Figure 3 | Scientific Reports

Figure 3

From: Assessing Connectivity Between an Overlying Aquifer and a Coal Seam Gas Resource Using Methane Isotopes, Dissolved Organic Carbon and Tritium

Figure 3

(a) A map of CSG developments and co-produced water storage reservoirs. The blue rectangles represent the location of the water storage reservoirs and the red line indicates the route of the mobile survey. The A-B represents the mobile CH4 measurement traverse lines, where Tedlar bag samples were collected downwind of the co-produced water reservoir to establish the isotopic composition of CH4 extracted from the WCM (Map created in QGIS; data and imagery: MapQuest, Open Street Map and contributors, CC-BY-SA55. Modified with Corel Painter 201556). (b) CH4 concentration measured along the line A-B in the plume downwind of the co-produced water storage reservoir. The horizontal red line indicates the background CH4 concentration of 1.774 ppm.

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