Caltech/USGS Southern California Seismic Network (SCSN) and Southern California Earthquake Data Center (SCEDC): Data Availability for the 2019 Ridgecrest Sequence

2020 ◽  
Vol 91 (4) ◽  
pp. 1961-1970 ◽  
Author(s):  
Egill Hauksson ◽  
Clara Yoon ◽  
Ellen Yu ◽  
Jennifer R. Andrews ◽  
Marcos Alvarez ◽  
...  
Keyword(s):  
Data Center ◽  
Southern California ◽  
Time Series Data ◽  
Seismic Network ◽  
Data Availability ◽  
Earthquake Sequence ◽  
Series Data ◽  
Owens Valley ◽  
The North ◽  
Earthquake Data

Abstract The 2019 Mw 6.4 and Mw 7.1 Ridgecrest earthquake sequence occurred in the eastern California shear zone (ECSZ). The mainshock ruptured the Little Lake fault zone, and aftershocks extended from the Garlock fault in the south to the southern end of the 1872 M 7.5 Owens Valley earthquake rupture in the north. We present data from the Southern California Seismic Network (SCSN) and partner seismic networks recorded by the SCSN in the region. These time-series data and related products such as the SCSN earthquake picks and catalogs, available from the Southern California Earthquake Data Center, provide the most comprehensive seismic datasets for the 2019 Ridgecrest earthquake sequence.

Southern California Earthquake Data Now Available in the AWS Cloud

2021 ◽  
Author(s):  
Ellen Yu ◽  
Aparna Bhaskaran ◽  
Shang-Lin Chen ◽  
Zachary E. Ross ◽  
Egill Hauksson ◽  
...  
Keyword(s):  
Southern California ◽  
Data Availability ◽  
First Year ◽  
Earthquake Catalog ◽  
High Data ◽  
Seismic Waveform ◽  
Challenges And Opportunities ◽  
Amazon Web Services ◽  
Computationally Intensive ◽  
Earthquake Data

Abstract The Southern California Earthquake Data Center is hosting its earthquake catalog and seismic waveform archive in the Amazon Web Services (AWS) Open Dataset Program (s3://scedc-pds; us-west-2 region). The cloud dataset’s high data availability and scalability facilitate research that uses large volumes of data and computationally intensive processing. We describe the data archive and our rationale for the formats and data organization. We provide two simple examples to show how storing the data in AWS Simple Storage Service can benefit the analysis of large datasets. We share usage statistics of our data during the first year in the AWS Open Dataset Program. We also discuss the challenges and opportunities of a cloud-hosted archive.

scholarly journals Relative effects of regional and global trade on carbon emissions in ECOWAS member countries

2019 ◽  
Vol 22 (1) ◽  
pp. 64-75
Author(s):  
Lukman O Oyelami
Keyword(s):  
Environmental Quality ◽  
Carbon Emissions ◽  
Time Series Data ◽  
Relative Effect ◽  
Data Availability ◽  
Series Data ◽  
Global Trade ◽  
Panel Ardl ◽  
Long Run ◽  
Short Run

The effect of trade on environmental quality has always been ambiguous in both developed and developing countries. This has prompted several country- and region-specific studies. It is against this background that this study seeks to investigate the effect of international trade on carbon emissions in the ECOWAS subregion in general and specifically determines the relative effect of regional and global trade on carbon emissions. To achieve this, time series data on trade and carbon emissions from 1970 to 2014 were employed for 14 ECOWAS member countries based on data availability and the data were duly subjected to required econometric tests to prevent spurious analysis. PMG/MG method of panel ARDL was adopted to estimate the relative effect of regional and global trade on carbon emissions and this is based on capability of the method to classify relationship into short-run and long-run and also solve endogenity issues. The results from model estimation show that effect of trade on environmental quality is a long-term phenomenon and basically support the view that trade has negative effect on environmental quality. However, regional trade is less harmful and it can guarantee improved environment quality in the long run. The study therefore recommend that countries in the region should trade more with one another especially in areas where they lack competiveness as this can better guarantee a more sustainable development for the entire subregion.

