scholarly journals The autumn 1919 Torremendo (Jacarilla) earthquake series (SE Spain)

2015 ◽  
Vol 58 (3) ◽  
Author(s):  
Josep Batlló ◽  
José Manuel Martínez-Solares ◽  
Ramon Macià ◽  
Daniel Stich ◽  
José Morales ◽  
...  

<p>On 10th September 1919 several slightly damaging earthquakes struck the towns of Torremendo, Jacarilla (near Alicante, SE-Spain) and others nearby. Available magnitude estimations for the largest two events of the series are M = 5 approx. They were earthquakes of moderate size and they occurred in a region where similar magnitude earthquakes, thoroughly studied, occurred recently (1999 Mula; 2002 Bullas; 2005 La Paca; 2011 Lorca). This makes these events of interest for a better definition of the regional seismicity. We study their sources from the analysis of the available contemporary seismograms and related documents. A total of 23 seismograms from 9 seismic stations have been collected and digitized. These seismograms contain records for the two main events and several aftershocks of the earthquake series. Finally 44 files, corresponding to 44 recorded single component records from the different events have been processed. The events have been relocated and their magnitudes recalculated. Also, original macroseismic information for these events was recovered. A macroseismic evaluation of the series has been performed. Intensity data points have been recalculated and macroseismic location and magnitude obtained. We conclude that these are the largest earthquakes occurred in the region since the beginning of instrumental recording, with Mw = 5.5 for the largest shock, and that the available data could be compatible with a thrust mechanism related to blind faults in the Bajo Segura region.</p>

Geosciences ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 303
Author(s):  
Pablo G. Silva ◽  
Javier Elez ◽  
Jorge L. Giner-Robles ◽  
Raúl Pérez-López ◽  
Elvira Roquero ◽  
...  

This work reviews the 1863 Huércal-Overa earthquake (VI-VII EMS) based on the environmental seismic intensity scale (ESI-07) and oriented archaeoseismological building damage. The performed analysis identifies 23 environmental effects (EEEs) and 11 archaeoseismological effects (EAEs), completing a total of 34 intensity data-points within the intensity zone ≥ VI EMS. The new ESI intensity data quintuplicate the previous intensity data-points ≥ VI EMS (five localities) for this event. Sixteen of the identified EEEs indicate the occurrence of intensity VII-VIII within the Almanzora valley, south of Huércal-Overa, over an area of ca. 12–15 km2. Anomalies in water bodies, slope movements, hydrogeological anomalies, ground cracking, and other effects (gas emissions, tree shaking) are the more diagnostic EEEs—with one of them indicating a local maximum intensity of VIII-IX ESI-07 (Alboraija lake). Environmental earthquake damage of intensity ≥ VI covers an area of c. 100 km2, compatible with a VIII ESI intensity event. The spatial distribution of EEEs and EAEs indicates that the zone of Almanzora River Gorge, which was depopulated during the earthquake epoch, was the epicentral area, and compatible with seismotectonic data from active shallow blind thrusting beneath the Almagro Range. The use of ESI data in nearly unpopulated areas help to fill gaps between damaged localities (EMS data) multiplying intensity data-points, providing a better definition of the intensity zones and offering a geological basis to look for suspect seismic sources.


Author(s):  
V. Mapuranga ◽  
A. Kijko ◽  
I. Saunders ◽  
A. Singh ◽  
M. Singh ◽  
...  

Abstract On the 6th of February 2016 at 11:00 hours local time (0900 UTC), KwaZulu-Natal was struck by an earthquake of local magnitude ML=3.8. The epicentre of the earthquake was located offshore in the Durban Basin. The earthquake shaking was widely felt within the province as well as in East London in the Eastern Cape province and was reported by various national media outlets. Minor structural damage was reported. A macroseismic survey using questionnaires was conducted by the Council for Geoscience (CGS) in collaboration with the University of KwaZulu-Natal (UKZN) which yielded 41 intensity data points. Additional intensity data points were obtained from the United States Geological Survey (USGS) Did You Feel It? programme. An attempt was made to define a local intensity attenuation model. Generally, the earthquake was more strongly felt in low-cost housing neighbourhoods than in more affluent suburbs.


2014 ◽  
Vol 199 (2) ◽  
pp. 1278-1285 ◽  
Author(s):  
Boris Le Goff ◽  
José Fernando Borges ◽  
Mourad Bezzeghoud

2016 ◽  
Vol 20 (4) ◽  
Author(s):  
RASHID BURTIEV

<p>Fitting an ellipse to the set of intensity data points of earthquakes occurred on 11.10.1940, 07.04.1977, 31.08.1986, 30.05.1990 and 31.05.1990 is performed. Test criteria indicate that the ellipse smoothes the observed line of macroseismic field. For all earthquakes, focal axes of 5, 6 and 7 EMS-98 intensity zones are directed along the y-axis. For other zones are oriented along the parallels. This fact is one more acknowledgement of the anisotropy of a geophysical medium. Approximation of the set of points with an ellipse is performed using the method proposed by Fitzgibbon. </p>


2013 ◽  
Vol 56 (1) ◽  
Author(s):  
Aurelian Pantea ◽  
Angela Petruta Constantin

