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2019–20 Puerto Rico earthquakes

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Starting on December 28, 2019,[7] and progressing into 2020, the southwestern part of the island of Puerto Rico was struck by an earthquake swarm,[8] including 11 that were of magnitude 5 or greater.[9] The largest and most damaging of this sequence was a magnitude 6.4 Mw, which occurred on January 7 at 04:24 AST (08:24 UTC),[10] with a maximum felt intensity of VIII (Severe) on the Modified Mercalli intensity scale.[11] At least one person was killed, and several others were injured.[12][13]

2019–22 Puerto Rico earthquakes
2019–20 Puerto Rico earthquakes is located in Puerto Rico
Mayagüez
Mayagüez
San Juan
San Juan
Ponce
Ponce
2019–20 Puerto Rico earthquakes
UTC time2020-01-07 08:24:26
ISC event617125982
USGS-ANSSComCat
Local dateJanuary 7, 2020 (2020-01-07)
Local time04:24 AST
Magnitude6.4 Mw
Depth10 km (6 mi)
Epicenter17°54′58″N 66°48′47″W / 17.916°N 66.813°W / 17.916; -66.813
FaultPunta Montalva[1]
TypeOblique-slip normal[2]
Total damage$3.1 billion USD[3]
Max. intensityMMI VIII (Severe)
Peak acceleration0.52 g[4]
Peak velocity24.45 cm/s[4]
Aftershocks7,600~ (M≥2.5, as of January 7, 2022)[5]
Casualties4 dead, 9 injured[6]

A 5.8 Mw earthquake the previous day caused the destruction of a natural arch, a tourist attraction at Punta Ventana in Guayanilla.[14] A 5.9 Mw aftershock on Saturday, January 11, damaged many structures, including several historical buildings as well as modern high-rises in the city of Ponce.[15]

Power was lost island-wide immediately after the quake and was increasingly restored over a period of a week. Damage to homes was extensive and, by 14 January, more than 8,000 people were homeless and camping outdoors in various types of shelters, with 40,000 others camping outside their homes, just in the city of Ponce alone.[16] There were refugees in 28 government-sponsored refugee centers spread over 14 municipalities of southern and central Puerto Rico.[17] Damage to government structures was calculated in the hundreds of millions[8] and financial losses were estimated in $3.1 billion.[3] A power plant that supplied over a quarter of Puerto Rico's energy needs was badly damaged and was shut down, with repairs estimated to take at least a year.[18]

The day of the main quake, January 7, Puerto Rico governor Wanda Vázquez Garced declared a state of emergency and activated the Puerto Rico National Guard and the Puerto Rico State Guard. That same day, she also made available $130 million in aid to the municipalities affected.[19] The White House also approved $5 million in federal emergency relief.[20][21] On January 12, the day after the January 11 5.9 aftershock, the governor distributed $12 million to six municipalities most affected by the quake.[22][23] Tent cities were set up in five of the hardest-hit towns with space for some 3,200 refugees.

Tectonic setting

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Puerto Rico lies at the highly oblique convergent boundary between the Caribbean plate and the North American plate. A separate Puerto Rico–Virgin Islands microplate has been identified based on GPS observations.[24] To the north the North American plate is being subducted beneath this microplate along the Puerto Rico Trench. To the south of Puerto Rico the microplate is being thrust southwards over the Caribbean plate along the Muertos Thrust system. On the upper slope and shelf the current style of faulting is extensional with a series of WSW-ENE trending normal faults, such as the Ponce Fault and the Bajo Tasmanian Fault.[25] Several faults are also known to cross parts of the main island.[26]

Earthquake sequence

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Map showing epicenters of M≥5 earthquakes up to February 4, 2020, and active faults on base of a NOAA DEM

