Methane Plume Detection
Point-source plume outlines over wellpads, compressor stations and processing facilities, from free hyperspectral archives.
Column enhancement over oil and gas facilities. Reviewed public plume products pass through with their provenance, and our own filter runs alongside as screening.
Point-source methane column enhancement over oil and gas infrastructure, drawn from the open hyperspectral archive.
WHAT THE SENSOR SEES
What this layer looks for.
The laboratory reference for each material, and what the sensor's band spacing captures of it. The shaded band marks the range the method reads.
WHAT IT FINDS
What it detects.
| Material | Typical setting | What can confuse it |
|---|---|---|
| Methane column enhancement (ΔCH4) | Wellpads, compressor stations, gas pipelines, coal mine vents, and landfills | Surface carbonate and clay absorb in the same window; dark surfaces return too few photons to retrieve from |
METHOD
How it works.
Calibrated reflectance goes in, and every pixel is fitted against a public reference library.
Reviewed plume product ingest
Where a public agency has published a reviewed plume for the scene, it is ingested and passed through with its provenance intact. Missing values stay missing, with a stated reason, and no rate is attached that the publisher did not state.
Columnwise matched filter
Background covariance is estimated per detector column with adjacent columns merged, Schafer-Strimmer shrinkage applied, and brightness deflated jointly so a bright roof does not read as gas.
Noise calibration and confuser rejection
The filter output is scaled against its own negative tail, dark pixels are refused outright, and known surface confusers are rejected before anything is drawn.
Connectivity gate
Isolated hot pixels are discarded. A plume has to hold together spatially to survive, which is the cheapest defence against a filter that will always produce some response.
SPECIFICATIONS
What you get, and what it runs on.
Conditions it needs
Method and checks are documented in Axine Applied Spectroscopy Paper #2 · Section 3.4.
Scope
A screening layer that needs sunlight and bright, dry ground. A plume outline is a place to send an inspection.
RUN IT OVER YOUR GROUND
Run this layer over your own area.
Order processing over your area of interest, or a tasked capture where the archive has nothing usable. Imagery access is never charged for: a plan buys the models.
COMPLEMENTARY ANALYTICS
Related layers.
Geothermal Cap Mapping
Finds active and fossil reservoir caps through ammonium minerals, alunite and silica sinter.
Hydrocarbon Microseepage
Surface alteration patterns above petroleum basins, reported as indicators rather than as a find.
Pipeline Corridor Terrain Stability
Tracks swelling clays and moisture along a corridor, so crews go where the ground actually moved.