scholarly journals Parameter uncertainty of a dynamic multispecies size spectrum model

2016 ◽  
Vol 73 (4) ◽  
pp. 589-597 ◽  
Author(s):  
Michael A. Spence ◽  
Paul G. Blackwell ◽  
Julia L. Blanchard
Keyword(s):  
Time Series ◽  
Time Series Data ◽  
Size Structure ◽  
Management Strategies ◽  
Optimization Methods ◽  
Series Data ◽  
Size Spectrum ◽  
Aquatic Communities ◽  
The North ◽  
Spectrum Model

Dynamic size spectrum models have been recognized as an effective way of describing how size-based interactions can give rise to the size structure of aquatic communities. They are intermediate-complexity ecological models that are solutions to partial differential equations driven by the size-dependent processes of predation, growth, mortality, and reproduction in a community of interacting species and sizes. To be useful for quantitative fisheries management these models need to be developed further in a formal statistical framework. Previous work has used time-averaged data to “calibrate” the model using optimization methods with the disadvantage of losing detailed time-series information. Using a published multispecies size spectrum model parameterized for the North Sea comprising 12 interacting fish species and a background resource, we fit the model to time-series data using a Bayesian framework for the first time. We capture the 1967–2010 period using annual estimates of fishing mortality rates as input to the model and time series of fisheries landings data to fit the model to output. We estimate 38 key parameters representing the carrying capacity of each species and background resource, as well as initial inputs of the dynamical system and errors on the model output. We then forecast the model forward to evaluate how uncertainty propagates through to population- and community-level indicators under alternative management strategies.

Municipal changes in Slovakia. The evidence from spatial data.

2020 ◽  
Vol 11 (1) ◽  
pp. 58-72
Author(s):  
Martin MARIS
Keyword(s):  
Spatial Data ◽  
Time Series Data ◽  
Population Sample ◽  
Series Data ◽  
Annual Growth Rate ◽  
The West ◽  
Compound Annual Growth Rate ◽  
Fast Growing ◽  
The North ◽  
Statistical Criteria

The main objective of the paper is to examine the evolution of spatial patterns of settlement network in Slovakia as a result of population rearrangement among municipalities based on time series data of 1993 - 2017. The objects of the research are municipalities, which during the searched period recorded unusual fast population growth or decline, far exceeding the chosen parameter of the population sample. The primary population sample consists of 2919 municipalities. The experimental samples consist of 563 of fast-growing municipalities and 413 of fast-declining municipalities, based on the chosen statistical criteria, what is the compound annual growth rate. The results have shown that fast-growing municipalities are predominantly situated on the West, surrounding the Bratislava agglomeration, on the North and the East surrounding the Kosice metropolis. Generally, they tend to cluster around the cities on the district and regional levels. Fast-declining municipalities predominantly situated in the Middle, along the Hungarian, Polish, and Ukrainian border on the South and the East of the country, respectively.

Precise identification of maize in the North China Plain based on Sentinel-1A SAR time series data

2018 ◽  
Vol 40 (5-6) ◽  
pp. 1996-2013 ◽  
Author(s):  
Li Li ◽  
Qingling Kong ◽  
Pengxin Wang ◽  
Lan Xun ◽  
Lei Wang ◽  
...  
Keyword(s):  
Time Series ◽  
North China Plain ◽  
North China ◽  
Time Series Data ◽  
Series Data ◽  
The North ◽  
The North China Plain ◽  
Precise Identification

scholarly journals INFASI, PENGANGGURAN DAN KEMISKINAN DI PROVINSI MALUKU UTARA

2020 ◽  
Vol 1 (2) ◽  
Author(s):  
Dewi Permatasari
Keyword(s):  
Time Series ◽  
Path Analysis ◽  
Time Series Data ◽  
Positive Impact ◽  
Poverty Rate ◽  
Series Data ◽  
High Unemployment ◽  
The North ◽  
Poverty Levels ◽  
Positive Effect

