How to use

　GSI has established more than 1,300 GNSS Continuously Operating Reference Stations (GNSS CORSs) throughout the country. Movement of the land of Japan is daily monitored by GNSS Earth Observation Network System (GEONET).

　In this page, you can see and download 3 kinds of information on crustal movement detected by GEONET.
　Fluctuation Vector---Display movement of the position of GNSS CORSs in vector format.
　Baseline Change---Display the change of baseline length between two GNSS CORSs that you select in time series graphs.
　Coordinate Change---Display the change of coordinates of GNSS CORSs in time series graphs.

If you click the button in this program after you change "subject" menu, each corresponding "How to use" window will be displayed.
  fig. Selection menu of Deformation Information.("subject")
Notice
Observation data might indicate anomalous large value irrelevant to crustal deformation due to bad conditions such as poor reception of GNSS signal. Be sure to check amount of deformation of several GNSS points around the anomalous point before you use these data. Data might not be displayed if an error is too big or no observation data available.

• To change subject, region, period, and scale, select them from the right menu.
• To display a station name and code, put the cursor on the point.
• To display a vector length, click the point.
• To change horizontal or vertical components, select the "DIRECTION" radio button.
  
• To change the vector scale, select "SCALE" menu and choose scale.
  
• To fix other observation station, select "New" in the "FIXED STATION SELECTION" menu.
  
  Then click  button, new displacement vector map will be displayed.
  To display initial vector map , select "Default" and click  button.
• To download numeric files of vector data, click  button.
• To download kml files of vector data, click  button.

• To change subject, district and period, select them from the right menu.
• To select a baseline, click beginning and end point on the map. Selected baselines are added in the list box.
• To display baseline variation graph, click  button, after you select baseline.(New window will be opened)
• To cancel a selected baseline in the list box, select the baseline and click  button.
• To cancel a selected point on the map, click  button.
• To display a station name and code, put the cursor on the point.
• To display a graph for other baselines, select one from the above pull-down menu.
• To download numeric file of baseline variation graph, click  button.
• To download numeric files of all of baseline variation graphs, click   button.

• To change subject, district and period, select them from the right menu.
• To display a station name and code, put the cursor on the point.
• To add an observation point, click the point on the map. (Selection is possible up to 5 points)
• To display coordinates change graph, click  button, after you select observation points. (New window will be opened)
• To cancel a selected point in the list box, select the station name in the "Output Observation Stations" box and click  button.
• To cancel a selected point on the map, click  button.
• To display a graph for other points, select one from the above pull-down menu.
• To download numeric file of coordinates change graph, click  button.
• To download numeric files of all of coordinates change graphs, click  button.