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ISSN: 1674-9847
CN: 42-1806/P

Coseismic fault model of the 2017 MW 6.5 Jiuzhaigou earthquake and implications for the regional fault slip pattern

On August 8, 2017, an MW 6.5 earthquake occurred in Jiuzhaigou County, Sichuan Province, China, on the eastern margin of the Qinghai–Tibet Plateau. This study investigates the coseismic deformation...

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A review of methods for mitigating ionospheric artifacts in differential SAR interferometry

Interferometric synthetic aperture radar (InSAR) has been widely used to measure ground displacements related to geophysical and anthropic activities over the past three decades. Satellite SAR systems...

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Co- and post-seismic slip analysis of the 2017 MW7.3 Sarpol Zahab earthquake using Sentinel-1 data

The MW7.3 Sarpol Zahab earthquake that occurred in the Zagros Fold-Thrust Belt (ZFTB) of Iran on November 12, 2017 is the largest earthquake instrumentally recorded in the region. This earthquake provides...

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Sedimentary facies interpretation of Gamma Ray (GR) log as basic well logs in Central and Lower Indus Basin of Pakistan

Rocks and most type of soils emit Gamma Ray (GR) in varying amount. The emitting elements of primary gamma radiations include potassium 40, uranium, and thorium which are associated with rocks forming...

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Review of the SBAS InSAR Time-series algorithms, applications, and challenges

In the past 30 years, the small baseline subset (SBAS) InSAR time-series technique has emerged as an essential tool for measuring slow surface displacement and estimating geophysical parameters. Because...

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Evidences of the expanding Earth from space-geodetic data over solid land and sea level rise in recent two decades

According to the space-geodetic data recorded at globally distributed stations over solid land spanning a period of more than 20-years under the International Terrestrial Reference Frame 2008, our previous...

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Determination of altitudes of the three main Ecuadorian summits through GNSS positioning

Determining the altitude of mountains is one of the most fundamental challenges for humankind. Therefore, the main objective of the study is to determine the altitudes of the three main summits in Ecuador...

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Damping modification factors for acceleration response spectra

DMF (Damping modification factors) are used to modify elastic response spectral values corresponding to damping ratio 5% to other damping levels. The influence of seismological parameters (magnitude,...

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Land surface temperature and spectral indices: A seasonal study of Raipur City

This case study evaluates the seasonal variability of the Pearson's linear correlation coefficient of land surface temperature (LST) with some spectral indices like NDVI, NDWI, NDBI, and NDBaI by using...

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Quality assessment of Continuous Operating Reference Stations (CORS) - GPS stations in Mexico

The present analysis provided the quality assessment of 65 Continuous Operating Reference Stations (CORS) situated in and around Mexico using the data of about ten years (January 2010 to January 2020)....

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Mitigation of time-series InSAR turbulent atmospheric phase noise: A review

Synthetic Aperture Radar (SAR) interferometry is one of the most powerful remote sensing tools for ground deformation detection. However, tropospheric delay greatly limits the measurement accuracy of...

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Quaternary tectonic history of seismically active intraplate Kachchh Rift Basin, western India: A review

Since the recorded historical period, the Kachchh Rift Basin (KRB) has encountered numerous moderate to large magnitude earthquakes. According to the series of seismicity research so far, there are...

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Determination of Istanbul geoid using GNSS/levelling and valley cross levelling data

The Istanbul GPS Triangulation Network (IGTN) and the Istanbul Levelling Network (ILN), established in 2006, provide data for the determination of a local GNSS/levelling geoid model. These networks'...

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Extraction and analysis of saline soil deformation in the Qarhan Salt Lake region (in Qinghai, China) by the sentinel SBAS-InSAR technique

The instability of saline soil foundation affects the safety of artificial construction, and may cause ground collapse, building destruction and road damage. It is fundamental to reduce the potential...

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A novel fast classification filtering algorithm for LiDAR point clouds based on small grid density clustering

Clustering filtering is usually a practical method for light detection and ranging (LiDAR) point clouds filtering according to their characteristic attributes. However, the amount of point cloud data...

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Studies on earthquake precursors in China: A review for recent 50 years

Since the 1960s, China has been conducting a persistent and systematic observation and monitoring experiment to falsify the hypothesis of premonitory anomalies and the predictability of earthquakes...

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Assessment of geodetic strain and stress variations in Nepal due to 25 April 2015 Gorkha earthquake: Insights from the GNSS data analysis and b-value

A magnitude MW7.8 earthquake occurred on 25 April 2015 (referred as Gorkha earthquake). We have analyzed the spatial variation of b-value and two-dimensional strain within Nepal Himalaya before and...

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Positioning performance analysis on combined GPS/BDS precise point positioning

Combining the observation data from five Multi-GNSS Experiment (MGEX) stations with the precise orbit and clock products from Global Positioning System (GPS) and BeiDou Navigation Satellite System (BDS),...

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Crustal deformation measurements by global positioning system (GPS) along NSL, western India

The Narmada Son Lineament (NSL) is a major palaeo-rift system and seismically active intra-plate region. In this paper, we processed and analyzed the GPS data from 2009 to 2016 to study the geodynamic...

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GRACE-based estimates of groundwater variations over North America from 2002 to 2017

GRACE-based estimates for groundwater storage (GWS) changes in North America substantially depend upon correction of glacial isostatic adjustment (GIA) effects, which are usually removed with GIA models....

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Manifestation of earthquake preparation zone in the ionosphere before 2021 Sonitpur, Assam earthquake revealed by GPS-TEC data

Global Positioning System (GPS) Continuously Operating Reference Station (CORS) data analysis shows that the ionosphere's electron density variability is linked to the deformation and stress accumulation...

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Automated Burris gravity meter for single and continuous observation

The Burris Gravity Meter™ manufactured by ZLS Corporation, Austin/Texas, USA, is based on the invention of L&R (L. LaCoste and A. Romberg): The ZLS (zero-length spring). A digital feedback system (range...

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Relative active tectonics evaluation using geomorphic and drainage indices, in Dadra and Nagar Haveli, western India

The present study area, Dadra and Nagar Haveli, contains several lineaments and traces of active faults. The various aspect of the geomorphic analysis, i.e., stream length (SL) gradient, hypsometric...

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A tectonic geodesy mapping software based on QGIS

To overcome the high cost of learning, non-visual operation, and cumbersome steps of fine-tuning map elements in Generic Mapping Tools (GMT) and other geoscience mapping softwares, we present the Tectonic...

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The principal moments of inertia calculated with the hydrostatic equilibrium figure of the Earth

As an indication of the Earth's mass distribution, the principal moments of inertia (PMOI, i.e., A, B, C) of the Earth are the basic parameters in studies of the global dynamics of the earth, like earth...

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