The sequence began on December 28, 2019, with a Mw 4.7 earthquake, followed closely by a Mw 5.0 event in the early hours of December 29. Several earthquakes of M <5 occurred over the next few days, followed by a Mw 5.8 event at 10:32 UTC on January 6. The largest event, a Mw 6.4, occurred the next morning, followed by a Mw 5.6 event within 10 minutes and a Mw 5.0 about 15 minutes after that. The Mw 6.4 event had a focal mechanism consistent with normal faulting on a fault trending WSW-ENE.[10][9] A Mw 5.9 event was then logged on January 11 at 12:54 UTC.[27] In the first month of the sequence there were a total of 11 M ≥5 earthquakes and a further 82 in the range M 4–4.9.[9] A Mw 5.4 earthquake occurred on May 2 at 11:13 UTC in the same area as the M 6.4 event and with a similar focal mechanism.[28] As of May 2, after a further two M>4 shocks in the same area, the total number of earthquakes in the sequence of M>3 exceeded 1,000 and there had been 95 of M>4.[29]

Response

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Puerto Rico National Guard soldiers from the 191st Regional Support Group and airmen from the 156th Wing offload and transport the Ohio National Guard's Disaster Relief Bed-down System for use by service members supporting earthquake recovery operations in Puerto Rico.

Puerto Rico governor Wanda Vázquez Garced declared a state of emergency on January 7[30] and mobilized the Puerto Rico National Guard. On January 8, the day after the main quake, the Ponce municipal government registered 1,111 residents in city shelters, "not including hundreds more" who drove to government-designated meeting sites, such as Estadio Paquito Montaner, to sleep in their cars.[31] The parking lot at Auditorio Juan Pachin Vicens was also used as a meeting site.[32] The Bernardino Cordero Bernard Vocational High School was also used as a shelter.[33] The night after the quake, it was estimated that over 40,000 Ponce residents chose to sleep in their cars instead of their homes out of fear of more quakes.[34] By January 13 the number of refugees was estimated at 3,000 Island-wide, but the municipal officials of some local governments believed that figure was probably about right for refugees in just their own single municipalities.[22] Another estimate out the number of refugees at 5,000.[35]

On January 7, the Puerto Rican government made available $130 million in aid.[19] Late January 7, FEMA confirmed that US president Donald Trump had issued a (non-disaster[20]) emergency declaration with a $5 million cap.[21] The $5 million emergency declaration monies were to be spent on emergency services only.[36] On January 12, 2020, Puerto Rico governor Wanda Vázquez Garced made a disbursement of $2 million to each of six municipalities most affected by the quake;[22] the money came from the Puerto Rico State Emergency Reserve Fund.[23] The government set up a central command center, where all pertinent state and municipal dependencies supporting the relief effort were to set up base and coordinate activities at the Polideportivo Frankie Colon in Urbanización Los Caobos, Barrio Bucaná, Ponce. It also became a collection center for items for the earthquake homeless.[37]

By January 14, over 600 soldiers of the Puerto Rico National Guard had set up five tent cities for the homeless, with at least some tents outfitted with air conditioning for the bed-ridden and the elderly, in the municipalities of Guánica, Yauco, Guayanilla, Peñuelas and Ponce, with facilities for over 3,200 refugees.[38]

Effects

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Human losses

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A male resident of Urbanización Jardines del Caribe,[39] in the city of Ponce, lost his life as a direct result of the January 7 quake; additionally, eight other people in the area were injured.[40][41] A woman died of a heart attack in the town of Guayanilla, after a 4.36-magnitude overnight aftershock occurred, on the night of January 9 into January 10.[42] By January 10, two additional people had died of different medical conditions, attributed to the effects of the earthquakes.[43]

Homeless

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Collapsed house in Yauco.
 
One of many impromptu "refugee camps" set up by displaced families in Guánica, one of the towns worst-hit by the earthquakes.

