Detecting Millimetric Slow Slip Events Along the North Anatolian Fault With GNSS

Özdemir A., Jara J., DOĞAN U., Jolivet R., Çakır Z., Nocquet J., ...More

Geophysical Research Letters, vol.52, no.10, 2025 (SCI-Expanded, Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 52 Issue: 10
  • Publication Date: 2025
  • Doi Number: 10.1029/2024gl111428
  • Journal Name: Geophysical Research Letters
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Agricultural & Environmental Science Database, Aquatic Science & Fisheries Abstracts (ASFA), CAB Abstracts, Communication Abstracts, Compendex, Geobase, INSPEC, Metadex, Pollution Abstracts, Veterinary Science Database, Civil Engineering Abstracts, Nature Index
  • Keywords: creep, geodesy, GNSS, North Anatolian Fault, SSE, transient deformation
  • Yıldız Technical University Affiliated: Yes

Abstract

Active faults release part of the elastic strain energy stored in the crust via aseismic slip, either through slow slip events (SSEs) or steady slowly creep. However, spatial and temporal interactions between these different styles of aseismic slip have yet to be quantified especially at depth. Along the central section of the North Anatolian Fault, we apply a Multichannel Singular Spectrum Analysis (MSSA) on GNSS time series of ground motion to detect a (Formula presented.) 4.8 (Formula presented.) 0.08 shallow SSE (2–5 km depth) lasting for 26 (Formula presented.) 5 days, in agreement with local creepmeter observations. Our observations confirm the recurrence of SSEs next to a steadily creeping section of the fault. Finally, we discuss how steady creep and SSEs interact spatially and temporally along the fault segment.