Asst. Prof @Official_UPD. Mostly about earthquakes and tectonic geodesy, and different bits of geology. DPhil (Oxon). MS, BS (UPD). Views are my own.
Quezon City, PH
Joined October 2016
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Earthquakes are unpredictable, so we study how they manifest in our surroundings to understand their nature and, most especially, to help improve society's resilience against them. #IAmAGeoscientist who looks for evidence of EQs past and present. #EarthDay18
📷from 🇵🇭 & 🇰🇬
In time for creepy season. Further improving our understanding of the slip mechanics of the Philippine Fault in Leyte 👏👏🤓
New paper out! 🛰️
“Interactions of aseismic and seismic slips of the Philippine Fault on Leyte Island revealed by InSAR and GNSS time-series” (Okur et al., 2025)
Reveals decadal changes in fault creep and its links to earthquakes.
👉 doi.org/10.1186/s40645-025-0…
The southern Philippines, including Mindanao, is the most seismically active part of the country. The reason mainly is geology and tectonics-- fast convergence rate and many tectonic structures (onshore, offshore, and a very deep subducted plate). #EarthquakePh #LinogPH
#EarthquakeReport for M7.4 #Earthquake #Lindol offshore of the #Philippines
Reverse (Compressional) earthquake mechanism
Probably on megathrust subduction zone fault
Possible local #Tsunami
Tectonic background in 2023 report earthjay.com/?p=11611
earthquake.usgs.gov/earthqua…
JD Dianala retweeted
A chemical spill was confirmed at San Pedro College in Davao City following the magnitude 7.4 earthquake that struck off Davao Oriental on Friday, October 10. The Bureau of Fire Protection’s Special Rescue Force deploys personnel to contain the spill and ensure public safety. Photos from Bureau of Fire Protection
JD Dianala retweeted
READ: As a result of the strong earthquake this morning, @UPMindanao has advised a shift to asynchornous mode for classes and work from home arrangements until October 13, Monday.
Please read the advisory in full here: facebook.com/UPMindanao/post…
JD Dianala retweeted
#EarthquakeReport for M7.4 #Earthquake #Lindol offshore of the #Philippines
Reverse (Compressional) earthquake mechanism
Probably on megathrust subduction zone fault
Possible local #Tsunami
Tectonic background in 2023 report earthjay.com/?p=11611
earthquake.usgs.gov/earthqua…
JD Dianala retweeted
WATCH: Fire broke out inside a mall in Consolacion town, northern Cebu after a 6.7-magnitude earthquake rocked the island province on Tuesday, Sept. 30. Fortunately, the fire was quickly put out. #CDNDigital
🎥: Contributed
JD Dianala retweeted
Five people have been confirmed dead in San Remigio following the 6.9-magnitude earthquake, according to the San Remigio Municipal Police Station.
The casualties include one BFP personnel, three PCG personnel, and one child. Authorities reported that the BFP and PCG personnel died when a local complex collapsed due to the earthquake.
As of this report, two additional individuals remain unaccounted for, one inside the collapsed complex and another in Barangay Poblacion.
In Bogo City, there are already 13 confirmed deaths. | via DPP/The Freeman
JD Dianala retweeted
LOOK: A fast-food chain in Bogo City, Cebu, collapsed after a 6.7-magnitude earthquake struck the province on Tuesday night, Sept. 30.
📸 Helen Domingo Macats-Ppto / Facebook
JD Dianala retweeted
KEEP SAFE 🙏
WATCH: Situation at the Colon Night Market in Cebu City following the magnitude 6.7 earthquake on Tuesday night.
Intensity VI was recorded in Cebu City, while the epicenter was located 17 kilometers northeast of Bogo City, according to Phivolcs. Aftershocks and damage are expected. | via The Freeman
Not somewhere we've been paying as much attention to for active tectonics until recently, so this will take some unraveling as more data comes in #EarthquakePH
#EarthquakePH #EarthquakeCebu
#iFelt_CebuEarthquake
Earthquake Information No.1
Date and Time: 30 September 2025 - 09:59 PM
Magnitude = 6.7
Depth = 010 km
Location = 11.09°N, 124.13°E - 017 km N 73° E of City Of Bogo (Cebu)
earthquake.phivolcs.dost.gov…
Warning for possible minor tusnami
xitter.cf/ABSCBNNews/status/1973…
Despite having a strike-slip mechanism, the types of faults that don't usually generate large tsunamis, there have been cases of tsunamis following strike-slip earthquakes in archipelagos (e.g., 1994 Mindoro, Philippines; 2018 Palu, Indonesia)
pvcmcet-swift.phivolcs.dost.…
JD Dianala retweeted
New paper!