There were refugees in 28 government-sponsored refugee centers in the southern and central Puerto Rico municipalities of Yauco, Guánica, Ponce, Peñuelas, Guayanilla, Utuado, Maricao, Juana Díaz, Adjuntas, Sabana Grande, San Germán, Lajas, Jayuya and Mayagüez.[17] The quakes also caused 28 families in Lares to lose their homes.[44] At least three residential high-rise buildings in Ponce were rendered unusable, leaving the residents homeless.[45]

On January 13, it was reported that some 3,000 homes had been destroyed or significantly damaged.[46] By January 14, the number of homeless region-wide had climbed to 8,000.[47] A 15 January 2020 register of homes rendered uninhabitable listed at least 789 properties.[48] The number of homes with some level of damage was, however, significantly higher. For example, according to its mayor, in the municipality of Yauco alone, there were 3,200 homes with some degree of damage.[49]

Numerous authorities pointed to the emotional toll on the people, particularly on entire families who had been left homeless.[50][51][52]

Physical damage

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Camp improvised by families in Bo. Tibes displaced by the earthquakes

The January 7 quake destroyed numerous structures, including the Agripina Seda Elementary School in Guánica[53] and the Inmaculada Concepción Church in Guayanilla.[54][55] Also severely damaged by the January 7 quake were the La Guancha Recreational and Cultural Complex, which was made inoperable and where 24 establishments had to shut down their operations,[56] and Auditorio Juan Pachín Vicéns.[57] The Moscoso Building of the Ponce City Hall was also damaged.[58]

In Ponce both historic and modern buildings were damaged. Among these were Catedral de Nuestra Señora de Guadalupe, Museo de la Masacre, Iglesia Evangélica (northwest corner of C. Unión and C. Vives); La Gloria store on Paseo Atocha, Hotel Ponce Plaza, Condominium Ponciana on C. Marina, and Darlington Building, also on C. Marina. The damage forced the closing of several downtown streets.[37] There was also damage to Logia Aurora, also on C. Marina.[59] Guanica[60] and Yauco[61] were particularly impacted. The Guanica lighthouse was among the highly damaged buildings in there.[62]

Additional damage throughout Puerto Rico included the Arecibo Observatory, which had already been damaged by Hurricane Maria in 2017.[63][64] Of high concern was the structural damage suffered by school buildings throughout the island. For example, the José Julián Acosta Theater Arts School in San Juan was deemed partially unusable due to structural safety concerns, with classes being moved to the nearby Carnegie Library temporarily.[65]

The January 11 aftershock inflicted further damage. Among the structures damaged by this aftershock were the Ponce Servicios municipal government building,[66] Museo de la Masacre de Ponce,[67] Residencia Armstrong-Poventud,[67] and Casa Vives.[68][69] On January 11, Ponce alone had sustained an estimated $150 million in damage.[8] By 14 January 2020, the vice-mayor of Ponce estimated the cost of the damage so far, one of the most severely hit municipalities, at $1 billion.[70] Financial losses were calculated at US$3.1 billion.[3]

The May 2 M 5.5 earthquake caused further damage to buildings in Ponce. Some power outages were also reported.[71]

Public infrastructure

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An urn fell off (top right corner of the right tower) from one of the towers of the Ponce Cathedral due to quake activity

There was no electricity in Ponce and in most of Puerto Rico on Tuesday, January 7, the day of the 4:24AM earthquake.[33] "More than 250,000" residents island-wide were left without water and another half a million had no power.[33] There were also rock and landslides.[72] Among damage to infrastructure, the 5.9 aftershock quake the morning of January 11 created a crack in a bridge, and was expected to delay restoration of power.[73] The Costa Sur Power Plant, which provides a quarter of the island's power, had sustained "destruction on a grand scale"[43] and estimates said it would take at least a year for repairs to be completed.[18] Consideration was being given the building a brand new plant instead of repairing the damaged plant.[74]

Road damage due to landslides included Puerto Rico highways PR-132, PR-139, and PR-218.[75] PR-2 had landslides in the area of Peñón de Ponce; PR-9, a 4-lane highway under construction, had damage that set back the opening date several months; and PR-52 had damage to its Ponce toll booth plaza. Among bridges damaged were two on PR-127 in Guayanilla, at kilometer markers 9.1 and 10.3.[76]

Aftermath

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On January 17, Puerto Rico governor fired three members of her Cabinet after a group of Puerto Ricans broke into an enormous State warehouse in the La Guancha sector of Barrio Playa in Ponce and found it fully stocked with emergency items including cots, gas stoves, batteries, water, baby formula, diapers that had been stored there since after Hurricane Maria, and which the governor had not been made aware of.[77][78] The governor nominated the Adjutant General of the Puerto Rico National Guard to take over the post of fired Office of Emergency Management Secretary and ordered him to immediately move the items to the refugee centers of the municipalities affected by the earthquake and to distribute them to those people needing them.