Tinjauan kemiskinan dari dimensi ekonomi ini diartikan sebagai ketidakmampuan seseorang untuk mendapatkan mata pencaharian yang mapan dan memberikan penghasilan yang layak untuk menunjang hidupnya secara berkesinambungan. Kemiskinan merupakan salah satu masalah yang menjadi pusat perhatian di negara manapun. Kemiskinan disebabkan oleh berbagai faktor, seperti tingkat investasi yang masih dibawah standar, tingkat pengangguran yang tinggi, dan pertumbuhan ekonomi yang lambat. Tujuan penelitian ini adalah menganalisis pengaruh inflasi terhadap pengangguran dan kemiskinan, dan pengaruh pengangguran terhadap kemiskinan di Provinsi Maluku Utara. Penelitian ini menggunakan data runtun waktu (time series) tahun 2013-2018 dan menggunakan analisis jalur (path analysis). Hasil penelitian menunjukkan bahwa inflasi berpengaruh positif terhadap tingkat pengangguran dan kemiskinan di Provinsi Maluku Utara. Kemudian, pengangguran juga berpengaruh positif terhadap tingkat kemiskinan. Semakin tinggi tingkat inflasi dan pengangguran semakin besar tingkat kemiskinan.Kata kunci: Inflasi, Pengangguran, dan Kemiskinan, Maluku Utara Poverty review from the economic dimensions is interpretedas the inability of a person to obtain an established livelihood and provided a decent income to sustainably support life. Poverty is problems that attention any country. Poverty is caused by various factors, such as low investment, high unemployment, and slow economic growth. The purpose of this study was to analyze the effect of inflation on unemployment and poverty, and the effect of unemployment on poverty in North Maluku Provience. This study uses time series data from 2013 to 2018, and path analysis. The results showed that inflation has a positive effect on increasing unemployment and poverty. High unemployment has a positive impact on poverty levels. The higher level of inflation and unemployment, the higher poverty rate in the North Maluku Provience. Keywords: Inflation, Unemployment, Poverty, North Maluku

scholarly journals Temporal analysis of reported cases of tuberculosis and of tuberculosis-HIV co-infection in Brazil between 2002 and 2012

2016 ◽  
Vol 42 (6) ◽  
pp. 416-422 ◽  
Author(s):  
Renato Simões Gaspar ◽  
◽  
Natália Nunes ◽  
Marina Nunes ◽  
Vandilson Pinheiro Rodrigues ◽  
...  
Keyword(s):  
Time Series Data ◽  
Age Groups ◽  
The Elderly ◽  
Temporal Analysis ◽  
Series Data ◽  
Public Health Issue ◽  
Risk Of Death ◽  
The North ◽  
Geographical Regions ◽  
Risk Of Treatment

ABSTRACT Objective: To investigate the reported cases of tuberculosis and of tuberculosis-HIV co-infection in Brazil between 2002 and 2012. Methods: This was an observational study based on secondary time series data collected from the Brazilian Case Registry Database for the 2002-2012 period. The incidence of tuberculosis was stratified by gender, age group, geographical region, and outcome, as was that of tuberculosis-HIV co-infection. Results: Nationally, the incidence of tuberculosis declined by 18%, whereas that of tuberculosis-HIV co-infection increased by 3.8%. There was an overall decrease in the incidence of tuberculosis, despite a significant increase in that of tuberculosis-HIV co-infection in women. The incidence of tuberculosis decreased only in the 0- to 9-year age bracket, remaining stable or increasing in the other age groups. The incidence of tuberculosis-HIV co-infection increased by 209% in the ≥ 60-year age bracket. The incidence of tuberculosis decreased in all geographical regions except the south, whereas that of tuberculosis-HIV co-infection increased by over 150% in the north and northeast. Regarding the outcomes, patients with tuberculosis-HIV co-infection, in comparison with patients infected with tuberculosis only, had a 48% lower chance of cure, a 50% greater risk of treatment nonadherence, and a 94% greater risk of death from tuberculosis. Conclusions: Our study shows that tuberculosis continues to be a relevant public health issue in Brazil, because the goals for the control and cure of the disease have yet to be achieved. In addition, the sharp increase in the incidence of tuberculosis-HIV co-infection in women, in the elderly, and in the northern/northeastern region reveals that the population of HIV-infected individuals is rapidly becoming more female, older, and more impoverished.

