https://play.google.com/store/apps/details?id=gov.noaa.ngdc.wmm2&hl=en_US&gl=US&pli=1
NOAA's National Geophysical Data Center
About this app
CrowdMag
is a tool that measures the local magnetic field using your
smartphone! The app displays the data as a graph or a map in units of
nanotesla (nT; one nanotesla equals 10^−9 Tesla). The local
magnetic field components measured by CrowdMag are the Z (downward
component), H (horizontal intensity), and F (total intensity). Use
CrowdMag for measuring magnetic data during your outdoor adventures
or to conduct your own homegrown science! To perform your own
experiments or analyze your observations, export your data as a CSV
file. Optionally, your magnetic data may be shared with NOAA to help
scientists understand more about Earth’s magnetic field!
What
is new!
CrowdMag is going active! When you go out for a
walk, run, or other outdoor activities, use CrowdMag to measure the
magnetic data along your path and save the data as a “magtivity”.
Save, list, export or delete magtivities to create a complete
magnetic field map of your area. We particularly encourage you to
share your magtivities with our research group at NOAA and to have
multiple magtivities along the same path so that we can stack the
data to reduce the noise.
Getting a new phone? Don’t
worry! You can now export a backup of your CrowdMag and save it on
your computer. If you have to reset your phone, or switch to a new
phone, you can now import your backup and continue using CrowdMag
without losing your status for data contributed, areas covered, or
magtivities completed.
CrowdMag’s magnetic
calculator provides magnetic variation (declination), the magnetic
field’s dip angle, total magnetic field and other magnetic
field components (as well as their associated uncertainties) based on
the latest World Magnetic Model (WMM2020).
CrowdMag
Features:
- Create your own magnetic activity
(magtivity)
- Customize recording frequency and location
accuracy
- Interactive Google Map provides a map of your
magnetic data
- Graph your data as a time series line chart
-
Check the quality of the data by comparing it with the WMM
-
Export your data as a CSV file
- Clear stored data on your
phone
- Optionally share your data with NOAA
- See
generalized crowdsourced magnetic data from other users
- Live
magnetic compass
- Current solar magnetic disturbance
-
Expected magnetic field calculator
- Uses the most recent
magnetic field model (WMM2020)
- Export data via email, Google
Drive and other options
- Export CrowdMag backup to save your
contributions' status and data
- Import CrowdMag backup (works
across different phone platforms)
Visit
https://ngdc.noaa.gov/geomag/crowdmag.shtml to see crowdsourced
magnetic data.
A quick tutorial on CrowdMag app usage
https://www.noaa.gov/education/resource-collections/data/tiny-tutorials/crowdmag
Updated on Dec 3, 2022
File Type | application/vnd.openxmlformats-officedocument.wordprocessingml.document |
Author | Joe.I.Terry |
File Modified | 0000-00-00 |
File Created | 2023-08-19 |