The Puerto Rican Government contracted the services of nearly 50 structural engineers to evaluate each public school in the Island for structural stability post-earthquake and to certify them as safe enough to open. Classes were delayed more than 10 days island-wide, longer in the two school regions most intensely hit by the earthquakes.[79][80][81]

In the aftermath of the main quake and its major aftershocks, thousands of residents, including many whose homes had not been damaged, developed seismophobia and continued sleeping outdoors weeks after the earthquake of January 7.[82][83][84]

Scientific activity

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On January 10, USGS and Puerto Rico Seismic Network (PRSN) scientists were working to install six sets of temporary seismometers near the southern coast to augment the existing PRSN instruments.[85]

See also

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References

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  1. ^ López, Alberto; Hughes, K. Stephen; Vanacore, Elizabeth (2020). "Puerto Rico's Winter 2019-2020 Seismic Sequence Leaves the Island on Edge". Temblor. doi:10.32858/temblor.064. S2CID 216332380.
  2. ^ "USGS 6.4 Puerto Rico (tectonic summary)". United States Geological Survey. Retrieved 2020-07-30.
  3. ^ a b c Trafecante, Kate (7 January 2020). "Analyst says earthquakes could cost Puerto Rico's economy up to $3.1 billion". CNN. Retrieved 11 January 2020.
  4. ^ a b "6.4MW Indios, Puerto Rico Earthquake of 07 Jan 2020, 824 UTC". United States Geological Survey. 7 January 2020.
  5. ^ "USGS earthquake catalog". United States Geological Survey.
  6. ^ Torrencial cifra de réplicas agrava la ansiedad en el suroeste: Desde el 28 de diciembre y hasta la madrugada del miércoles, 8 de enero ya se habían registrado al menos 960 sismos en la cercanía de Guánica, Guayanilla y Yauco, según el conteo oficial de la Red Sísmica de Puerto Rico. Jason Rodríguez Grafal. La Perla del Sur. Ponce, Puerto Rico. 9 January 2020. Retrieved 4 February 2020.
  7. ^ Puerto Rico residents fear aftershocks after deadly 6.4 magnitude earthquake. David Begnaud. CBS NEWS. January 7, 2020. Retrieved 31 January 2020.
  8. ^ a b c Magnitude 5.9 earthquake rocks Puerto Rico and causes landslide in Peñuelas. Grace Hauck. USA Today. 11 January 2020. Retrieved 14 January 2020.
  9. ^ a b c ANSS (January 31, 2019). "Search results". Retrieved January 31, 2019.
  10. ^ a b ANSS. "Puerto Rico 2020: M 6.4 – 8 km S of Indios, Puerto Rico". Comprehensive Catalog. U.S. Geological Survey. Retrieved January 7, 2020.
  11. ^ "INFORME DE LA ACTIVIDAD SÍSMICA EN LA REGIÓN DE PUERTO RICO E ISLAS VÍRGENES DURANTE EL MES DE MARZO DE 2022" (PDF) (in Spanish). Retrieved 2022-08-27. Este temblor fuerte, con profundidad de 7 km, tuvo una intensidad máxima de VIII en Guánica, Puerto Rico y produjo daños mayores a través de Puerto Rico. [This strong tremor, with a depth of 7 km, had a maximum intensity of VIII in Guánica, Puerto Rico and produced major damage throughout Puerto Rico.]
  12. ^ "Confirman la primera muerte por el temblor en Ponce". El Nuevo Dia (in Spanish). 2020-01-07. Retrieved 2020-01-07.
  13. ^ "Alcaldesa de Ponce reporta 8 heridos por el temblor". Primera Hora. 2020-01-07. Retrieved 2020-01-07.
