Missing data and the accuracy of magnetic-observatory hour means
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Abstract
Analysis is made of the accuracy of magnetic-observatory hourly means constructed from definitive minute data having missing values (gaps). Bootstrap sampling from different data-gap distributions is used to estimate average errors on hourly means as a function of the number of missing data. Absolute and relative error results are calculated for horizontal-intensity, declination, and vertical-component data collected at high, medium, and low magnetic latitudes. For 90% complete coverage (10% missing data), average (RMS) absolute errors on hourly means are generally less than errors permitted by Intermagnet for minute data. As a rule of thumb, the average relative error for hourly means with 10% missing minute data is approximately equal to 10% of the hourly standard deviation of the source minute data.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Missing data and the accuracy of magnetic-observatory hour means |
| Series title | Annales Geophysicae |
| DOI | 10.5194/angeo-27-3601-2009 |
| Volume | 27 |
| Year Published | 2009 |
| Language | English |
| Publisher | EGU |
| Contributing office(s) | Geologic Hazards Science Center |
| Description | 10 p. |
| First page | 3601 |
| Last page | 3610 |
| Google Analytic Metrics | Metrics page |