scholarly journals Analisis Determinan Pajak Daerah Dan Pengeluaran Pemerintah Terhadap Pertumbuhan Ekonomi Di Kabupaten Aceh Utara Tahun 2009-2017

2020 ◽  
Vol 3 (2) ◽  
pp. 1
Author(s):  
Rika Sukma ◽  
Cut Putri Sari
Keyword(s):  
Economic Growth ◽  
Time Series Data ◽  
Linear Regression Analysis ◽  
Secondary Data ◽  
Multiple Linear Regression Analysis ◽  
Government Expenditures ◽  
Series Data ◽  
Analysis Method ◽  
Local Taxes ◽  
The North

This study aims to determine the effect of local taxes and government expenditures on economic growth in the North Aceh Regency. This study uses secondary data in the form of time series data in 2009-2017 obtained from the Central Bureau of Statistics of Aceh Regency. The data analysis method used is the Multiple Linear Regression analysis. The result partially shows that local taxes have a positive and significant effect on economic growth in North Aceh Regency, while government expenditures have a negative and significant effect on economic growth in North Aceh Regency. Simultaneously, local taxes and government spending have a significant effect on economic growth in the North Aceh Regency. Keywords: Economic Growth, Local Taxes and Government Expenditures

Market perceptions of liquid sovereign Sukūk: a new asset class?

2016 ◽  
Vol 9 (1) ◽  
pp. 87-108 ◽  
Author(s):  
Volker Nienhaus ◽  
Abdullah Karatas
Keyword(s):  
Time Series Data ◽  
Supply And Demand ◽  
Data Availability ◽  
Series Data ◽  
Over The Counter ◽  
Yield Curves ◽  
Content Type ◽  
Market Makers ◽  
Asset Class ◽  
Market Perception

Purpose This paper aims to explore whether the market perceives liquid international sovereign sukūk as distinct from comparable bonds and as an asset class of their own that could shield investors against turbulences in the bond markets. Design/methodology/approach If sukūk and bonds belong to the same asset class, then basically the same supply and demand factors determine inverstors’ activities in both markets. This should lead to matching patterns of yield curves for sukūk and bonds comparable in terms of issuers, maturity, currency, size, liquidity and rating. Only a rough analysis of holding and trading patterns of conventional and Islamic sukūk investors was possible, as most sukūk market transactions are “over-the-counter” and not registered in the Bloomberg database. However, price information could be used for an analysis of yield curves of liquid sovereign sukūk and comparable bonds. Findings Conventional investors participate in the sukūk market, but their influence on prices is rather small, as they act primarily as intermediaries (i.e. market makers) as opposed to price setters. The yield curves of the selected bonds and sukūk widely match. This suggests that bonds and liquid sovereign sukūk belong to the same asset class. Furthermore, as turbulences in conventional markets are also reflected in the sukūk markets, Islamic investors themselves play a role in the transmission. Research limitations/implications The study of holding patterns and of the market perception of sovereign sukūk and bonds required a focus on four countries with deep and (potentially) liquid sukūk markets (Malaysia, Turkey, Indonesia and Hong Kong) and US$-denominated international securities. Some suitable combinations of sukūk and bonds are relatively young issuances with time series data for two to three years only. Data on holding patterns are sketchy and require interpretations based on market knowledge. Practical implications Parallel yield curves indicate that conventional investors do not perceive international sovereign sukūk as an asset class of their own distinct from conventional government bonds. This market perception of liquid international sovereign sukūk could have an impact on other types of sukūk (e.g. on international corporate sukūk) if sovereign sukūk are taken as pricing and performance benchmarks. Originality/value The paper sheds light on institutional investor behavior in the bond and sukūk markets and outlines data availability issues that constrain quantitative analyses in over-the-counter markets.

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