2017 Surigao earthquake
{{Short description|Earthquake in the Philippines}}
{{Use Philippine English|date=March 2023}}
{{Use mdy dates|date=March 2023}}
{{Infobox earthquake
|title = 2017 Surigao earthquake
|timestamp = 2017-02-10 14:03:43
|anss-url = us20008ixa
|isc-event = 610208008
|image =
|image alt =
|imagecaption =
|map =
|map alt =
|image name =
| map2 = {{Location map many | Mindanao#Philippines | relief=1
| label =
| lat=9.80
| long=125.35
| mark = Bullseye1.png
| marksize = 50
| position = bottom
| width = 260
| float = none
| caption = }}
|mapsize =
|caption =
|local-date = {{Start date|2017|02|10}}
|local-time = 22:03:42 PST
|duration =
|magnitude = 6.7 Ms
6.5 {{M|w|link=y}}
|depth = 15.0 km (9.3 mi)
|location ={{Coord|9.907|N|125.452|E}}
|type =
|countries affected = Philippines
|affected = {{hlist|Surigao City|Basilisa, Dinagat Islands}}
|damage = {{Philippine peso|665 million+}}
|intensity = {{ubl|{{MMI|8}}|{{PEIS|7}}}}
|PGA =
|tsunami = No
|landslide =
|foreshocks =
|aftershocks = at least 140
|casualties = 8 dead
200 injured{{cite news|url=https://www.foxnews.com/world/aftershocks-rattle-survivors-after-philippine-quake-kills-8|title=Aftershocks rattle survivors after Philippine quake kills 8|date=February 12, 2017|publisher=Fox News|access-date=February 12, 2017}}
}}
The 2017 Surigao earthquake occurred on February 10, 2017, at 10:03 PM (PST), with a surface-wave magnitude of 6.7 off the coast of Surigao del Norte in the Philippines. According to the PHIVOLCS earthquake intensity scale the earthquake was an Intensity VII (Destructive) earthquake at maximum.{{Cite web|title=M 6.5 – 11 km N of Mabua, Philippines|url=https://earthquake.usgs.gov/earthquakes/eventpage/us20008ixa/executive#executive|url-status=live|access-date=January 23, 2022|publisher=United States Geological Survey|archive-url=https://web.archive.org/web/20220123224513/https://earthquake.usgs.gov/earthquakes/eventpage/us20008ixa/executive |archive-date=January 23, 2022 }}{{cite news| work=SunStar| url=http://www.sunstar.com.ph/cebu/local-news/2017/02/11/magnitude-67-quake-hits-surigao-city-525181| title=Magnitude 6.7 quake hits Surigao City| date=February 12, 2017| access-date=February 11, 2017| archive-date=February 11, 2017| archive-url=https://web.archive.org/web/20170211235608/http://www.sunstar.com.ph/cebu/local-news/2017/02/11/magnitude-67-quake-hits-surigao-city-525181| url-status=dead}} In the past Surigao province has been hit by a magnitude 7.2 tremor in both 1879 and 1893.{{citation needed|date=February 2017}}
Tectonic setting
The Philippine Islands is situated in a highly deformed zone between the convergent boundary of the Eurasian and Philippine Sea plates, known as the Philippine Mobile Belt. Along the east, the Philippine Sea plate subducts beneath the islands at the Philippine and East Luzon trenches. Major subduction complexes are also active along the southwestern coast of Mindanao at the Cotabato Trench and along the Manila Trench of the west Luzon.
