Identification_Information: Citation: Citation_Information: Originator: J.A. Messerich Originator: S.P. Schilling Originator: R.A. Thompson Publication_Date: Unknown Publication_Time: Unknown Title: Digital Elevation Models of the Pre-eruption 2000 Crater and 2004-07 Dome-Building Eruption at Mount St. Helens, Washington, USA Geospatial_Data_Presentation_Form: raster digital data Series_Information: Series_Name: Open-File Report Issue_Identification: 2008-1169 Online_Linkage: unknown Description: Abstract: Presented in this report are 27 digital elevation model (DEM) datasets for the crater area of Mount St. Helens. These datasets include pre-eruption baseline data collected in 2000, incremental model subsets collected during the 2004-07 dome building eruption, and associated shaded-relief image datasets. Each dataset was collected photogrammetrically with digital softcopy methods employing a combination of manual collection and iterative compilation of x,y,z coordinate triplets utilizing autocorrelation techniques. DEM data points collected using autocorrelation methods were rigorously edited in stereo and manually corrected to ensure conformity with the ground surface. Data were first collected as a triangulated irregular network (TIN) then interpolated to a grid format. DEM data are based on aerotriangulated photogrammetric solutions for aerial photograph strips flown at a nominal scale of 1:12,000 using a combination of surveyed ground control and photograph-identified control points. The 2000 DEM is based on aerotriangulation of four strips totaling 31 photographs. Subsequent DEMs collected during the course of the eruption are based on aerotriangulation of single aerial photograph strips consisting of between three and seven 1:12,000-scale photographs (two to six stereo pairs). Most datasets were based on three or four stereo pairs. Photogrammetric errors associated with each dataset are presented along with ground control used in the photogrammetric aerotriangulation. The temporal increase in area of deformation in the crater as a result of dome growth, deformation, and translation of glacial ice resulted in continual adoption of new ground control points and abandonment of others during the course of the eruption. Additionally, seasonal snow cover precluded the consistent use of some ground control points. Purpose: The 2000 DEM dataset was collected to assess the state of geomorphic change associated with the post-1980-86 crater of Mount St. Helens and to provide suitable base materials for ongoing geologic mapping efforts supported by the USGS Volcano Hazards Program and National Cooperative Geologic Mapping Program. The 2004-07 DEM datasets were collected as part of the US Geological Survey volcano-monitoring effort at Mount St. Helens. The primary application of the data is for quantitative monitoring of geomorphic and volumetric change associated with dome growth and glacial deformation and derivation of magma extrusion rates. Supplemental_Information: Grid File-Name Date of Aerial Photography/Data generation Bounding Coordinates Min+Max Elev msh00_83 2000_09/25 Bounding_Coordinates: West_Bounding_Coordinate: -122.207030 East_Bounding_Coordinate: -122.167170 North_Bounding_Coordinate: 46.226098 South_Bounding_Coordinate: 46.186042 1361.796264648438 2538.09912109375 msh104_83 2004_10/04 Bounding_Coordinates: West_Bounding_Coordinate: -122.191955 East_Bounding_Coordinate: -122.184085 North_Bounding_Coordinate: 46.199229 South_Bounding_Coordinate: 46.194567 2041.953002929688 2170.23486328125 msh1011_83 2004_10/11 Bounding_Coordinates: West_Bounding_Coordinate: -122.192703 East_Bounding_Coordinate: -122.183438 North_Bounding_Coordinate: 46.199163 South_Bounding_Coordinate: 46.193032 2044.898193359375 2193.838134765625 msh1013_83 2004_10/13 Bounding_Coordinates: West_Bounding_Coordinate: -122.194458 East_Bounding_Coordinate: -122.180574 North_Bounding_Coordinate: 46.200057 South_Bounding_Coordinate: 46.191752 2038.02197265625 2236.358154296875 msh1104_83 2004_11/04 Bounding_Coordinates: West_Bounding_Coordinate: -122.197962 East_Bounding_Coordinate: -122.179793 North_Bounding_Coordinate: 46.200351 South_Bounding_Coordinate: 46.191386 2040.211669921875 2274.862060546875 msh1129_83 2004_11/29 Bounding_Coordinates: West_Bounding_Coordinate: -122.198611 East_Bounding_Coordinate: -122.179412 North_Bounding_Coordinate: 46.199816 South_Bounding_Coordinate: 46.191293 2045.689453125 2328.01513671875 msh1211_83 2004_12/11 Bounding_Coordinates: West_Bounding_Coordinate: -122.197184 East_Bounding_Coordinate: -122.180576 North_Bounding_Coordinate: 46.199986 South_Bounding_Coordinate: 46.191392 2043.270629882813 2282.613525390625 msh13_83 2005_01/03 Bounding_Coordinates: West_Bounding_Coordinate: -122.197314 East_Bounding_Coordinate: -122.180447 North_Bounding_Coordinate: 46.199897 South_Bounding_Coordinate: 46.191391 2051.250244140625 2293.35302734375 msh0201_83 2005_02/01 Bounding_Coordinates: West_Bounding_Coordinate: -122.198350 East_Bounding_Coordinate: -122.179261 North_Bounding_Coordinate: 46.201254 South_Bounding_Coordinate: 46.191383 2017.944946289063 2330.93603515625 msh221_83 2005_02/21 Bounding_Coordinates: West_Bounding_Coordinate: -122.197840 East_Bounding_Coordinate: -122.179760 North_Bounding_Coordinate: 46.202510 South_Bounding_Coordinate: 46.190846 1942.025634765625 2382.571044921875 msh310_83 2005_03/10 Bounding_Coordinates: West_Bounding_Coordinate: -122.199776 East_Bounding_Coordinate: -122.179468 North_Bounding_Coordinate: 46.204774 South_Bounding_Coordinate: 46.191384 1845.2958984375 2341.66943359375 msh419_83 2005_04/19 Bounding_Coordinates: West_Bounding_Coordinate: -122.200170 East_Bounding_Coordinate: -122.179722 North_Bounding_Coordinate: 46.205136 South_Bounding_Coordinate: 46.191026 1853.653686523438 2337.607421875 msh615_83 2005_06/15 Bounding_Coordinates: West_Bounding_Coordinate: -122.199907 East_Bounding_Coordinate: -122.180122 North_Bounding_Coordinate: 46.204325 South_Bounding_Coordinate: 46.191299 1855.05126953125 2334.598876953125 msh714_83 2005_07/14 Bounding_Coordinates: West_Bounding_Coordinate: -122.200037 East_Bounding_Coordinate: -122.179601 North_Bounding_Coordinate: 46.204506 South_Bounding_Coordinate: 46.191205 1850.72265625 2367.6689453125 msh810_83 2005_08/10 Bounding_Coordinates: West_Bounding_Coordinate: -122.199904 East_Bounding_Coordinate: -122.179790 North_Bounding_Coordinate: 46.209274 South_Bounding_Coordinate: 46.191477 1752.289428710938 2346.00634765625 msh91_83. 2005_09/01 Bounding_Coordinates: West_Bounding_Coordinate: -122.200035 East_Bounding_Coordinate: -122.179918 North_Bounding_Coordinate: 46.209365 South_Bounding_Coordinate: 46.191388 1750.270385742188 2321.015380859375 msh920_83. 2005_09/20 Bounding_Coordinates: West_Bounding_Coordinate: -122.199640 East_Bounding_Coordinate: -122.180312 North_Bounding_Coordinate: 46.209002 South_Bounding_Coordinate: 46.191841 1754.135620117188 2319.580322265625 msh1024_83. 2005_10/24 Bounding_Coordinates: West_Bounding_Coordinate: -122.198350 East_Bounding_Coordinate: -122.180176 North_Bounding_Coordinate: 46.209443 South_Bounding_Coordinate: 46.191390 1750.517211914063 2318.580810546875 msh1215_83 2005_12/15 Bounding_Coordinates: West_Bounding_Coordinate: -122.199774 East_Bounding_Coordinate: -122.180047 North_Bounding_Coordinate: 46.209363 South_Bounding_Coordinate: 46.191479 1756.220825195313 2315.929931640625 msh209_83 2006_02/09 Bounding_Coordinates: West_Bounding_Coordinate: -122.199774 East_Bounding_Coordinate: -122.179918 North_Bounding_Coordinate: 46.209363 South_Bounding_Coordinate: 46.191478 1757.210205078125 2313.144287109375 msh418_83 2006_04/18 Bounding_Coordinates: West_Bounding_Coordinate: -122.199384 East_Bounding_Coordinate: -122.180174 North_Bounding_Coordinate: 46.209540 South_Bounding_Coordinate: 46.191570 1757.210205078125 2313.144287109375 msh530_83 2006_05/30 Bounding_Coordinates: West_Bounding_Coordinate: -122.200424 East_Bounding_Coordinate: -122.179917 North_Bounding_Coordinate: 46.209458 South_Bounding_Coordinate: 46.191388 1747.198608398438 2347.607177734375 msh818_83 2006_08/18 Bounding_Coordinates: West_Bounding_Coordinate: -122.200424 East_Bounding_Coordinate: -122.179917 North_Bounding_Coordinate: 46.209458 South_Bounding_Coordinate: 46.191388 1746.66845703125 2368.730224609375 msh1021_83 2006_10/21 Bounding_Coordinates: West_Bounding_Coordinate: -122.200424 East_Bounding_Coordinate: -122.179917 North_Bounding_Coordinate: 46.209458 South_Bounding_Coordinate: 46.191388 1746.500854492188 2349.784912109375 msh126_83 2006_12/06 Bounding_Coordinates: West_Bounding_Coordinate: -122.200424 East_Bounding_Coordinate: -122.179917 North_Bounding_Coordinate: 46.209458 South_Bounding_Coordinate: 46.191388 1749.901489257813 2322.42578125 msh420_83 2007_04/20 Bounding_Coordinates: West_Bounding_Coordinate: -122.200554 East_Bounding_Coordinate: -122.179910 North_Bounding_Coordinate: 46.209909 South_Bounding_Coordinate: 46.191298 1747.15966796875 2307.087158203125 msh705_83. 2007_07/05 Bounding_Coordinates: West_Bounding_Coordinate: -122.200554 East_Bounding_Coordinate: -122.179910 North_Bounding_Coordinate: 46.209909 South_Bounding_Coordinate: 46.191298 1741.110229492188 2311.5654296875 Time_Period_of_Content: Time_Period_Information: Multiple_Dates/Times: Single_Date/Time: Calendar_Date: September 9, 2000 Single_Date/Time: Calendar_Date: October 4, 2004 Single_Date/Time: Calendar_Date: October 11, 2004 Single_Date/Time: Calendar_Date: October 13, 2004 Single_Date/Time: Calendar_Date: November 4, 2004 Single_Date/Time: Calendar_Date: November 29, 2004 Single_Date/Time: Calendar_Date: December 11, 2004 Single_Date/Time: Calendar_Date: January 3, 2005 Single_Date/Time: Calendar_Date: February 1, 2005 Single_Date/Time: Calendar_Date: February 21, 2005 Single_Date/Time: Calendar_Date: March 10, 2005 Single_Date/Time: Calendar_Date: April 19, 2005 Single_Date/Time: Calendar_Date: June 15, 2005 Single_Date/Time: Calendar_Date: July 14, 2005 Single_Date/Time: Calendar_Date: August 10, 2005 Single_Date/Time: Calendar_Date: September 1, 2005 Single_Date/Time: Calendar_Date: September 20, 2005 Single_Date/Time: Calendar_Date: October 24, 2005 Single_Date/Time: Calendar_Date: December 15, 2005 Single_Date/Time: Calendar_Date: February 9, 2006 Single_Date/Time: Calendar_Date: April 18, 2006 Single_Date/Time: Calendar_Date: May 30, 2006 Single_Date/Time: Calendar_Date: August 18, 2006 Single_Date/Time: Calendar_Date: October 21, 2006 Single_Date/Time: Calendar_Date: December 6, 2006 Single_Date/Time: Calendar_Date: April 20, 2007 Single_Date/Time: Calendar_Date: July 5, 2007 Currentness_Reference: DEM datasets are referenced to their respective dates of aerial photography. Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -122.207030 East_Bounding_Coordinate: -122.167170 North_Bounding_Coordinate: 46.226098 South_Bounding_Coordinate: 46.186042 Keywords: Theme: Theme_Keyword_Thesaurus: AGI Glossary of Geology Theme_Keyword: eruption Theme_Keyword: volcano Theme_Keyword: DEM Theme_Keyword: digital elevation model Theme_Keyword: map Theme_Keyword: digital map Theme_Keyword: volume calculation Theme_Keyword: differencing Theme_Keyword: eruption rate Theme_Keyword: glacier Theme_Keyword: glacial deformation Theme_Keyword: computer modeling Theme_Keyword: crater Theme_Keyword: dome building Theme_Keyword: aerotriangulation Theme_Keyword: bridging Theme_Keyword: photogrammetric Theme_Keyword: stereo pairs Theme_Keyword: air photos Theme_Keyword: aerial Theme_Keyword: auto correlation Theme_Keyword: lava dome Theme_Keyword: GIS data Theme_Keyword: mt st helens Theme_Keyword: mount saint helens Theme_Keyword: TIN Theme_Keyword: triangulated irregular network Theme_Keyword: photogrammetry Place: Place_Keyword_Thesaurus: U.S. Board on Geologic Names (BGN) Place_Keyword: mt st helens Place_Keyword: mount saint helens Place_Keyword: Washington Place_Keyword: Crater Glacier Place_Keyword: Cascades Access_Constraints: None Use_Constraints: None -Acknowledgement of Source to the U.S. Geological Survey is requested. