Human Activity Is Changing Earth’s Tilt
Groundwater pumping is changing Earth’s tilt. A new study published in the journal Geophysical Research Letters found that the Earth’s rotational poles have moved eastward by nearly 80 centimeters since 1993. This eastward shift is caused by the redistribution of water mass. As groundwater is pumped out of the ground, it is replaced by seawater. This makes the continents lighter and the oceans heavier, which causes the Earth’s rotational poles to shift eastward.
The amount of groundwater that humans have pumped out of the ground in recent years is staggering. Between 1993 and 2010, humans pumped 2,150 gigatons of groundwater, which is equivalent to more than 6 millimeters of sea level rise. This groundwater pumping is having a significant impact on Earth’s tilt.
The eastward shift in the poles is a relatively small change, but it could have a number of important consequences. For example, it could change the timing of the seasons and the severity of weather events. It is important to address the issue of groundwater depletion. We need to find ways to use groundwater more sustainably and to reduce our reliance on it.
Here are some ways to reduce our reliance on groundwater:
- Use rainwater harvesting to collect and store rainwater for use during dry periods.
- Install water-efficient appliances and fixtures in your home and business.
- Fix any leaks in your plumbing system.
- Water your lawn and garden less often.
- Choose plants that are native to your area and require less water.
By taking these steps, we can reduce our reliance on groundwater and help to protect Earth’s tilt.