Delaware Valley Orienteering Association

Topic created by edscott on Sat Dec 5, 2020 at 11:03 am

edscott
Num Posts: 703
Primary Club: DVOA
Fav map: Hickory Run 1:15000
First O: 1983

Ready to re-do all our maps?  ttps://www.iflscience.com/environment/earths-north-magnetic-pole-is-heading-towards-siberia-and-scientists-now-know-why/?fbclid=IwAR29cJ_UdHwemtiHnylVuyZa_sI5alUF3B_YiTqsZaWl0hV8h-iNYmlNH5g

Reply by furlong47 on Sat Dec 5, 2020 at 12:58 pm

furlong47
Num Posts: 385
Primary Club: DVOA
Fav map: Bucks County Community College
First O: 1994

It has always been moving, though the movement has been accelerating. 

https://www.ngdc.noaa.gov/geomag/GeomagneticPoles.shtml

This is fun to play with.... it looks like our local declination has shifted about 2 degrees since 1999.

https://maps.ngdc.noaa.gov/viewers/historical_declination/ (zoom in to the area you want to check out, use the slider to change the year, click on the lines to see the declination)

Reply by edscott on Sat Dec 5, 2020 at 5:23 pm

edscott
Num Posts: 703
Primary Club: DVOA
Fav map: Hickory Run 1:15000
First O: 1983

Yes it has been always been happening, and the rate is accelerating.