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: James A. Messerich Contact_Organization: U.S. Geological Survey Contact_Position: Cartographic Technician Contact_Address: Address_Type: mailing address Address: MS 980 USGS Address: Box 25046 Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225-0046 Country: USA Contact_Voice_Telephone: (303) 236-0914 Contact_Facsimile_Telephone: (303) 236-0214 Contact_Electronic_Mail_Address: jmesser@usgs.gov Data_Set_Credit: USGS Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcInfo 9.2 Data_Quality_Information: Logical_Consistency_Report: All datasets are derived from Photogrammetrically-oriented stereomodels which are scaled to a ground survey using second-order global-positioning satellite (GPS) survey techniques. This survey datum was reduced to UTM projection, zone 10, horizontal datum of NAD83, spheroid of GRS80, and vertical datum of NAVD88. The baseline September 09, 2000 aerotriangulation solution and resulting stereomodels were used as the source for all Photo-Identified control points used for the setup of subsequent aerial photo sets which had either no or limited ground-surveyed locations. Completeness_Report: These data sets are final and complete Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Surveyed ground control locations are assumed to be located to an accuracy of 0.05 to 0.3 Meters Horizontal. Photo-Identified control is assumed to be located to an accuracy of 0.2 to 0.5 Meters Horizontal. DEM locations are accurate to the +/- 0.5 range. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Surveyed ground control locations are assumed to be located to an accuracy of 0.05 to 0.3 Meters Vertical. Photo-Identified control is assumed to be located to an accuracy of 0.2 to 0.5 Meters Vertical. DEM locations are accurate to the +/- 0.5 range. Lineage: Process_Step: Process_Description: Each dataset was collected photogrammetrically using digital softcopy methods utilizing a combination of manually collected and iteratively-compiled x,y,z coordinate triplets using autocorrelation techniques. Aerial Photos were oriented using the British Aerospace (BAE) SocetSet © system using the Multi-Sensor Triangulation © (MST) aerotriangulation software. Aerotriangulated photogrammetric solutions for aerial photograph strips were all flown at a nominal scale of 1:12,000, and scaled using a combination of surveyed ground control and photo-identified control points. The 2000 DEM was based on aerotriangulation of four strips totaling 31 photographs and subsequent DEMs collected during the course of the eruption were based on aerotriangulation of single strips of 1:12,000 consisting of between three and seven photographs (two to six stereo pairs). Most DEM datasets were based on three or four stereo pairs. Photogrammetric errors associated with each dataset are presented along with ground control used in the photogrammetric aerotriangulation (see attached setup accuracy reports). DEM data points which were collected using autocorrelation methods were rigorously edited in stereo and manually corrected to ensure conformity with the ground surface. Other DEM data points were collected entirely manually in stereo. Data was first collected as a triangulated irregular network (TIN) then interpolated to a grid format. Each final Socet Set © DEM data set was translated to an ArcGrid and imported into ESRI Arc-Info © as Arc Grids. Each data