  14. ^ Elassar, Alaa (January 7, 2020). "Punta Ventana, one of Puerto Rico's natural wonders, has been destroyed by an earthquake". CNN. Retrieved January 7, 2020.
  15. ^ Experts seek answers behind constant quakes in Puerto Rico. Danica Coto. The Associated Press. 14 January 2020. Retrieved 14 January 2020.
  16. ^ Cifra parcial de refugiados asciende a más de 8,000. Osman Pérez Méndez Primera Hora. 14 January 2020. Retrieved 14 January 2020.
  17. ^ a b 4,924 personas ubicadas en 28 refugios. Accessed 14 January 2020.
  18. ^ a b Calfas, Talal Ansari, Arian Campo-Flores and Jennifer (January 9, 2020). "Puerto Rico Power Plant Sustains 'Destruction on a Grand Scale'". The Wall Street Journal.{{cite news}}: CS1 maint: multiple names: authors list (link)
  19. ^ a b Barajas, Angela (7 January 2020). "Puerto Rico governor says almost 300,000 homes and businesses are without water service". CNN. Retrieved 11 January 2020.
  20. ^ a b La declaración de emergencia de Donald Trump tiene un límite de $5 millones: FEMA confirma que en espera de una declaración de desastre, su intervención tiene por el momento un tope financiero. El Nuevo Dia. Guaynabo, Puerto Rico. 13 January 2020. Retrieved 13 January 2020.
  21. ^ a b Helmore, Edward (8 Jan 2020). "Much of Puerto Rico still without power after worst earthquake in a century". The Guardian. Retrieved 11 January 2020.
  22. ^ a b c Cerca de 5,000 refugiados a casi una semana del terremoto del 7 de enero. Agencia EFE. 13 January 2020. Retrieved 13 January 2020.
  23. ^ a b Wanda Vázquez entrega cheque de $2 millones a municipios del sur afectados por el terremoto: Los pueblos de Ponce, Yauco, Guánica, Guayanilla, Peñuelas y Utuado podrán usar los fondos inmediatamente. Accessed 13 January 2020.
  24. ^ "Earthquakes and Tsunamis in Puerto Rico and the U.S. Virgin Islands" (PDF). United States Geological Survey. April 2001. Retrieved 11 January 2020. USGS Fact Sheet FS–141–00
  25. ^ Bruña, J.L.G.; ten Brink, U.S.; Muñoz-Martín, A.; Carbó-Gorosabel, A.; Estrada, P.L. (2015). "Shallower structure and geomorphology of the southern Puerto Rico offshore margin". Marine and Petroleum Geology. 67: 30–56. Bibcode:2015MarPG..67...30G. doi:10.1016/j.marpetgeo.2015.04.014.
  26. ^ "Puerto Rico's Winter 2019-2020 Seismic Sequence Leaves the Island On Edge". Temblor. temblor.net. 7 January 2020. Retrieved 11 January 2020. Prentice and Mann (2005)
  27. ^ "M 5.9 – 13 km SE of Guanica, Puerto Rico". United States Geological Survey. Retrieved January 11, 2020.
  28. ^ ANSS. "Puerto Rico 2020b: M 5.4 – 11 km SSE of Tallaboa, Puerto Rico". Comprehensive Catalog. U.S. Geological Survey. Retrieved May 2, 2020.
  29. ^ "Magnitude 5.4 Earthquake Felt in Puerto Rico". United States Geological Survey. May 2, 2020. Retrieved May 3, 2020.
  30. ^ Figueroa Rosa, Bárbara J. (January 7, 2020). "Gobernadora declara estado de emergencia tras terremotos". Primera Hora (in Spanish). Retrieved January 13, 2020.
  31. ^ Figueroa Cancel, Alex (8 January 2020). "Sobre mil personas continúan refugiadas en Ponce". El Nuevo Dia (in Spanish). Retrieved 11 January 2020.
  32. ^ Ayala, Edmy; Mazzei, Patricia; Robles, Frances; Garcia, Sandra E. (7 January 2020). "'Scarier' Than Hurricane Maria: A Deadly Earthquake Terrifies Puerto Rico". The New York Times. Retrieved 11 January 2020.
  33. ^ a b c "Sobre mil personas continúan refugiadas en Ponce". El Nuevo Dia (in Spanish). 8 January 2020. Retrieved 11 January 2020.
