Scientists divided on causes of Palghar quake

Tag: 西湖阁 万花楼 龙凤阁

first_imgPalghar district has seen thousands of small earthquakes since November 2018, but Friday’s quake measuring 4.3 on the moment magnitude (Mw) scale was the first time the magnitude crossed 4 here. Scientists, however, are divided on the primary cause of this phenomenon. Some believe it is related to groundwater levels, and others attribute it to tectonic activity. If high groundwater is the cause, the quakes may remain small. This phenomenon, called hydroseismicity, is common across the Deccan plateau. However, another hypothesis is that intra-plate tectonic forces could be generating stresses along faults in Palghar. Such a mechanism is believed to be behind the 1993 Latur earthquake. If intra-plate activity is the cause, Palghar could see larger, more destructive quakes.Till a while ago, seismologists believed the driver behind the Palghar activity was hydroseismicity. In this phenomenon, rainwater enters the faults in the earth’s crust. This increases pressure, which is released through small earthquakes. In 2017, after heavy rains, such a phenomenon occurred in Hyderabad’s Borabanda suburb. “It continued for a month and a half and stopped,” said D. Srinagesh, chief scientist at the National Geophysical Research Institute in Hyderabad. Such earthquakes typically measure less than 4 Mw and subside by December. They are also very shallow, typically emerging from within 4-5 km underground. In contrast, the Palghar quakes have continued into February, indicating that tectonic activity is at play, says Dr. Srinagesh. Also, a few of the temblors originated from 15 km underground, deeper than most hydroseismic quakes. With magnitude crossing 4 Mw this month for the first time, “all we can say is that disaster mitigation procedures should be set into motion,” he said.However, Vineet Gahalaut, Director of the National Centre for Seismology, New Delhi, said hydroseismicity couldn’t be ruled out yet. The Mw 4.3 quake was not necessarily significant, he said, because previously, quakes measuring Mw 3.7 had occurred. This small increment in magnitude was consistent with the ‘swarm’ pattern of hydroseismicity, he said. Further, according to him, the quakes were clustered within a small area, again a feature of hydroseismicity. Yet, he cautioned that it was impossible to discount tectonic activity as a cause.Previously, scientists had estimated that Palghar could see a “maximum credible earthquake” measuring Mw 6.5. The MCE is the largest quake that can occur in a region. All of Palghar’s buildings must be prepared for this, seismologists say, though the timing cannot be predicted.last_img read more


Tag: 西湖阁 万花楼 龙凤阁

first_imgPerlas’ Bea Tan and Dij Rodriguez topped Pool A with a 2-0 record following a 21-17, 21-13 victory over San Beda’s Ella and Nieza Viray, while Air Force 1’s May Ann Pantino and Jozza Cabalsa completed a three-match sweep of Pool C assignments following a 21-10, 21-7 decision over University of the Philippines’ alums Pam Legaspi and Aliya Ong.NU Boysen 1’s Roma Joy Doromal and Kly Orillaneda ruled Pool B with a 2-0 slate after scoring a 21-10, 21-8 win over Pangasinan 2’s Tricia Abalos and Abigail Guzman.FEATURED STORIESSPORTSPrivate companies step in to help SEA Games hostingSPORTSPalace wants Cayetano’s PHISGOC Foundation probed over corruption chargesSPORTSSingapore latest to raise issue on SEA Games food, logisticsPangasinan has a team that made it to the top eight as Alaminos’ Karen Mae Vinluan and April May de Guzman turned back Legaspi and Ong, 21-17, 22-20, to finish second in Pool C with a 2-1 cardThe other women’s quarterfinalists are San Beda’s Viray twins (1-1), Air Force 2’s Mikaela Andres and Angel Antipuesto (1-1), and NU Boysen 2’s Landicho and Epa (1-1). LATEST STORIES Don’t miss out on the latest news and information. Trending Articles PLAY LIST 00:50Trending Articles00:36Manny Pacquiao part of 2019 SEA Games opening ceremony00:50Trending Articles02:42PH underwater hockey team aims to make waves in SEA Games01:44Philippines marks anniversary of massacre with calls for justice01:19Fire erupts in Barangay Tatalon in Quezon City01:07Trump talks impeachment while meeting NCAA athletes02:49World-class track facilities installed at NCC for SEA Games02:11Trump awards medals to Jon Voight, Alison Krauss THE participants of the BVR On Tour: Lingayen Open give a thumbs-up sign together with Pangasinan 2nd District Rep. Leopoldo N. Bataoil during the opening ceremony Tuesday at the Capitol Beachfront. CONTRIBUTED PHOTOLINGAYEN – Sta. Lucia’s Jackie Estoquia and DM Demontaño made a successful comeback in the Beach Volleyball Republic On Tour, winning two matches to advance to the quarterfinals Tuesday at the Capitol Beachfront here.Playing for the first time since the Santa Ana Open in Cagayan last year, Estoquia and Demontaño displayed tremendous improvement in the sand court, opening their campaign with a 21-7, 21-12 conquest of Rizal Technological University’s Hannah Patrocenio and Myla Lim before completing a sweep of Pool D matches with a 21-10, 21-12 romp of NU Boysen 2’s Bingle Landicho and Kath Epa.ADVERTISEMENT SEA Games hosting troubles anger Duterte Action resumes Wednesday with the quarterfinals starting at 7 a.m., with the semis and finals to be played in the afternoon.Sports Related Videospowered by AdSparcRead Next ‘Walang bigayan’: Expect all-out war between sister teams Magnolia, San Miguel Cayetano: Senate, Drilon to be blamed for SEA Games mess Hontiveros presses for security audit of national power grid Philippine Arena Interchange inaugurated View comments Duterte wants probe of SEA Games mess Panelo: Duterte ‘angry’ with SEA Games hosting hassles DA eyes importing ‘galunggong’ anew MOST READ Private companies step in to help SEA Games hostinglast_img read more