set was adjusted, if necessary, to a UTM projection, zone 10, horizontal datum of NAD83, spheroid of GRS80, and vertical datum of NAVD88. Each data set was checked for alignment of grid cells with previous DEMs for comparative purposes and volume calculation. Supplemental shaded-relief image datasets were also constructed. Process_Date: See dates for each data set Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: James A. Messerich Contact_Organization: U.S. Geological Survey Contact_Position: Cartographic Technician Contact_Address: Address_Type: mailing address Address: MS 980 USGS Address: Box 25046 Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225-0046 Country: USA Contact_Voice_Telephone: (303) 236-0914 Contact_Facsimile_Telephone: (303) 236-0214 Contact_Electronic_Mail_Address: jmesser@usgs.gov Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Grid Cell Row_Count: 442 Column_Count: 303 Vertical_Count: 1 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 10 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -123.000000 Latitude_of_Projection_Origin: 0.000000 False_Easting: 500000.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: row and column Coordinate_Representation: Abscissa_Resolution: 10.000000 Ordinate_Resolution: 10.000000 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257222 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: Cell value attributes showing minimum and maximum elevatoins in meters msh00_83 2000_09/25 min 1361.796264648438 max 2538.09912109375 msh104_83 2004_10/04 min 2041.953002929688 max 2170.23486328125 msh1011_83 2004_10/11 min 2044.898193359375 max 2193.838134765625 msh1013_83 2004_10/13 min 2038.02197265625 max 2236.358154296875 msh1104_83 2004_11/04 min 2040.211669921875 max 2274.862060546875 msh1129_83 2004_11/29 min 2045.689453125 max 2328.01513671875 msh1211_83 2004_12/11 min 2043.270629882813 max 2282.613525390625 msh13_83 2005_01/03 min 2051.250244140625 max 2293.35302734375 msh0201_83 2005_02/01 min 017.944946289063 max 2330.93603515625 msh221_83 2005_02/21 min 1942.025634765625 max 2382.571044921875 msh310_83 2005_03/10 min 1845.2958984375 max 2341.66943359375 msh419_83 2005_04/19 min 1853.653686523438 max 2337.607421875 msh615_83 2005_06/15 min 1855.05126953125 max 2334.598876953125 msh714_83 2005_07/14 min 1850.72265625 max 2367.6689453125 msh810_83 2005_08/10 min 1752.289428710938 max 2346.00634765625 msh91_83 2005_09/01 min 1750.270385742188 max 2321.015380859375 msh920_83 2005_09/20 min 1754.135620117188 max 2319.580322265625 msh1024_83 2005_10/24 min 1750.517211914063 max 2318.580810546875 msh1215_83 2005_12/15 min 1756.220825195313 max 2315.929931640625 msh209_83 2006_02/09 min 1757.210205078125 max 2313.144287109375 msh418_83 2006_04/18 min 1757.210205078125 max 2313.144287109375 msh530_83 2006_05/30 min 1747.198608398438 max 2347.607177734375 msh818_83 2006_08/18 min 1746.66845703125 max 2368.730224609375 msh1021_83 2006_10/21 min 1746.500854492188 max 2349.784912109375 msh126_83 2006_12/06 min 1749.901489257813 max 2322.42578125 msh420_83 2007_04/20 min 1747.15966796875 max 2307.087158203125 msh705_83 2007_07/05 min 1741.110229492188 max 2311.5654296875 Distribution_Information: Resource_Description: Downloadable Data Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Transfer_Size: 0.546 Metadata_Reference_Information: Metadata_Date: 2008_04_11 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: James A. Messerich Contact_Organization: U.S. Geological Survey Contact_Position: Cartographic Technician Contact_Address: Address_Type: mailing address Address: MS 980 USGS Address: Box 25046 Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225-0046 Country: USA Contact_Voice_Telephone: (303) 236-0914 Contact_Facsimile_Telephone: (303) 236-0214 Contact_Electronic_Mail_Address: jmesser@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile