What is the quietest place on Earth? The winner is… Seismic station QSPA at Quiet South Pole, Antarctica. And it's about to get even quieter. Find out why that's important to Earth scientists at usgs_seismic uw_icecube
to detect and locate worldwide earthquakes. It has been the only continuously operating seismic station in the Antarctic interior since it was installed in 1957, and it is the only station on the planet at a Pole. The nearest station to QSPA is a distant 12° away on the Antarctic coast . If QSPA were in Denver, Colorado, the next nearest permanent seismometer would be in Houston, Texas. Its location fills a large gap on the planet that helps accurately locate earthquakes across the world.
At mid-frequencies, QSPA records unique information such as Southern Ocean wave activity as it interacts with sea ice and the Antarctic coastline. The station also records some of the movements of large ice streams in Antarctica. Therefore, seismic records from SPA/QSPA have the potential to provide information regarding how ocean wave activity, sea ice, and the movements of ice sheets have changed over the last six decades. These signals are not considered noise.
High- and mid- frequency signals don’t get in the way of recording Earth whispers; low-frequency noise is the main concern, and here is where QSPA’s location at the South Pole has the advantage. Broadband seismometers, like QSPA, can record the low-frequency regular Earth tides caused by the gravitational pull on the Earth from the Moon, and the oscillations of the whole earth after a very large earthquake.
The South Pole presents additional unique challenges for seismic stations. Seismometers are not built for ice and extreme cold. Antarctica is covered by ice that is on average 2,160 meters thick, and the average year-round temperature is -50 degrees C , with winter temperatures as low as -70 degrees C .
México Últimas Noticias, México Titulares
Similar News:También puedes leer noticias similares a ésta que hemos recopilado de otras fuentes de noticias.
Caldor Fire Forces Evacuations in South Lake TahoeEvacuation warnings were issued Sunday for the southern part of the Lake Tahoe Basin, in South Lake Tahoe (corrects an earlier tweet, which has been deleted, that incorrectly stated warnings were issued for the entire basin)
Leer más »
South Africa detects new coronavirus variant, still studying its mutationsSouth African scientists have detected a new coronavirus variant with multiple mutations but are yet to establish whether it is more contagious or able to overcome the immunity provided by vaccines or prior infection.
Leer más »
South Korea becomes first country to curb Google and Apple's payment dominance in landmark rulingGoogle and Apple's current policies usually require developers to pay them a commission as high as 30% in every transaction.
Leer más »
AVOD Service DistroTV Launches ‘Desi’ Bundle In North America & UK With 15+ South Asian ChannelsEXCLUSIVE: DistroTV, one of the largest independent, ad-supported streaming platforms in the world, is launching ‘DistroTV Desi’, which will offer more than 15 premier South Asian channels. The bun…
Leer más »
Why Synchrony CEO Margaret Keane Was Painting Nails In The South BronxSynchrony Financial CEO Margaret Keane's commitment to corporate justness extends beyond fostering diversity in the C-suite and board. Last week, she found herself painting the nails of homeless women in the south Bronx, as part of a way to give back to Synchrony's community.
Leer más »
South Korea bans Google, Apple payment monopoliesSouth Korea’s National Assembly has approved legislation that bans app store operators such as Google and Apple from forcing developers to use their in-app payment systems
Leer más »