scholarly journals IDENTIFIKASI POLA DISTRIBUSI STRESS COLOUMB PADA GEMPABUMI 2 AGUSTUS 2019 DI TUGU HILIR, INDONESIA

2020 ◽  
Vol 5 (1) ◽  
pp. 61-65
Author(s):  
Umbu Harti Mala ◽  
Juliany Ningsih Mohamad ◽  
Bernandus Bernandus ◽  
Valentinus G. V. Putra

Abstrak Penelitian ini bertujuan untuk mengidentifikasi pola distribusi perubahan stress coulomb yang dapat digunakan untuk melihat gempabumi susulan yang terjadi dalam jarak dan dalam rentang waktu yang dekat. Penelitian ini menggunakan data gempabumi yang terjadi pada 2 agustus 2019 dengan Mw 6,9 di Tugu Hilir, Indonesia, pada koordinat 104,825 BT dan 7,267 LS dengan kedalaman 52,8 km (USGS) memiliki mekanisme fokus (Strike, dip, rake) adalah (201°, 49°, 54°). Data ini kemudian diolah dengan menggunkan software coulomb 3.3 pada matlab. Dari hasil penelitian didapatkan bahwa gempabumi ini gempabumi ini memiliki peningkatan stress coulomb (≤ 1,0 bar) berarah timurlaut-baratdaya dan merupakan daerah gempabumi susulan terjadi. Sedangkan daerah penurunan stress coulomb (≤ -1,0 bar) berarah barat-laut tenggara. Kata kunci: gempabumi, perubahan stress coulomb, coulomb3.3, USGS, Tugu Hilir. Abstract This research aims to Identifed the distribution coulomb stress changed that can be used to seesthe subsequent earthquake that occurs within a short distanceand time span. This research uses earthquake data on 2 August 2019 with Mw 6.9 in Tugu Hilir, Indonesia, at 104.825°E and 7.267°S, with 52.8 km depth (USGS). The focus mechanism (strike, dip, rake) is (201°, 49°, 54°). This data prosessed by using Coulomb 3.3 software in MATLAB. The result found that this main earthquake had an increase coulomb stress changed (≤ 1.0 bar) in the northeast-southwest and was a subsequent earthquake area. Whereas the area of decrese of coulomb stress changed (≤ -1.0 bar) in the northwest-southeast.  Keywords: earthquake, coulomb stress changed, coulomb 3.3, USGS, Tugu Hilir

2013 ◽  
Vol 1 (2) ◽  
pp. 721-745
Author(s):  
M. Kawamura ◽  
Y.-H. Wu ◽  
T. Kudo ◽  
C. C. Chen

Abstract. For revealing the preparatory processes of large inland earthquakes, we systematically applied the Pattern Informatics method (PI method) to the earthquake data of Japan. We focused on 12 large earthquakes with magnitudes larger than M = 6.4 (an official magnitude of the Japan Meteorological Agency) that occurred at depths shallower than 30 km between 2000 and 2010. We examined the relation between the spatiotemporal locations of such large shallow earthquakes and those of PI hotspots, which correspond to the grid cells of anomalous seismic activities in a designated time span. Based on a statistical test using Molchan's error diagram, we inquired into the existence of precursory anomalous seismic activities of the large earthquakes and, if any, their characteristic time span. The test indicated that the Japanese M ≧ 6.4 inland earthquakes tend to be preceded by anomalous seismic activities of 8-to-10-yr time scales.


2012 ◽  
Vol 17 (4) ◽  
pp. 257-265 ◽  
Author(s):  
Carmen Munk ◽  
Günter Daniel Rey ◽  
Anna Katharina Diergarten ◽  
Gerhild Nieding ◽  
Wolfgang Schneider ◽  
...  

An eye tracker experiment investigated 4-, 6-, and 8-year old children’s cognitive processing of film cuts. Nine short film sequences with or without editing errors were presented to 79 children. Eye movements up to 400 ms after the targeted film cuts were measured and analyzed using a new calculation formula based on Manhattan Metrics. No age effects were found for jump cuts (i.e., small movement discontinuities in a film). However, disturbances resulting from reversed-angle shots (i.e., a switch of the left-right position of actors in successive shots) led to increased reaction times between 6- and 8-year old children, whereas children of all age groups had difficulties coping with narrative discontinuity (i.e., the canonical chronological sequence of film actions is disrupted). Furthermore, 4-year old children showed a greater number of overall eye movements than 6- and 8-year old children. This indicates that some viewing skills are developed between 4 and 6 years of age. The results of the study provide evidence of a crucial time span of knowledge acquisition for television-based media literacy between 4 and 8 years.


ALQALAM ◽  
2015 ◽  
Vol 32 (1) ◽  
pp. 83
Author(s):  
Maftuh Maftuh

For many observers, Banten is well known as an area where the population has a strict religious understanding onislamic law. Colonial officials and experts in Islamic studies such as Snouck Hurgronje and GF Pijper, testified that compared to other Muslims across Java , Muslim in Banten and Cirebon were stricter in practicing Islam . The phenomenon of the social life of the religious community in Banten is necessarily formed within a very long time span. This paper traces the root of the formation of public religious understanding ojMuslim in Banten. Using a socio-historical approach, this paper then leads to the conclusion that the sultan of Banten issued policies that had a greater emphasis to the adherence to the Shari'a rather than Sufism. Religious orientation on the fiqh-oriented can explain the Islamic militancy Banten community, as witnessed by the colonial officials, and even still can be seen up to this present moment.Key words: Jslamization, Sultanate, Banten


2015 ◽  
Vol 19 (2) ◽  
pp. 67-74
Author(s):  
Fulya Akpak ◽  
Nuri Seha Yüksel ◽  
Ayşegül Kabanlı ◽  
Tolga Günvar

2018 ◽  
Author(s):  
Sigit Haryadi

We cannot be sure exactly what will happen, we can only estimate by using a particular method, where each method must have the formula to create a regression equation and a formula to calculate the confidence level of the estimated value. This paper conveys a method of estimating the future values, in which the formula for creating a regression equation is based on the assumption that the future value will depend on the difference of the past values divided by a weight factor which corresponding to the time span to the present, and the formula for calculating the level of confidence is to use "the Haryadi Index". The advantage of this method is to remain accurate regardless of the sample size and may ignore the past value that is considered irrelevant.


1985 ◽  
Author(s):  
G.R. Crane ◽  
W.H. Lee ◽  
M. E. O'Neill

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