hf_aa

Frequently-anticipated questions:

• What does this data set describe?
  1. How should this data set be cited?
  2. What geographic area does the data set cover?
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
  5. What is the general form of this data set?
  6. How does the data set represent geographic features?
  7. How does the data set describe geographic features?
• Who produced the data set?
  1. Who are the originators of the data set?
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
• Why was the data set created?
• How was the data set created?
  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
  3. What similar or related data should the user be aware of?
• How reliable are the data; what problems remain in the data set?
  1. How well have the observations been checked?
  2. How accurate are the geographic locations?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
  5. How consistent are the relationships among the data, including topology?
• How can someone get a copy of the data set?
  1. Are there legal restrictions on access or use of the data?
  2. Who distributes the data?
  3. What's the catalog number I need to order this data set?
  4. What legal disclaimers am I supposed to read?
  5. How can I download or order the data?
• Who wrote the metadata?

What does this data set describe?

1. How should this data set be cited?

   Lienkaemper, James J. , and U.S. Geological Survey, 2006, hf_aa: Data Series xxx, U.S. Geologcial Survey, Reston, VA.

   Online Links:

   • <http://pubs.usgs.gov/ds/xxx>

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -122.354521

   East_Bounding_Coordinate: -121.920797

   North_Bounding_Coordinate: 37.989153

   South_Bounding_Coordinate: 37.496392

3. What does it look like?

4. Does the data set describe conditions during a particular time period?

   Calendar_Date: 2006

   Currentness_Reference: 2006

5. What is the general form of this data set?

   Geospatial_Data_Presentation_Form: vector digital data

6. How does the data set represent geographic features?
   1. How are geographic features stored in the data set?

      This is a Vector data set. It contains the following vector data types (SDTS terminology):

      • Entity point (34)

   2. What coordinate system is used to represent geographic features?

      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.000000. Longitudes are given to the nearest 0.000000. Latitude and longitude values are specified in Decimal degrees.

      The horizontal datum used is North American Datum of 1927.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.400000.
      The flattening of the ellipsoid used is 1/294.978698.
      

7. How does the data set describe geographic features?

   hf_aa

   FID

   Internal feature number. (Source: ESRI)

   Sequential unique whole numbers that are automatically generated.

   Shape

   Feature geometry. (Source: ESRI)

   Coordinates defining the features.

   HF_AA_ID

   HF_KM

   LONGITUDE

   LATITUDE

   SITE

   CITY

   MONTHLY

Who produced the data set?

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • James J. Lienkaemper
   • U.S. Geological Survey

2. Who also contributed to the data set?

3. To whom should users address questions about the data?
   James J. Lienkaemper
   US Geological Survey
   Geophysicist
   

   jlienk@usgs.gov
   

Why was the data set created?

to show where the arrays are located

How was the data set created?

1. From what previous works were the data drawn?

2. How were the data generated, processed, and modified?

   (process 1 of 2)

   Dataset moved.

   Data sources used in this process:

   • C:\maps\ArcInfo\Northern_Calif_Maps\creep_geodesy\alinement_arrays\hf_aa\HF_AA

   (process 2 of 2)

   Dataset copied.

   Data sources used in this process:

   • C:\maps\ArcInfo\Northern_Calif_Maps\fault\Hayward_Fault\MF_2196\hf2004\HF_AA

3. What similar or related data should the user be aware of?

How reliable are the data; what problems remain in the data set?

1. How well have the observations been checked?

2. How accurate are the geographic locations?

   Accurate to within 12 m

3. How accurate are the heights or depths?

4. Where are the gaps in the data? What is missing?

5. How consistent are the relationships among the observations, including topology?

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints: none

Use_Constraints: none

1. Who distributes the data set?[Distributor contact information not provided.]

2. What's the catalog number I need to order this data set?

   Downloadable Data

3. What legal disclaimers am I supposed to read?

4. How can I download or order the data?
   • Availability in digital form:

     Data format:	Size: 0.001

   • Cost to order the data:

Who wrote the metadata?

Dates:

Last modified: 23-Nov-2005

Metadata author:

James J. Lienkaemper
U.S. Geological Survey
Geophysicist
USGS 977
Menlo Park, CA 94025

650 329-5642 (voice)
jlienk@usgs.gov

Metadata standard:

FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

Metadata extensions used:

• <http://www.esri.com/metadata/esriprof80.html>