Running through the Philippine Mobile Belt is the Philippine fault system; a large 1,200-kilometer-long, highly segmented strike-slip fault system. This left-lateral system of faults runs from southeastern Mindanao to northwestern Luzon. Strike-slip deformation within the Philippine Mobile Belt occurs as a result of oblique subduction of the Philippine Sea plate, where the Philippine Fault System accommodates much of it.{{cite journal |author1=Mario A. Aurelio |title=Shear partitioning in the Philippines: Constraints from Philippine Fault and global positioning system data |journal=Island Arc |date=2000 |volume=9 |issue=4 |pages=584–597 |doi=10.1111/j.1440-1738.2000.00304.x |url=https://onlinelibrary.wiley.com/doi/10.1111/j.1440-1738.2000.00304.x |publisher=Wiley Online Library|bibcode=2000IsArc...9..584A |s2cid=129633652 }} The fault is seismically active and ruptures periodically in large earthquakes. Among the largest are the 1990 Luzon and 1973 Ragay Gulf earthquakes.
Earthquake
The earthquake was recorded by the Philippine Institute of Volcanology and Seismology (PHIVOLCS) on February 10, 2017, at 10:03:42 PM (UTC+8). According to PHIVOLCS, the epicenter of the 6.7 magnitude-earthquake was at {{coord|9.80|N|125.35|E|display=inline, title}} or 16 kilometers, north west of Surigao City. The earthquake was tectonic of origin. The most affected area in terms of the PHIVOLCS earthquake intensity scale was Surigao City, which experienced an intensity of Intensity VII (Destructive).{{cite web|title=PHILVOLCS – Earthquake Information No.4 (10 Feb 2017 – 10:03:42 PM)|url=http://www.phivolcs.dost.gov.ph/html/update_SOEPD/2017_Earthquake_Information/February/2017_0210_1403_B4F.html|publisher=Philippine Institute of Volcanology and Seismology|access-date=February 12, 2017|date=February 11, 2017|archive-date=February 13, 2017|archive-url=https://web.archive.org/web/20170213001211/http://www.phivolcs.dost.gov.ph/html/update_SOEPD/2017_Earthquake_Information/February/2017_0210_1403_B4F.html|url-status=dead}} The United States Geological Survey reported the earthquake as having a moment magnitude of 6.5.
| class="wikitable" style="margin-left: auto; margin-right: auto; text-align:center; font-size:90%;" |
| Intensity
Scale !Location |
|---|
| style="background-color: #fd0;" |VII |
| style="background-color: #ff0;" |VI |
| style="background-color: #7df894;" |V
|Mandaue City, San Ricardo, Limasawa and San Francisco, Southern Leyte. |
| style="background-color: #8ff;" |IV
|Hinunangan, Southern Leyte and Butuan City. |
| style="background-color: #99f;" |III
|Hibok-hibok, Camiguin, Tolosa and Tacloban, Leyte, Bislig City, Gingoog City, Misamis Oriental. |
| style="background-color: #bfccff;" |II
|Cagayan de Oro City, Talocogon, Agusan del Sur, Dumaguete City, Cebu City |
| class="wikitable" style="margin-left: auto; margin-right: auto; text-align:center; font-size:90%;"
! colspan="2" |Aftershock (Magnitude 5.9)[https://www.youtube.com/watch?v=l202wW93IkQ TV Patrol: Surigao City niyanig ng magnitude 5.9 na lindol; 1 patay, 35 sugatan.] (In Tagalog) ABS CBN News March 6, 2017 |
| Intensity
Scale !Location |
|---|
| style="background-color: #ff0;" |VI |
| style="background-color: #8ff;" |IV |
| style="background-color: #99f;" |III |
| style="background-color: #bfccff;" |II
|Gen. Luna, Surigao Del Norte; Ormoc City |
| colspan="2" |Instrumental Intensities |
| style="background-color: #fd0;" |VII |
| I |
The Pacific Tsunami Warning Center issued no tsunami warning following the earthquake.{{cite news|title=Magnitude 6.7 quake hits Surigao City|url=http://www.sunstar.com.ph/cebu/local-news/2017/02/12/magnitude-67-quake-hits-surigao-city-525181|access-date=February 12, 2017|work=SunStar Cebu|date=February 10, 2017|archive-date=February 12, 2017|archive-url=https://web.archive.org/web/20170212123800/http://www.sunstar.com.ph/cebu/local-news/2017/02/12/magnitude-67-quake-hits-surigao-city-525181|url-status=dead}}
