Regional Moment Tensor Analysis In The Philippines: Cmt Solutions In 2012 2013

720 words - 3 pages

Earthquake Source Parameter Determination based on Waveform Inversion of Fourier Transformed Seismograms (SWIFT) is based on the inversion method of Nakano et. al., 2008. This section summarized the methodology performed in this software. The Software estimates source centroid locations and focal mechanisms of earthquakes by solving the inverse problem in the frequency domain for efficient computations. The observed velocity seismograms are corrected for instrument response and then integrated in time to obtain the displacement seismograms. The waveforms are then bandpass filtered between 50 seconds and 100 seconds and decimated to a sampling frequency of 0.5 Hz. A total of data length of 512 s (256 data points in each channel) is used.

The formulation of the displacement field excited by a point source in the frequency domain is given as

u ̃_n (ω_k )= ∑_(i=1)^(N_m)▒〖G ̃_ni (ω_k ) m ̃_i (ω_k ) 〗 ,k=1,…,N_f (1)

where ω_k is the angular frequency, u ̃_n (ω_k ), m ̃_i (ω_k ) and G ̃_ni (ω_k ) are the Fourier transforms of the nth trace of a displacement seismogram, the ith base of the moment function tensor, and the spatial derivative of Green’s function, respectively; N_m is the number of independent bases of moment tensor components; and N_f is the number of frequency components used for the waveform inversion. In matrix form, Eq. (1) is given as

d ̃(ω_k )= G ̃(ω_k ) m ̃(ω_k ) ,k=1,…,N_f (2)
where d ̃(ω_k ) is the data vector consisting of u ̃_n (ω_k ), G ̃(ω_k ) and is the data kernel matrix with its elements G ̃_ni (ω_k ), and m ̃(ω_k ) is the model parameter vector consisting of m ̃_i (ω_k ). In this approach, the matrix equations for all frequencies are independent of each other and can be solved separately, and the computation is much more efficient than that for solving the inverse problem in the time domain (Nakano et al. 2008). In the inversion method (Nakano et al. 2008), a double-couple focal mechanism is assumed in order to stabilize the solution obtained using data from a small number of seismic stations. The source centroid location is estimated by a spatial grid search which minimizes the normalized...

Find Another Essay On Regional Moment Tensor Analysis in the Philippines: CMT Solutions in 2012-2013

Malnutrition in the Philippines Essay

1488 words - 6 pages and malnutrition” (Albay). This hasn’t been the only massive typhoon to hit the Philippines in recent years either. Just in November of 2013, Typhoon Haiyan attacked the Philippines and it was known as “the strongest cyclone to hit land in recorded history” (PBS). If regular typhoons already cause widespread malnutrition across the country, the status of the problem could only be worse after Typhoon Haiyan. With all of that in mind, one thing is

Terrorism in the Philippines Essay

1464 words - 6 pages Philippines. After World War II the United States and the Philippines, then a republic, signed a treaty on July 4, 1946. Even though the Philippines gained their independence in 1946, the United States still had military bases on the island, one Air Force and one Naval, until 1992. According Philippine Facts, The current population is 106 million people. The majority of the population is between the ages of 25 and 54 years old. The rural versus

Poverty in the Philippines

841 words - 4 pages Poverty has in existed in the Philippines for over 50 years. In the Philippines, they suffer natural disasters such as typhoons year after year, causing constant struggle to farmers. Problems with food growth may also cause people to go hunger may not be able to purchase groceries. Charities can donate to support the Philippines in their crisis towards poverty. People must do everything they can to stop the poverty in the Philippines by doing

Poverty In the Philippines

3141 words - 13 pages Poverty In the Philippines The rich, the middle class, and the poor; are described by the way we live and the amount of money one has. There are many different ways of describing what poverty is, whether it is by how you live or how much money you have. What is poverty and what does it mean to be poor? Not many of us know the true meaning of these terms. Poverty is an issue dealt with throughout the world, but we are not all aware if

Analysis of Non Government Organizations in the Philippines

685 words - 3 pages in the field of education (Unang Hakbang sa Kinabukasan) besides from disaster relief (Operation Bayanihan) (Wikipedia, modified December 2013) These foundations collected enough donations that are used in helping the affected residents in the disaster areas. In these charitable hands of the networks’ foundation, they will continue doing what they’ve started; it may come a time when the government can use their skills in serving the people better

