# Tag Info

## Hot answers tagged in-situ-measurements

7

The magnitude of an earthquake is related to the total energy released, therefore to estimate it from a seismogram you need to know the distance to the source. In the case of the Richter scale for example, the relationship between magnitude and seismogram amplitude is defined for a standard distance. If you have only one seismograph, you can not triangulate ...

5

Each float costs around US$15,000 and communication, deployment and calibrations costs approximately double the through-life cost of each float. (from http://www.argo.ucsd.edu/Argoflyer_final.pdf) One can roughly estimate from this source, given a life-span of four years, an Argo float costs slightly over \$3.5k/yr (float only) or \\$7k/yr (including ...

4

Short answer: 0.2 times the total length of your cable(s). 100m rollout --> ~20m depth Bear in mind that the deeper you get, the more you have to be careful with your data interpretation. Also if you do a roll-along your depth doesn't get deeper. Long answer see Bernard J (2003): Short note on the depth of investigation of electrical methods. Heritage ...

Only top voted, non community-wiki answers of a minimum length are eligible