Impact
According to the Department of Social Welfare and Development, at least 300 houses in Surigao del Norte were damaged following the earthquake.{{cite news|last1=Gamil|first1=Jaymee|title=DSWD: More than 300 houses damaged due to Surigao earthquake|url=http://newsinfo.inquirer.net/870580/dswd-more-than-300-houses-damaged-due-to-surigao-earthquake|access-date=February 11, 2017|newspaper=Philippine Daily Inquirer|date=February 11, 2017}} Seven bridges collapsed, isolating San Francisco. At least eleven towns were affected, experiencing power outages.{{cite news|url=http://cnnphilippines.com/news/2017/02/11/Surigao-earthquake-casualties.html|title=6 dead, dozens hurt from magnitude-6.7 Surigao quake|publisher=CNN Philippines|date=February 11, 2017|access-date=February 11, 2017|archive-date=September 10, 2020|archive-url=https://web.archive.org/web/20200910115950/https://cnnphilippines.com/news/2017/02/11/Surigao-earthquake-casualties.html|url-status=dead}}
The Provincial Disaster Risk Reduction and Management Council of Surigao del Norte projected that the cost of damage to property and infrastructure was at least {{Philippine peso|665 million}}.{{cite news|title=Surigao quake survivors refuse to go home|url=http://newsinfo.inquirer.net/871543/surigao-quake-survivors-refuse-to-go-home|access-date=February 21, 2017|newspaper=Philippine Daily Inquirer|date=February 15, 2017}}
Eight people died in the earthquake while 202 others were injured.{{cite news|url=https://www.philstar.com/headlines/2017/02/14/1671793/surigao-quake-death-toll-climbs-8|title=Surigao quake death toll climbs to 8|work=The Philippine Star|date=February 14, 2017|access-date=May 20, 2023}}
Aftermath
On February 11, 2017, the government of Surigao City declared a state of calamity.{{cite news|title=State of calamity declared in quake-hit Surigao|url=http://news.abs-cbn.com/news/02/11/17/state-of-calamity-declared-in-quake-hit-surigao|access-date=February 11, 2017|work=ABS-CBN News|date=February 11, 2017}}
The Civil Aviation Authority of the Philippines suspended all flights to and from Surigao City due to the damage sustained by the city's airport runway.
The Philippine national government, through presidential spokesman Ernesto Abella, assured the public that the government would provide aid.{{cite news|title=Gov't assures aid for victims of the Surigao earthquake|url=http://newsinfo.inquirer.net/870578/govt-assures-aid-for-victims-of-surigao-earthquake|access-date=February 11, 2017|newspaper=Philippine Daily Inquirer|agency=Agence France-Presse|date=February 11, 2017}}
By the afternoon of February 14, 2017, there were at least 140 reported aftershocks recorded by PHIVOLCS.
On March 5, 2017, an aftershock of magnitude 5.9 occurred; one person died of a heart attack, and 29 others were injured, while some walls collapsed.{{cite news|author=Samhati Bhattacharjya|title=Philippine: Earthquake-stricken city Surigao experiences aftershock of 5.9-magnitude|newspaper=International Business Times|url=http://www.ibtimes.sg/philippine-earthquake-stricken-city-surigao-experiences-aftershock-5-9-magnitude-8107|access-date=March 5, 2017|date=March 5, 2017}}
See also
{{Portal|Earth sciences}}
References
{{reflist}}
External links
- {{EQ-isc-link|610208008}}
{{Earthquakes in 2017}}
{{Earthquakes in the Philippines}}
{{DEFAULTSORT:Surigao earthquake, 2017}}
Category:2017 disasters in the Philippines
Category:Earthquakes in the Philippines
Category:History of Surigao del Norte
Category:History of Dinagat Islands