<p>In this paper, the macroseismic effects of the subcrustal earthquake in Vrancea (Romania) that occurred on March 4, 1977, have been re-evaluated. This was the second strongest seismic event that occurred in this area during the twentieth century, following the event that happened on November 10, 1940. It is thus of importance for our understanding of the seismicity of the Vrancea zone. The earthquake was felt over a large area, which included the territories of the neighboring states, and it produced major damage. Due to its effects, macroseismic studies were developed by Romanian researchers soon after its occurrence, with foreign scientists also involved, such as Medvedev, the founder of the Medvedev-Sponheuer-Karnik (MSK) seismic intensity scale. The original macroseismic questionnaires were re-examined, to take into account the recommendations for intensity assessments according to the MSK-64 macroseismic scale used in Romania. After the re-evaluation of the macroseismic field of this earthquake, the intensity dataset was obtained for 1,620 sites in Romanian territory. The re-evaluation was necessary as it has confirmed that the previous macroseismic map was underestimated. On this new map, only the intensity data points are plotted, without tracing the isoseismals.</p>


2018 ◽  
Vol 22 (4) ◽  
pp. 927-941
Author(s):  
Lara Tiberi ◽  
Giovanni Costa ◽  
Petra Jamšek Rupnik ◽  
Ina Cecić ◽  
Peter Suhadolc

Author(s):  
Gheorghe Marmureanu ◽  
Radu Vacareanu ◽  
Carmen Ortanza Cioflan ◽  
Constantin Ionescu ◽  
Dragos Toma-Danila

CJEM ◽  
2017 ◽  
Vol 19 (S1) ◽  
pp. S79-S80 ◽  
Author(s):  
S. AlQahtani ◽  
P. Menzies ◽  
B. Bigham ◽  
M. Welsford

Introduction: Early recognition of sepsis is key in delivering timely life-saving interventions. The role of paramedics in recognition of these patients is understudied. It is not known if the usual prehospital information gathered is sufficient for severe sepsis recognition. We sought to: 1) evaluate the paramedic medical records (PMRs) of severe sepsis patients to describe epidemiologic characteristics; 2) determine which severe sepsis recognition and prediction scores are routinely captured by paramedics; and 3) determine how these scores perform in the prehospital setting. Methods: We performed a retrospective review of patients ≥18 years who met the definition of severe sepsis in one of two urban Emergency Departments (ED) and had arrived by ambulance over an eighteen-month period. PMRs were evaluated for demographic, physiologic and clinical variables. The information was entered into a database, which auto-filled a tool that determined SIRS criteria, shock index, prehospital critical illness score, NEWS, MEWS, HEWS, MEDS and qSOFA. Descriptive statistics were calculated. Results: We enrolled 298 eligible sepsis patients: male 50.3%, mean age 73 years, and mean prehospital transportation time 30 minutes. Hospital mortality was 37.5%. PMRs captured initial: respiratory rate 88.6%, heart rate 90%, systolic blood pressure 83.2%, oxygen saturation 59%, temperature 18.7%, and Glasgow Coma Scale 89%. Although complete MEWS and HEWS data capture rate was &lt;17%, 98% and 68% patients met the cut-point defining “critically-unwell” (MEWS ≥3) and “trigger score” (HEWS ≥5), respectively. The qSOFA criteria were completely captured in 82% of patients; however, it was positive in only 36%. It performed similarly to SIRS, which was positive in only 34% of patients. The other scores were interim in having complete data captured and performance for sepsis recognition. Conclusion: Patients transported by ambulance with severe sepsis have high mortality. Despite the variable rate of data capture, PMRs include sufficient data points to recognize prehospital severe sepsis. A validated screening tool that can be applied by paramedics is still lacking. qSOFA does not appear to be sensitive enough to be used as a prehospital screening tool for deadly sepsis, however, MEWS or HEWS may be appropriate to evaluate in a large prospective study.


2020 ◽  
Vol 38 (15_suppl) ◽  
pp. e24011-e24011
Author(s):  
William Paul Skelton ◽  
Jason Scott Starr ◽  
Kiarash Rahmanian ◽  
Robert Guenther ◽  
William L. Allen ◽  
...  

e24011 Background: Advanced care planning and living wills are critical components of caring for patients at the end of their lives. Advance directives are designed to be implemented when a patient meets the legal definition of terminal and is deemed incapacitated. By reviewing the electronic health record (EHR) in patients with terminal cancer, we sought to evaluate whether advance directives were appropriately implemented. Methods: A retrospective analysis of the EHR of 500 cancer patients from 1/1/2013 to 12/31/2016 was performed. Data points were manually collected and entered in a central database, and data analysis was completed using SAS. Results: Of the 500 patients, 160 (32%) had an advance directive (AD). The most common clinical terminology used by physicians indicating a terminal diagnosis was “progressive” (36.6%) and “palliative” (31%). The most common clinical terminology indicating incapacity was “altered mental status” (25.6%), and “not oriented” (14%). 34 patients (6.8%) met all criteria of having a terminal diagnosis, a documented AD, and deemed incapacitated. Of these patients who met all of these data points, their ADs were implemented on average 1.7 days (SD: 4.4 days) after which they should have been. This resulted in a total of 58 days of additional care provided to these patients. Conclusions: End-of-life care is a challenging albeit vital part of the practice of medicine. This study provided insight on to how ADs are managed in day to day practice in a hospital. From our analysis, it is clear that physicians are able to identify when a patient is terminal; however, it is typically later than it should have been recognized (and thereby, leading to delays in the implementation of the patient’s AD). Further studies should be performed focusing on harnessing the power of the EHR and providing physicians formative and evaluative feedback of practice patterns to ensure that ADs are honored when appropriate.


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