It's about using SAR and optical satellite remote sensing to map earthquake damage in realistic disaster response conditions:
nature.com/articles/s43247-0…
"Earthquake damage mapped more comprehensively and accurately by radar satellites than optical imagery"
Are you a driven scientist/coder who has experience or interest in remote sensing? Want to use your skills in earthquake research? Join the team of the LInOG Project at the University of the Philippines! More details here: docs.google.com/document/d/1…
JD Dianala retweeted
A longer higher res version of the Kamchatka tsunami
#earthquake
JD Dianala retweeted
: From @InfoHumasBMKG - Some regions in #Indonesia that may be hit by the #TSUNAMI caused by the M8.7-8.8 #earthquake in #Kamchatka #Russia. People living in those areas are advised to stay alert and evacuate if the situation is getting worse.
xitter.cf/InfoHumasBMKG/status/1…
GEMPABUMI M8.7 DI PESISIR TIMUR KAMCHATKA, RUSIA, DAN BERPOTENSI TSUNAMI DI WILAYAH INDONESIA
Kejadian dan Parameter Gempabumi:
Pada hari Rabu, 30 Juli 2025, pukul 06:24:50 WIB di dekat pesisir timur Kamchatka, Rusia diguncang gempabumi tektonik. Hasil analisis parameter update menunjukkan gempabumi ini memiliki magnitudo M8,7 Episenter gempabumi terletak pada koordinat 52,51° LU; 160,26° BT pada kedalaman 18 km.
Jenis dan Mekanisme Gempabumi:
Berdasarkan lokasi episenter dan kedalaman hiposenternya, gempabumi ini merupakan jenis gempabumi dangkal akibat aktivitas subduksi lempeng pada Palung Kurile-Kamchatka ( _Kurile-Kamchatka Trench_ ). Gempabumi ini memiliki mekanisme naik ( _thrust fault_ ).
Dampak Gempabumi:
Berdasarkan laporan PTWC gempabumi ini berpotensi tsunami di wilayah Rusia, Jepang, Alaska, Filipina, Hawaii, dan Guam.
Hasil analisis Badan Meteorologi Klimatologi dan Geofisika (BMKG), gempa tersebut berpotensi menimbulkan tsunami di wilayah Indonesia dengan status Waspada (ketinggian Tsunami kurang dari 0.5m), di wilayah :
1. Talaud (ETA 14:52:24 WITA)
2. Kota Gorontalo (ETA 16:39:54 WITA)
3. Halmahera Utara (ETA 16:04:24 WIT)
4. Manokwari (ETA 16:08:54 WIT)
5. Rajaampat (ETA 16:18:54 WIT)
6. Biaknumfor (ETA 16:21:54 WIT)
7. Supiori (ETA 16:21:54 WIT)
8. Sorong bagian Utara (ETA 16:24:54 WIT)
9. Jayapura (ETA 16:30:24 WIT)
10. Sarmi (ETA 16:30:24 WIT)
Oleh karena itu, kepada masyarakat pesisir di wilayah tersebut untuk tetap tenang dan menjauhi pantai. Hingga saat ini, belum ada laporan mengenai kerusakan bangunan sebagai dampak gempabumi tersebut.
Gempabumi Susulan
Hingga pukul 08.30 WIB, berdasarkan hasil monitoring menunjukkan adanya 7 aktivitas gempabumi susulan ( _aftershock_ ), dengan magnitudo terbesar M6.9 dan magnitudo terkecil M5.4.
Pastikan informasi resmi hanya bersumber dari BMKG melalui kanal komunikasi resmi yang telah terverifikasi (Instagram/Twitter @infoBMKG), website (bmkg.go.id atau inatews.bmkg.go.id), telegram channel (t.me/InaTEWS_BMKG), atau melalui Mobile Apps (IOS dan Android): wrs-bmkg atau infobmkg.
Jakarta, 30 Juli 2025
Direktur Gempabumi dan Tsunami BMKG
Dr. DARYONO, S.Si., M.Si
