Magnetic variation
Submitted: Saturday, May 17, 2008 at 10:37
ThreadID:
57693
Views:
10268
Replies:
6
FollowUps:
11
This Thread has been Archived
Mike Harding
I'm sure you sailors out there will know the answer :)
I'm trying to discover the current magnetic variation for
Melbourne (accuracy to 0.5 deg will do) and am somewhat confused: if I'm reading it correctly the Geoscience Australia calculator gives a result of 5.498 deg. but web searches indicate about 11.3 deg?
GSA calculator
Mike Harding
Reply By: Member - Roscoe ET (QLD) - Saturday, May 17, 2008 at 11:28
Saturday, May 17, 2008 at 11:28
Mike,
Mike I can't get the calculator to work for your area keeps coming up with a blank page. I have checked the calculator against the charts I have for where I fish (Hervey Bay) and it is spot on, a variation of 10.319 degrees E same as the chart.
11.3 degrees E for where you are should be accurate it couldn't be 5.498 degrees.
I went into Google earth and with the pointer over
Melbourne I came up with Lat37.44 75E and Long144.55.39S. When you performed the calculation did you make sure you had a - in front of the Latitude figure it needs to be a - because we are south of the Equator and + for Long because we are east of Greenwich.
AnswerID:
304305
Follow Up By: Member - Roscoe ET (QLD) - Saturday, May 17, 2008 at 11:42
Saturday, May 17, 2008 at 11:42
Mike,
I meant to add, get a look at a chart of Port Phillip Bay it will have the variation in the compass rose on the chart.
FollowupID:
570386