Start Dating groundwater

Dating groundwater

Nitrate levels generally meet USGS water quality standards, but continue to gradually increase over time.

The destruction of playas by farmers and development decreases the available recharge area.

The deposition of aquifer material dates back two to six million years, from the late Miocene to early Pliocene ages when the southern Rocky Mountains were still tectonically active.

From the uplands to the west, rivers and streams cut channels in a generally west to east or southeast direction.

An aquifer is a groundwater storage reservoir in the water cycle.

While groundwater is a renewable source, reserves replenish relatively slowly.

During our study period, we found the highest cesium-137 (137Cs) levels (up to 23,000 Bq⋅m−3) outside of the FDNPP site not in the ocean, rivers, or potable groundwater, but in groundwater beneath sand beaches over tens of kilometers away from the FDNPP.

Here, we present evidence of a previously unknown, ongoing source of Fukushima-derived 137Cs to the coastal ocean…

[Researchers] found unusually high levels of radioactive cesium-137 in the groundwater beneath several beaches… As the researchers write, “Aside from the aquifer beneath [the plant], the highest recorded present-day activities of [cesium-137] in the aqueous environment in Japan are associated with brackish groundwater underneath beaches.” IFL Science, Oct 2, 2017: Scientists investigating the Fukushima Daiichi nuclear power plant in Japan have found an unexpected source of radioactive material…