Analysis of Non Government Organizations in the Philippines

593 words - 3 pages These two Non Government Organizations: ABS – CBN Sagip Kapamilya and GMA Kapuso Foundation does affect an individual’s life, but it can affect each of everyone in different ways. In the collection of donations, GMA Kapuso Foundation found in – kind donations more important that monetary donations, while ABS – CBN Sagip Kapamilya Foundation found monetary donations the most important of all the donations. However, there are also some

Regional Integration In The Caribbean

1353 words - 5 pages Regional Integration is when an economic alliance or trade agreement is formed among countries that are located geographically close to one another. This paper analyzes the role of regional integration in promoting global business, discusses the advantages and disadvantages of regional integration using a trading block as an example, and compares the economic development stages of two countries within a chosen region and discusses the

Land Conversion in the Philippines

3001 words - 12 pages Philippine Agriculture." Asian Journal of Agriculture and Development. 2.1 & 2 (2005): 71. Web. 12 Dec. 2013. . Bureau of Agricultural Statistics. "Regional Profile: Central Luzon." CountryStat Philippines. Bureau of Agricultural Statistics. Web. 6 Dec 2013. . Cororaton, Caesar, and John Cockburn. "WTO, Trade Liberalization, and Rural Poverty in the

Political Dynasty in the Philippines

2068 words - 9 pages familiar. Another instance is, they are satisfied with the “catchy” advertisements of these candidates. Our country, the Philippines, has been in a system like this for decades, and it is called the political dynasty. Political dynasty is very evident in our country. During the senatorial campaign and elections last 2013, many names have been controversial. Several candidates have been questioned whether they can be adequate leaders of the country

Current Issues in the Philippines

1320 words - 5 pages ingenuity of every Filipino, through education, we can help the Philippines become one of the leading countries in Asia in the coming years.References:Ballesteros, M. M. (2010). Linking poverty and the environment: Evidence from slums in philippine cities. Retrieved on December 19, 2013 from, T. (2013). Pinoy kids micronutrient deficient. Retrieved on December 19, 2013 from http

RH Law in the Philippines

3836 words - 15 pages social conventions during those times. It means that the passing of the bill is not necessarily being done because it was only formulated due to the current status of society which continually changes through time.References:Sr. Mary Pilar L. Verzosa, RGS Founder of Pro-Life Philippines Fdn. Inc. Pro-Life Philippines Foundation Inc, September 23, 2012. Web. September 30, 2012.Teenage Pregnancy in Philippines rise 70-percent over 10

Similar Essays

Electromagnetic Field Tensor In Curvilinear Coordinates

2998 words - 12 pages curvilinear coordinates on boundary Topology & Geometry 0Rank 3 tensor created by taking the derivative of electromagnetic field tensor Advanced Physics 1Tensor analysis in curvilinear coordinates Topology & Geometry 2Parte superior do formulárioMark Forums Read Home - Archive - TopPowered by vBulletin Copyright ©2000 - 2012, Jelsoft Enterprises Ltd. © 2012 Physics Forums | Science News PartnerParte inferior do formulário 

Poverty In The Philippines Essay

885 words - 4 pages , women by one point one percent, and youth by one point eight percent (NSCB). Another study in 2006 states that about a quarter of the Philippines population was living on less than a dollar and twenty-five cents a day compared to people in the U.S. spending seven dollars on entertainment alone and twice that on transportation(Chumley K. Cheryl). A more recent study shows that in 2013 twenty-eight percent of the Philippines ninety-seven million

Poverty In The Philippines Essay

969 words - 4 pages Poverty in the Philippines has been a major issue throughout the years. Typhoons, natural disasters, and its poor economy are some of the many reasons that have caused poverty in the Philippines. Natural disasters have lessened economic growth and development. According to WSJ, their countries economic growth rate has grown around seven percent recorded between the years 2006 and 2012. The actual number of poor families has risen from 3.81

Poverty In The Philippines Essay 940 Words

940 words - 4 pages affecting the Philippines today. It is said from ‘World’ that GDP for U.S currency in the latest update 2012 is $250.2 billion and their current population since 2012 is 96.71 million. About most of the population is living in poverty due to a recent disaster from a typhoon. Ever since the typhoon poverty has increased and the Philippines have to waste more money which is going to cost $500.00 million in U.S currency. Because of these repairs