Thanks for the answers.

*I have developed a travel time program which uses the same JB tables as
WinQuake. You paste in the station coordinates and the event data, select a
batch file containing the phases you want listed, and you will get a
listing on the clipboard of the arrival times of the selected phases at the
station. It works much the same way as WinQuake, but you do not need a
WinQuake event file for obtaining the information. To get a complete list
of all possible phases, use the included "BIGLIST.jbb" as the batch file.*
*The program can be downloaded from
https://sites.google.com/site/bobmcclure90/traveltime


*
*

**Bob McClure*

I have your program for some time, its a simple easy tool.

But i want implement a simple interactive Arrival Time calculator online,
not so complete like USGS have, just the basic.


2012/7/3 Larry Cochrane 

> Hi Tiago,
>
>
>  The main idea of GPSMap is to easy access to helicorders around the
>> world, but i can
>> think in a solution for offline stations.
>>
>>
>> I=B4m rebuilding GPSMap (i will announce here when the new version is
>> launched), one of
>> the new features i=B4m working on is a Time Travel "calculator"..but i h=
ave
>> some doubts:
>>
>> 1) Which model should i use? IASP91, AK135, JB, other(?)? WinQuake
>> suggests using
>> different tables for teleseismic, local, regional events...
>>
>
> I believe that the ISAP91 model is newer then the JB tables so I would us=
e
> it. I'm not sure about the AK135 (sounds like a gun ) model.
>
>
>
>> 2) Many tables i=B4ve found only have some depths (ex: depth 0km 15km 35=
km
>> 50km) and is
>> related to one distance degree, how can i calculate the time travel for
>> depth 8km at
>> a distance of 40km (ex)?
>>
>>
> The only thing you can do is interpolate between the two points in the
> table. Here is the C code used in WQ to do the interpolation;
>
> double interpol(double x, double y, double a, double b, double point)
> {
>         return(a + ((point - x) * ((b - a) / (y - x))));
> }
>
> Hope this helps.
>
> Regards,
> Larry Cochrane
> Webtronics
> ______________________________**____________________________
>
> Public Seismic Network Mailing List (PSNLIST)
>
> To leave this list email PSNLIST-REQUEST@.............. with the body of
> the message (first line only): unsubscribe
> See http://www.seismicnet.com/**maillist.htmlfor more information.
>

Thats the solution, thanks for pointing out the way to go Larry.

 I started working with AK135, but most of tools uses JB or IASP91, so i
got a bit confused which one to follow..i will keep with IASP91.

This is a early stage (its still using fixed depths, i havent done much bug
check in the maths):
http://dl.dropbox.com/u/15802004/tt.jpg

Red Marker - Earthquake Location
Green Markers - Location of Online Stations
Pink Markers - Pinpoint both locations and it will return the time travel.
The markers are draggable, so it can be dragged to any location, that will
return automatically the time travel.

Any suggestions to make it more useful i appreciate.

Best Regards,
Tiago.
Thanks for the answers.

I have developed a travel=20
time program which uses the same JB tables as WinQuake. You paste in the
 station coordinates and the event data, select a batch file containing=20
the phases you want listed, and you will get a listing on the clipboard=20
of the arrival times of the selected phases at the station. It works=20
much the same way as WinQuake, but you do not need a WinQuake event file
 for obtaining the information. To get a complete list of all possible=20
phases, use the included "BIGLIST.jbb" as the batch file.

The program can be do=
wnloaded from=A0
https://sites.google.com/site/bobmcclure90/traveltime 

=



Bob McClure
=


I have your program for some time, its a simple easy tool.



But i want implement a simple interactive Arrival Time calculator online, n=
ot so complete like USGS have, just the basic.


2012/7/3 Larry Cochrane <lcochrane@webtronic=
s.com>

Hi Tiago,





The main idea of GPSMap is to easy access to helicorders around the world, =
but i can

think in a solution for offline stations.





I=B4m rebuilding GPSMap (i will announce here when the new version is launc=
hed), one of

the new features i=B4m working on is a Time Travel "calculator"..=
but i have some doubts:



1) Which model should i use? IASP91, AK135, JB, other(?)? WinQuake suggests=
 using

different tables for teleseismic, local, regional events...




I believe that the ISAP91 model is newer then the JB tables so I would use =
it. I'm not sure about the AK135 (sounds like a gun <grin>) model=
..







2) Many tables i=B4ve found only have some depths (ex: depth 0km 15km 35km =
50km) and is

related to one distance degree, how can i calculate the time travel for dep=
th 8km at

a distance of 40km (ex)?






The only thing you can do is interpolate between the two points in the tabl=
e. Here is the C code used in WQ to do the interpolation;



double interpol(double x, double y, double a, double b, double point)

{

=A0 =A0 =A0 =A0 return(a + ((point - x) * ((b - a) / (y - x))));

}



Hope this helps.



Regards,

Larry Cochrane

Webtronics

__________________________________________________________



Public Seismic Network Mailing List (PSNLIST)



To leave this list email PSNLIST-REQUEST@.............. with the body of the m=
essage (first line only): unsubscribe

See h=
ttp://www.seismicnet.com/maillist.html for more information.
=

Thats the solution, thanks for pointing out the way t=
o go Larry.


=A0I started working with AK135, but most of tools uses JB or IASP91, s=
o i got a bit confused which one to follow..i will keep with IASP91.
This is a early stage (its still using fixed depths, i havent done much bu=
g check in the maths):

http://dl.dropbox.com/u=
/15802004/tt.jpg

Red Marker - Earthquake Location
Green Marke=
rs - Location of Online Stations
Pink Markers - Pinpoint both locations =
and it will return the time travel. The markers are draggable, so it can be=
 dragged to any location, that will return automatically the time travel.

Any suggestions to make it more useful i appreciate.

Best Regard=
s,
Tiago.