Deo

The postings on this site are my own and does not represent DOST-PHIVOLCS positions, strategies and opinions.

Tomita, F. Re-evaluation of the interseismic slip deficit rates along the Kamchatka subduction zone. Earth Planets Space 78, 41 (2026). doi.org/10.1186/s40623…

Ayon sa bagong pag-aaral ni Deo Carlo Llamas, isang geologist sa Philippine Institute of Volcanology and Seismology (PHIVOLCS) at Mario Aurelio, isang propesor sa University of the Philippines Diliman - College of Science - National Institute of Geological Sciences (UPD-CS NIGS), na ilang residente sa bayan ng Dimasalang, Palanas, at Cataingan sa Masbate Island ang nakatira malapit sa fault line. Tumama ang magnitude 6.2 na lindol sa Masbate Island noong Pebrero 15, 2003. At 17 taon matapos ang insidente, ito ay sinundan ng isang magnitude 6.6 na lindol sa parehong fault sa isla noong Agosto 18, 2020 na nagdulot ng surface rupture, landslides, at local tsunami ang parehong lindol. “This observation — that the rupture occurred at the same location as before — underscores the critical importance of active fault mapping for assessing ground rupture hazards,” saad pa ng mga experts. #PilipinasToday #Masbate #Lindol

🔍 New Article Published in GeoHazards! 📖 Seasonal and Episodic Variation of Aseismic Creep Displacement Along the West Valley Fault, Philippines ✍️ by Rolly E. Rimando, Deo Carlo E. Llamas, Bryan J. Marfito and Renato J. Garduque Read more: mdpi.com/2624-795X/6/3/…

Surface Rupture from an Aftershock: Remote Observations from the January 2024 Wushi (Aykol), China, Earthquakes #SRL An aftershock appears to have produced surface rupture, whereas its mainshock did not. buff.ly/lphc0dd

Article: Slab tearing along a subducted oceanic plate joint beneath the Alaska Peninsula @XiaotaoYang1 nature.com/articles/s4156…

🌟OPEN ACCESS🌟Curved Fault Slip Captured by CCTV Video During the 2025 Mw 7.7 Myanmar Earthquake🔥PRESS RELEASE🔥#TSR Dramatic video of fault slip during the recent Myanmar earthquake thrilled observers, but what data did it hold? Video: buff.ly/apOiPMk

@WinterFell1701 Looking back at this tweet, there really was a video that captured a fault rupture (just a little less than a year after this was posted) and it happened during the 2025 Myanmar earthquake. x.com/deotectonics/s…

@deotectonics Fascinating, i still cant find any video of an actual fault rupturing live on camera. One day surely.

#OnThisDay in 1990, the Digdig segment of the Philippine Fault generated a M7.8 earthquake in Luzon, producing a ~125 km surface rupture with ~6m maximum left-lateral offset. Thirty-four years later, we revisited a section of the rupture and found the fault offsets still visible

Likely surface rupture of the 2025 M7.7 Myanmar earthquake caught on cam! The shift of the ground to the right is so striking! Source: facebook.com/share/v/18gqF7…

Updated Optical image correlation using Sentinel-2 data N-S displacements along the Sagaing Fault suggest a surface rupture of approximately 500 km — unusually long fault rupture for a magnitude 7.7 earthquake! The maximum ground offset reaches more than 4 m. -DETect Faults

Apocalyptic scenes from Mandalay, MM. Only seeing small snippets of what is happening, given minimal internet or electricity. Supplies of food and water running scarce. Lack of machinery or govt support to find people under buildings. #WhatsHappeningInMyanmar #MyanmarEarthquake

UPDATED

Sentinel-2 Optical correlation using MicMac software (03272025 - 03302025). N-S displacements along the Sagaing Fault suggest a surface rupture of exceeding 300 km! -DETect Faults team

Updated @USGS_Quakes model indicate more than 400km of rupture. The southern extent is near Pyu City. Plotting the model against Tun & Watkinson diagram, looks like it broke Pyu segment. This section previously broke in 1930 M7.5 quake! Seismic gap nearby .. #MyanmarEarthquake

The #MyanmarEarthquake broke a seismic gap identified by Hurukawa and Maung (2011), called the Meiktila Gap. They prev. estimated a M7.9 earthquake here. Possibly, the last EQ on the gap was in 1839, Mw7.9–8.3. Credit: Hubbard & Bradley, DtA on Wikipedia

Surface rupture after 7.7 Earthquake in Myanmar.

Preliminary coseismic displacements and fault offset of 2025 Myanmar earthquake from @CopernicusEU @ESA #Sentinel2 images, processed by @NTU_TW GEOG #Copernicus 1. Rupture propagated from N to S 2. Maximum offset >4m 3. Two peaks of fault offset 4. Rupture length >300km

Possible surface rupture as a result of the M7.7 earthquake in Myanmar (?) Photos here appear to show right lateral offset in the roads.

Surface rupture: video shows right lateral displacement in a wall and building after the M7.7 earthquake in #Myanmar Credit: huuu71616 on TikTok #MyanmarEarthquake