org: U.S. Geological Survey Earth Resources Observation and Science (EROS) Center Title: Long Term Archive (LTA) Representative Phone: Unknown Email: lta@usgs.gov |
* Purpose |
High-resolution digital elevation maps generated by airborne and stationary LiDAR have led to significant advances in geomorphology, the branch of geoscience concerned with the origin and evolution of Earth's surface topography. LiDAR provides unique characteristics relative to other remotely sensed data sources by providing three-dimensional feature information that cannot be derived from traditional imaging sensors. |
Notes |
10281 |
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/geoid18/1474/supplemental/ca2006_usgs_alameda_footprint.kmz |
DOI (Digital Object Identifier) | |
DOI Registration Authority | |
DOI Issue Date |
Keywords
Theme Keywords
Thesaurus | Keyword |
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ISO 19115 Topic Category | elevation |
None | point cloud |
Temporal Keywords
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* Spatial Keywords
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Stratum 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 LAS 1.2 format |
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 Sanborn, USGS, NOAA, the Office for Coastal Management or its partners. |
Data Set Credit | U.S. Geological Survey |
Support Roles
* » Support Role | Data Steward |
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* » Date Effective From | 2013-03 |
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 | 2013-03 |
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 | 2013-03 |
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 | 2013-03 |
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 |
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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 | -122.361368 |
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* » E° Bound | -121.463828 |
* » N° Bound | 37.9138 |
* » S° Bound | 37.445799 |
* » 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 | 2006-06-25 |
End | 2006-07-02 |
Alternate Start As Of Info | |
Alternate End As Of Info | |
Description |
Spatial Information
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Spatial Representation
Grid Representation Used? | |
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Vector Representation Used? | Yes |
Text / Table Representation Used? | |
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Video Representation Used? |
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Reference Systems
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Access Information
Data License | |
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Data License URL | |
Data License Statement | |
* » Security Class | Unclassified |
* 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=1474 ; |
• » 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=1474 |
Distributor | |
File Name | Customized Download |
Description |
Create custom data files by choosing data area, product type, map projection, file format, datum, etc. |
File Date/Time | |
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Review Status |
Start Date | |
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» Download URL | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/1474/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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Name | |
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/geoid18/1474/supplemental/ca2006_usgs_alameda_footprint.kmz |
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Name | Browse Graphic |
URL Type | Browse Graphic |
File Resource Format | kmz |
Description |
This graphic shows the lidar coverage for Alameda County, California. |
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Activity Log
Activity Time | 2016-05-23 |
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Activity Type | |
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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Activity Type | |
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 |
The identification of features is provided by the distinct electromagnetic energy it emits,reflects, or otherwise transmits. This is called the spectral signature. Other signatures such as tone (lightness or darkness), texture (surface roughness or smoothness), pattern,shadow, shape, and size are as important. Thus, through the use of the thematic mapper sensor, such elements as water features, soils, and vegetation can be identified and distinguished from each other. |
Analytical Accuracy | |
Horizontal Positional Accuracy | |
Vertical Positional Accuracy |
No information about the vertical accuracy was given with the original metadata. This value is assumed based on FEMA lidar specifications concerning vertical accuracy.; Quantitative Value: 0.30 meters, Test that produced the value: Accuracyz = RMSEz X 1.9600 at the 95% confidence level (meters). |
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Completeness Report |
The lidar collection has been acquired by the USGS through contracts, partnerships with other Federal, state, tribal, or regional agencies, from direct purchases from private industry vendors, and through volunteer contributions from the science community. While USGS makes every effort to provide accurate and complete information, USGS provides no warranty, expressed or implied, as to the accuracy, reliability or completeness of furnished lidar point clouds. Please note that USGS does not control and cannot guarantee the relevance, timeliness, or accuracy of these outside materials. |
Conceptual Consistency |
All data formatted by OCM validated using commercial GIS software to ensure proper formatting and loading. |
» 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 |
The NOAA Office for Coastal Management (OCM) received topographic files in LAS format. The files contained lidar elevation and intensity measurements. The data were received in projected California State Plane Zone 0403 coordinates and were vertically referenced to NAVD88. The vertical units of the data were feet. OCM performed the following processing for data storage and Digital Coast provisioning purposes: 1. High Noise (bad elevations) were removed from tiles 29J and 30J. All elevations greater than 1000 feet were removed. 2. Horizontally the data was converted from projected California State Place Zone 0403 coordinates (feet) to geographic NAD83 coordinates (decimal degrees) 3. Vertically the data was converted from orthometric NAVD88 heights (feet) to ellipsoidal NAD83 (meters) using GEOID03 (assumed) |
Process Date/Time | 2013-03-01 00:00:00 |
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Acquisition Information
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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 | 49637 |
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Metadata Record Created By | Anne Ball |
Metadata Record Created | 2017-11-15 15:21+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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