magnetics
A magnetics object represents geolocated, time stamped geomagnetic survey data. This data is used extensively in exploration for mineral resources, environmental investigations, fundamental earth science mapping, and other fields where the magnetic properties of subsurface materials provide insight.
The type parameter describes the survey mode (i.e., how the acquisition was carried out), and must take one of the values "GROUND", "AIR" or "MARINE".
The survey_type parameter describes the type of measurement:
- "TMI" indicates Total Magnetic Intensity measurements
- "VMG" stands for Vector Magnitude, a 3-component (triaxial) vector measurement
- "MGRM" stands for Magnetic Gradiometry, a 3D tensor representation with 5 unique components
The gradient_magnetic object includes details about gradient magnetic measurements, including the number of sensors and their offsets.
The base_stations array includes at least one base station definition, comprising name, location, survey_type and a list of magnetic lines for which it is associated. In this case, survey_type in the sub-object refers to the survey type of the base station measurements.
The magnetic_line_list array includes one or more survey-line definitions, including the date, version, and group of the survey. Each survey-line definition indicates the type of survey line (the geometry and intended use), channel mappings, and the associated channel attribute data.
The qaqc_magnetic_azimuth_test_list array includes QA/QC information describing the magnetic asimuth tests done at the beginning of the survey in a non-magnetically responsive location.
The qaqc_noise_test_list array includes QA/QC information measuring ambient noise. This is typically acquired at multiple elevations at the beginning of the survey.
Properties
magnetics (v1.2.0)
Magnetics survey data.
| Property | Type | Description | Flags |
|---|---|---|---|
| name | String | Name of the object. | ⬆️ ✅ |
| uuid | base-object-properties | Identifier of the object. | ⬆️ ✅ |
| description | String | Optional field for adding additional description to uniquely identify this object. | ⬆️ |
| extensions | Object | Extended properties that may be associated to the object, but not specified in the schema | ⬆️ |
| tags | Object | Key-value pairs of user-defined metadata | ⬆️ |
| lineage | lineage | Information about the history of the object | ⬆️ |
| bounding_box | bounding-box | Bounding box of the spatial data. | ⬆️ ✅ |
| coordinate_reference_system | crs | Coordinate system of the spatial data | ⬆️ ✅ |
| schema | String | ✅ | |
| type | String | Survey mode. | ✅ |
| survey_type | String | Type of survey. | ✅ |
| gradient_magnetic | magnetics | Gradient magnetic details. | |
| base_stations | Array[magnetics] | Base stations. | |
| magnetic_line_list | Array[survey-line] | Magnetic line list. | ✅ |
| qaqc_magnetic_azimuth_test_list | Array[survey-line] | QA/QC Magnetic azimuth test list. | |
| qaqc_noise_test_list | Array[survey-line] | QA/QC Magnetic noise test list. |
Legend
| Flag | Description |
|---|---|
| ⬆️ | Inherited property |
| ✅ | Required property |
