Vase is a Java-based client application designed for viewing and extracting
seismic waveforms from the DHI
Vase is platform independent. When you download the application, Install
Anywhere will install all
the files as needed
for your platform. No other action is required.
After submitting the form, Install Anywhere figures out what version
would be best for your platform. Simply follow the instructions for your
platform (on the download page).
NOTICE: Mac users - must be running OS X or later.
Vase's opening screen presents you with a listing of Seismogram and
Network servers grouped by institution.
Scrollbars will appear as necessary to allow selecting servers which
are not displayed.
The column headed with SeismogramDC is the column which lists the waveform
servers. The NetworkDC column
The top section holds the map controls. The four modes allow
for drawing boxes, positioning points, selecting map items for
processing, and for free hand drawing of arbitrary shapes.
Box drawing: this mode allows one or more rectangles
to be drawn on the map. When querying the servers, stations will be
limited to these boxes.
Points mode: allows you to define one or more points.
These points can be used to define a center point for finding stations
within a distance. See Point and Distances.
Shape mode: allows you to draw an arbitrary shape on the
map. When querying for stations, the stations retrieved will be
limited to these shapes.
The pointing finger can be used to select a particular
rectangle, circle or shape for processing. The rectangle, shape or circle
will be highlighted which indicates your selection. You click on the
map somewhere inside the shape. Click again to deactivate. You can delete
selected lat/lon boxes, shapes, circles or stations.
Also when you pass this finger over a mapped station,
the station information (station name, lat/lon) will be displayed
in the "Messages" area.
Points and Distances
You can generate distance on the map from user defined
points (see above) or previously mapped stations. The default is to
use the map points. You can define a minimum and a maximum distance.
Circles will appear on the map. When querying stations, only stations
with lat/lons within the distance circles are fetched.
Clear Map will clear the map of all user entered
edits, shapes, points, and stations.
Zoom in will make the map larger. There are two
ways to zoom in. If ou have one and only one lat/lon box drawn on the
map, pressing the "Zoom In" button will zoom in on that area.
If there is no lat/lon box defined, or more than one, clicking on this
button will zoom in on the complete map as shown.
Zoom out will make the map smaller.
Reset map will bring back the original,
whole world map.
Below the map are the user query inputs and message areas.
As you pass over the map, the lat/lons are display in
the text area provided.
System messages, connection status, station information,
error conditions, progress information, etc, are displayed in the scrolling
The query section allows you to load networks/stations.
You can enter a start/end time, or specific networks, stations, locations
and channels. You can use wildcard for a shortcut. To download continuously,
use an endtime into the future.
Pressing "Load Network" will query the DHI for
stations and channels which meet your criteria. It will further delimit
the result by what is drawn on the map. It will only find stations which
lie within the lat/lon, point/distance or freehand shape as drawn on
For this query I zoomed in on the US area using the lat/lon
box drawing tool. Then I asked for networks II and IU.
On the right is the query result. You can click on the
triangle to expand the selection. You can select individual channels
or select a station for all channels for that station. Similarly, you
can select networks to display all stations and channels. And again
you can click on a data center for all networks, station and channels.
You can select more than one of any item. The keyboard
keys used to do this vary from PC to Mac to Linux. On the Mac you
press down the "Apple" key while clicking on a network
or station or channel. On a Windows and Linux machine it is <CNTRL><ALT><
mouse click> combo which will select multiple items.
Option 1: Option
Select individual or multiple
Select one or more networks.
Select multiple stations (all available
stations/channels from one network.
channels) from multiple networks.
To map the stations, press the "Map Stations"
To display the seismograms, press the "Display Seismograms"
button. A new tabbed pane will appear with the download process initiated.
If you have mapped any stations, Vase will use these as the basis for
the download. If among the mapped stations you have any "selected",
Vase will use this subset. If you haven't mapped any stations it will
use the list described above. If from this list you have any selected,
Vase will use these. [ view
Each time you click on the "Display Seismogram"
button a new tabbed pane will be created with the name "View Pane
n" where "n" is an incrementing number. Here is View
This screen is divided into 3 sections. Note that you
can expand the seismogram display area by dragging the corner of the
screen and also by dragging the divider bar located just above the seismogram
The top section holds some information areas and also
some control areas.
On the right, the current time is displayed along with
a slider which allows for setting the displayed window's time envelope.
In the center, are a left and right arrows which allow
for paging through the downloaded data (assuming a long enough seismogram).
It will page to whatever the window's time envelope is set to. You
can also jump to the beginning or end of the seismogram (to First or
to Last buttons) or specify a specific time (Goto (D:H:M)).
The scrolling bar with a seismogram animation is an indicator
that the program is receiving data. As data arrives the message to
that effect is displayed in the listing.
To the right are some option buttons.
You can save to disk in either the SAC or SAC ASCII formats.
The complete download will be saved. You can save all stations and
channels or by clicking on the station/channel name select one or
more for processing. The name will be highlighted in red indicating
Here is a screen shot showing some traces individually
You can individually select traces for saving to disk
After clicking on either the "Save to Sac" or
the "Save to SAC ASCII" buttons, you are presented with
a popup screen from which you can move around the directories on the
You can create directories and by clicking in the listing,
move around the hard drive. Click on the ".." entry to go
up a level.
When you are in the appropriate directory press the "Accept"
button. It will enter the appropriate station lat/lon and the
overall gain into the SAC header.
When you click on the zoom button, another window pops
up with a zoomed image of the original screen. To specify the time
range of the zoomed waveforms, drag the black vertical bars left
and right to the desired time envelope. Here, black bars are at about
22:35:03 and 22:53:03.
The zoom popup window will show this time window.
You can continue zooming in the same fashion. You can
zoom all waveforms, or select one or more by clicking over the name.
The name will be highlighted in red to indicate selection. You can
save the individual waveforms to disk in the same way.
The Message Window will detail progress as you save the
In between the top area and the seismogram display is
The purpose of this panel is to show the complete download
process. If you download many hours of data, the seismogram display
will only display the latest. This panel will show the complete time.
The narrow bar with the diamond represents the time of the currently
displayed area. You can click and drag this diamond to quickly move
to another time.
Here is a picture of a 10 hour download, with the last
hour being displayed:
Notice the diamond bar is indicating a displayed time
between the hours of 21 and 22:00 which matches the displayed seismograms.
To go quickly to 12:00 you would drag the diamond to the 12:00 marker
and release. The seismogram display will be updated.
With this release Vase makes use of a properties
file called Vase.props. This file will be located in the directory
into which you installed Vase. The purpose of the properties file is
to hold program initialization variables.
These variables include:
a "home" directory which Vase will use for saving downloads.
- enter an email for restricted license
- enter a password for this license
- enter "true" or "false" to
indicate to Vase whether to use an online map server or the internal
- enter a url base bame
- specifies to Vase what color to use when drawing.
maps, because they may be light or dark, need a light or dark color
to draw or else the drawing action won't be seen.
View Screen Options
The View Screen Options tab displays this screen:
The ViewPort Time Span options let you specify
the initial time envelope when displaying seismograms.
The Output Options let you save downloads
to what is termed
"Bud" directories. The Bud directory structure is a
hierarchical structure which has a topmost level named
bud. Underneath this are directories with the network names. Then
under these are the station directories, then channel
files which are grouped by day.
It will create this bud directory, in the Vase installation
directory, unless you enter a new path in the Bud Path entry area.