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Environmental monitoring of offshore Carbon Capture and Storage (CCS) complexes requires robust methodologies cost-effective tools to detect, attribute quantify CO2 leakage in the unlikely event it occurs from a sub-seafloor reservoir. Various approaches can be utilised for environmental CCS monitoring, but their capabilities are often undemonstrated more detailed strategies need developed. We ...

Methane emissions from liquid unloadings were measured at 107 wells in natural gas production regions throughout the United States. Liquid unloadings clear wells of accumulated liquids to increase production, employing a variety of liquid lifting mechanisms. In this work, wells with and without plunger lifts were sampled. Most wells without plunger lifts unload less than 10 times per year with ...

National Water-Quality Assessment (NAWQA) Program collected or compiled data on ground water from 1926 private wells in rural areas across the United States from 1986 to 1999. These private wells, also called domestic wells, are owned and operated by the homeowners and provide water for household uses, including drinking, food preparation, watering lawns and gardens, bathing, and washing clothe...

Naturally occurring arsenic contamination is common in ground water in the upper Midwest. Arsenic is most likely to be present in glacial drift and shallow bedrock wells that lie within the footprint of northwest provenance Late Wisconsinan glacial drift. Elevated arsenic is more common in domestic wells and in monitoring wells than it is in public water system wells. Arsenic contamination is a...

Soil salinity is a serious threat to coastal agriculture and has resulted in significant reduction agricultural output many regions. Jaffna Peninsula, semi-arid region located the northern-most part of Sri Lanka, also victim adverse effects salinity. This study investigated long-term soil changes their link with land use changes, especially paddy land. Two Landsat images from 1988 2019 were use...

Anthropogenic subsurface urban heat islands (SUHIs) in groundwater under cities are known worldwide. SUHIs potentially threats to springs because much spring biota, like trout, amphipods, and rare plants, is cold stenothermal. The city of Minneapolis, Minnesota, USA, has a SUHI documented by the temperature an underground spring, dubbed Little Minnehaha Falls, inside Schieks Cave, which located...

OBJECTIVE To monitor the effectiveness of deep community wells in reducing exposure to elevated levels of arsenic in groundwater pumped from shallower aquifers. METHODS Six community wells ranging in depth from 60 m to 140 m were installed in villages where very few of the wells already present produced safe water. By means of flow meters and interviews with villagers carrying water from the ...

AIMS AND METHODS A comparative study of abandoned street children and formerly abandoned street children was conducted in La Paz, Bolivia, representing the first such comparative assessment. Between August and December 1997, all abandoned street children in La Paz, Bolivia, who were willing to participate (n = 124) were interviewed repeatedly at night using standardised questionnaires to collec...

Human-driven land-use changes increasingly threaten biodiversity. In agricultural ecosystems, abandonment of former farmlands constitutes a major land-use shift. We examined the relationships between areas in which agriculture has been abandoned and the distribution records of threatened plant species across Japan. We selected 23 plant species that are currently identified as threatened but wer...