ABSTRACT
The first step towards assessing hazards in seismically active regions involves mapping capable faults and estimating their recurrence times. While the mapping of active faults is commonly based on distinct geologic and geomorphic features evident at the surface, mapping blind seismogenic faults is complicated by the absence of on-fault diagnostic features. Here we investigated the Pichilemu Fault in coastal Chile, unknown until it generated a Mw 7.0 earthquake in 2010. The lack of evident surface faulting suggests activity along a partly-hidden blind fault. We used off-fault deformed marine terraces to estimate a fault-slip rate of 0.52 ± 0.04 m/ka, which, when integrated with satellite geodesy suggests a 2.12 ± 0.2 ka recurrence time for Mw~7.0 normal-faulting earthquakes. We propose that extension in the Pichilemu region is associated with stress changes during megathrust earthquakes and accommodated by sporadic slip during upper-plate earthquakes, which has implications for assessing the seismic potential of cryptic faults along convergent margins and elsewhere.
Subject(s)
Drug Prescriptions , Pediatrics , Pharmacopoeias as Topic , Ambulatory Care , Child , Forecasting , Humans , SpainABSTRACT
The present report reviews the problem of depression in children by means of an interview made by a pediatric to two paidopsychiatrists: concept, incidence, etiology and clinic, emphasizing un those features of interest and related to the pediatric and based on a bibliographic revision and the own experience of the authors, referring fifty cases of recent study. It is also showed the main exploratory and diagnosis methods: psychological, clinical and biological, as the evolution, treatment and some aspects of suicide in children.