  34. ^ "María "Mayita" Meléndez prevé daños multimillonarios en Ponce". El Nuevo Dia (in Spanish). 8 January 2020. Retrieved 11 January 2020.
  35. ^ Barbra Streisand comenta el bloqueo de Trump a los fondos para Puerto Rico. Miguel Diaz. EsNoticia. Ponce, Puerto Rico. 13 January 2020. Retrieved 13 January 2020.
  36. ^ Hit by devastating earthquakes, Puerto Rico still waiting on billions for hurricane relief: Pelosi calls on administration to ‘cease and desist’ its ‘unlawful’ withholding of funds. Erica Werner. The Washington Post. 9 January 2020. 12 January 2020.
  37. ^ a b COE en Ponce servirá como centro de acopio para recibir donaciones. Archived 2020-01-14 at the Wayback Machine Cyber News. 12 January 2020. Retrieved 22 January 2020.
  38. ^ Abrió en Guánica primer campamento militar para víctimas del terremoto. Bárbara J. Figueroa Rosa 14 January 2020. Retrieved 22 January 2020.
  39. ^ Grafal, Jason Rodríguez (9 January 2020). "Torrencial cifra de réplicas agrava la ansiedad en el suroeste". La Perla del Sur (in Mexican Spanish). Retrieved 11 January 2020.
  40. ^ Erdman, Jonathan; Brackett, Ron (7 January 2020). "Hundreds of Thousands Could Be Without Power for a Year After Puerto Rico Earthquakes". The Weather Channel. Retrieved 11 January 2020.
  41. ^ 6.4 magnitude earthquake strikes Puerto Rico, injuring eight people: Strong quake followed by an aftershock measuring 6.0, Heavy damage in some areas. The Guardian. Associated Press. 7 January 2020. Retrieved 9 January 2020.
  42. ^ Puerto Ricans in earthquake shelters refuse to go home. Dánica Coto. Associated Press. 10 January 2020. Retrieved 12 January 2020.
  43. ^ a b As Lights Flicker On After Puerto Rico Earthquake, Officials Say 3 More Have Died. Archived 2020-09-23 at the Wayback Machine The New York Times. 10 January 2020. Retrieved 13 January 2020.
  44. ^ "Refugiadas 28 familias en Lares tras temblor 5.9 del sábado". Primera Hora (in Spanish). January 12, 2020.
  45. ^ Tres condominios en Ponce quedaron inhabitables por los terremotos. Michelle Estrada Torres. Voces del Sur. Ponce, Puerto Rico. 14 January 2020. Retrieved 22 January 2020.
  46. ^ Cerca de 5,000 refugiados a casi una semana del terremoto del 7 de enero. Dánica Coto, Associated Press. Agencia EFE. 13 January 2020. Retrieved 13 January 2020.
  47. ^ Cifra parcial de refugiados asciende a más de 8,000: El secretario de Estado admitió que “no tenemos el número de personas durmiendo en las aceras” y podrían ser miles más. Osman Pérez Méndez. 14 January 2020. Retrieved 22 January 2020.
  48. ^ Al menos 789 casas afectadas por los temblores de tierra. Cyber News. Retrieved 22 January 2020.
  49. ^ Sismos en el sur: Pasan terrible factura emocional y estructural en Yauco y Ponce: El alcalde de Yauco, Ángel Luis Torres Ortiz, indicó que unas 3,200 unidades de vivienda en su municipio sufrieron daños a raíz de la actividad sismica de la pasada semana. Jason Rodríguez Grafal. 15 January 2020. Retrieved 22 January 2020.
  50. ^ El mar se apodera de comunidad en Guayanilla. 22 January 2020. Retrieved 22 January 2020.
  51. ^ Puerto Ricans in Central Florida feel the emotional toll of Puerto Rico earthquake. Cecilia Figueroa. El Sentinel Orlando. 7 January 2020. Retrieved 22 January 2020.
