Sunday, 04 December 2022

 

 

LATEST NEWS President of India Presents National awards for The Empowerment of Persons With Disabilities for The Year 2021 and 2022 India's bio-economy has grown 8 times in the last 8 years : Dr Jitendra Singh In natural farming the cost is less and more yield : Narendra Singh Tomar Investors conclave on commercial coal mines auction and opportunities in mining sector held in Bengaluru ‘International Conference Series on Vayu: The Vital Life Force’ inaugurated by Prof. Ganeshi Lal and Bhupender Yadav The world looks to New India for Tech & Innovation leadership: Rajeev Chandrasekhar MTMP : Director Tourism Kashmir visits Sumbal under Shehri Jan Abhiyan DC Bandipora visits fire victims at remote village TA Shah 3rd Randomization of Poll parties for DDC Re-poll held at Bandipora DE&CC Srinagar conducts Job Fair at Polytechnic College, Gogji Bagh DDC Re-poll : DPEO Bandipora finalises preparations MTMP : Week-long Jan Shehri Abhiyan in full swing at Shopian DC Baseer-ul-Haq Choudhary visits MC Pulwama Jai Inder Kaur thanks BJP leadership for appointing her as the State Vice President BJP to launch Mandal level awareness campaign across J&K on New Industrial Policy: Devender Singh Rana Police solves murder case within 24hrs in Budgam Dilbag Singh Chairs joint review meeting at Delta Force Headquarters Ramban Shemrock Senior Secondary celebrated Musical Soiree Sheikh Zayed Festival lights up the sky with“Together for the Future” 13KG Heroin Recovery Case: Punjab Police Arrests Two More Aides From Rajasthan Ghani Syaani Teaser: MC Square & Shehnaaz Gill Collaborates In Their Upcoming Song

 

2 largest marsquakes recorded on Red Planet's far side

NASA, National Aeronautics and Space Administration, Washington, Mars, InSight Lander

Web Admin

Web Admin

5 Dariya News

London , 23 Apr 2022

A seismometer placed on Mars by NASA's InSight lander has recorded two largest seismic events on the Red Planet to date: a magnitude 4.2 and a magnitude 4.1 marsquakes.The pair are the first recorded events to occur on the planet's far side from the lander and are five times stronger than the previous largest event recorded.Seismic wave data from the events could help researchers learn more about the interior layers of Mars, particularly its core-mantle boundary, researchers from InSight's Marsquake Service (MQS) reported in The Seismic Record.A team led by Anna Horleston of the University of Bristol were able to identify reflected PP and SS waves from the magnitude 4.2 event, called S0976a, and locate its origin in the Valles Marineris - a massive canyon network that is one of Mars' most distinguishing geological features and one of the largest graben systems in the Solar System.

S1000a - the magnitude 4.1 event recorded 24 days later - was characterised by reflected PP and SS waves as well as Pdiff waves, small amplitude waves that have traversed the core-mantle boundary.This is the first time Pdiff waves have been spotted by the InSight mission.The researchers could not definitively pinpoint S1000a's location, but like S0976a it originated on Mars' far side. The seismic energy from S1000a also holds the distinction of being the longest recorded on Mars, lasting 94 minutes.Both marsquakes occurred in the core shadow zone, a region where P and S waves can't travel directly to InSight's seismometer because they are stopped or bent by the core. 

PP and SS waves donat follow a direct path, but rather are reflected at least once at the surface before travelling to the seismometer.The two marsquakes differ in some important ways. S0976a is characterised by only low frequency energy, like many of the quakes identified so far on the planet, while S1000a has a very broad frequency spectrum.S0976a is likely to have a much deeper origin than S1000a, Horleston noted.Compared to the rest of the seismic activity detected by InSight, the two new far-side quakes are true outliers, the researchers said."Not only are they the largest and most distant events by a considerable margin, S1000a has a spectrum and duration unlike any other event previously observed. They truly are remarkable events in the Martian seismic catalogue," Horleston said.

 

Tags: NASA , National Aeronautics and Space Administration , Washington , Mars , InSight Lander

 

 

related news

 

 

 

Photo Gallery

 

 

Video Gallery

 

 

5 Dariya News RNI Code: PUNMUL/2011/49000
© 2011-2022 | 5 Dariya News | All Rights Reserved
Powered by: CDS PVT LTD