  52. ^ Puerto Rico reels under successive earthquakes; Catholic church damaged. Dennis Sadowski. Angelus. Catholic News Service. 7 January 2020. Retrieved 22 January 2020.
  53. ^ "Desastre sísmico en escuela elemental de Guánica". El Nuevo Dia (in Spanish). 7 January 2020. Retrieved 11 January 2020.
  54. ^ "Así quedó la Parroquia Inmaculada Concepción de Guayanilla tras terremoto". El Nuevo Dia (in Spanish). 7 January 2020. Retrieved 11 January 2020.
  55. ^ Hundreds of Thousands Could Be Without Power for a Year After Puerto Rico Earthquakes. Jonathan Erdman and Ron Brackett. Slide 59 of 63. January 09 2020. Retrieved 22 January 2020.
  56. ^ La Guancha queda inoperable luego de los terremotos. Primera Hora. 8 January 2020. Retrieved 10 January 2020.
  57. ^ Daños en el “Pachín” Vicéns en Ponce. Michelle Estrada Torres. Voces del Sur. Ponce, Puerto Rico. 7 January 2020. Retrieved 11 January 2020.
  58. ^ María "Mayita" Meléndez prevé daños multimillonarios en Ponce: La alcaldesa estimó que sobre 40,000 personas no duerme en sus casas y prefiere pernoctar en sus autos por miedo a los terremotos. Alex Figueroa Cancel. El Nuevo Dia. 8 January 2020. Retrieved 13 January 2020.
  59. ^ Hundreds of Thousands Could Be Without Power for a Year After Puerto Rico Earthquakes. Jonathan Erdman and Ron Brackett. Slide 26 of 63. 9 January 2020. Retrieved 22 January 2020.
  60. ^ Hundreds of Thousands Could Be Without Power for a Year After Puerto Rico Earthquakes. Jonathan Erdman and Ron Brackett. Slide 12 of 63. 9 January 2020. Retrieved 22 January 2020.
  61. ^ Hundreds of Thousands Could Be Without Power for a Year After Puerto Rico Earthquakes. Jonathan Erdman and Ron Brackett. 9 January 2020. Slide 23 of 63. Retrieved 22 January 2020.
  62. ^ Hundreds of Thousands Could Be Without Power for a Year After Puerto Rico Earthquakes. Jonathan Erdman and Ron Brackett. Slide 49 of 63. 9 January 2020. Retrieved 22 January 2020.
  63. ^ Clery, Daniel (November 19, 2020). "Famed Arecibo telescope, on the brink of collapse, will be dismantled". Science (journal). AAAS. Archived from the original on November 19, 2020. Retrieved November 19, 2020.
  64. ^ Witze, A (November 2020). "Legendary Arecibo telescope will close forever – scientists are reeling". Nature (journal). 587 (7835): 529–530. Bibcode:2020Natur.587..529W. doi:10.1038/d41586-020-03270-9. PMID 33214727.
  65. ^ "San Juan anuncia la conversión temporal de la biblioteca Carnegie como escuela" [San Juan Announces Temporary Conversion of Carnegie Library to a School]. El Nuevo Día (in Spanish). 2020-02-22. Archived from the original on 2021-07-02. Retrieved 2021-07-02.
  66. ^ Cerrado el casco urbano de Ponce por daños en casas y otras estructuras. Michelle Estrada Torres. Voces del Sur. Ponce, Puerto Rico. 11 January 2020. Retrieved 11 January 2020.
  67. ^ a b Serios daños en museos de Ponce. Sara Marrero Caban. Voces del Sur. Ponce, Puerto Rico. 11 January 2020. Retrieved 11 January 2020.
  68. ^ Casa Vives. Voces del Sur. Ponce, Puerto Rico. Retrieved 11 January 2020.
  69. ^ Terremoto afecta Casa Vives en Ponce: El terremoto de 5.9 ocurrido el 11 de enero de 2020 dañó parte de la histórica Casa Vives, que en noviembre de 2019 se había convertido en el restaurante Velada. Sus dueños detallan los daños y comentan sobre el futuro del negocio. Voces del Sur. Ponce, Puerto Rico. 11 January 2020. Retrieved 11 January 2020.
  70. ^ Ponce estima en cerca de $1,000 millones sus pérdidas por los temblores. Primera Hora. 14 January 2020. Retrieved 22 January 2020.
  71. ^ Moshtaghian, Artemis; Croft, Jay (May 2, 2020). "Earthquake of 5.5 magnitude rattles Puerto Rico, damages buildings in city of Ponce". CNN. Retrieved May 2, 2020.
  72. ^ Acevedo, Nicole; Kesslen, Ben (7 January 2020). "State of emergency in Puerto Rico after deadly earthquake". NBC News. Retrieved 11 January 2020.
  73. ^ Mazzei, Patricia (11 January 2020). "New 5.9 Earthquake Rattles Puerto Rico, Causing More Power Outages". The New York Times. Retrieved 11 January 2020.
  74. ^ La AEE contempla construir una nueva planta en vez de reparar Costa Sur: La decisión dependerá de los daños por los sismos, pero a la corporación pública le preocupa la vulnerabilidad del terreno y ubicación. Alex Figueroa Cancel. 15 January 2020. Retrieved 22 January 2020.
  75. ^ Clausurados tres condominios en Ponce y otros ocho en evaluación. Miguel Diaz. 14 January 2020. Retrieved 22 January 2020.
  76. ^ Por demolición del peaje: Tardará dos semanas la reapertura de la PR-52 en Ponce: La Autoridad de Carreteras y Transportación trabaja en la construcción de un carril central temporero en el tramo de la PR-2 en el sector Las Cucharas de Ponce, que ha sido impactado por frecuentes derrumbes. Archived 2020-02-05 at the Wayback Machine Jason Rodríguez Grafal. La Perla del Sur. Ponce, Puerto Rico. 15 January 2020. Retrieved 22 January 2020.
  77. ^ Puerto Rico governor fires emergency director after aid is found sitting in warehouse. Audrey McNamara. CBS News. 19 January 2020. Retrieved 22 January 2020.
  78. ^ Puerto Rico governor fires 2 more officials after emergency supplies found sitting in warehouse. Peter Martinez and Audrey McNamara. CBS News. 19 January 2020. Retrieved 22 January 2020.
  79. ^ Colegio de Ingenieros: 500 escuelas podrían colapsar en un terremoto. Osman Pérez Méndez. Primera Hora. 8 January 2020. Retrieved 22 January 2020.
  80. ^ Puerto Rico reabrirá escuelas públicas tras sismo de 6,4: los ingenieros habían inspeccionado 561 de las 856 escuelas públicas, y hallaron que 9% eran inseguras como resultado de los daños causados por terremotos. Associated Press. 17 January 2020. Retrieved 22 January 2020.
  81. ^ Tan solo 500 escuelas están reforzadas contra terremotos en Puerto Rico, según el Colegio de Ingenieros y Agrimensores: Esta autodenominada corporación cuasi-pública sin fines de lucro también denunció que todavía, en Puerto Rico, hay escuelas con un diseño de columnas cortas, en las que se ha comprobado hay un peligro inminente de colapso en caso de terremoto. Univision. 8 January 2020. Retrieved 22 January 2020.
  82. ^ Hundreds take shelter in Puerto Rico in fear of more tremors. News 12 Bronx. 22 January 2020. Retrieved 22 January 2020.
  83. ^ Earthquakes Trigger Anxiety In Puerto Rico: 'There's No Way To Prepare'. Adrian Florido. 11 January 2020. Retrieved 22 January 2020.
  84. ^ People are living in fear as earthquakes and aftershocks in Puerto Rico continue.. Denise Oliver Velez. 11 January 2020. Retrieved 22 January 2020.
  85. ^ "Magnitude 6.4 Earthquake in Puerto Rico -- Afternoon Update on January 10". United States Geological Survey. 10 January 2020. Retrieved 11 January 2020.
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