Academic Articles & Research Papers

A Multi-Frequency Tomographic Inverse Scattering Using Beam Basis Functions

We present an overview of a beam-based approach to ultra-wide band (UWB) tomographic inverse scattering, where beam-waves are used for local data-processing and local imaging, as an alternative to the conventional plane-wave and Green’s fun...

The Beginning of a Wilson Cycle in an Accretionary Orogen: The Mongol–Okhotsk Ocean Opened Assisted by a Devonian Mantle Plume

Abstract The opening of oceans within accretionary orogens is important for understanding the Wilson cycle. The Mongol–Okhotsk Ocean (MOO) began opening within the early Paleozoic accretionary collage of the Central Asian Orogenic Belt (CAO...

Basic exploration geophysics

The Search. Seismic Waves. Refracted Seismic Waves and Earth Structure. Reflected Seismic Waves and Earth Structure. Seismic Surveying. Seismic Reflection Data Processing and Interpretation. Gravity on the Earth. Gravity Surveying. Bouguer ...

Green’s functions for geophysics: a review

The Green's function (GF) method, which makes use of GFs, is an important and elegant tool for solving a given boundary-value problem for the differential equation from a real engineering or physical field. Under a concentrated source, the ...

Integrated geochemical evaluation of hydrocarbon source potential in late quaternary sediments of the Nkhata basin, Malawi

Abstract The Nkhata basin located in the central part of the Malawi rift consists of Late Quaternary (Chibanian to present;  6.02 wt% and S2 > 25.55 mg HC/g rock; 1 C: TOC up to 6.16 wt%, S2 up to 56.9 mg HC/g rock). The sediments were domi...

A novel method for imitating true-triaxial stress path with conventional triaxial apparatus

Abstract The stress paths of the cylindrical specimen in the p–q stress space by controlling the ratio of the axial and the radial loading is guaranteed to be consistent with the cuboid specimen, a novel method for imitating true-triaxial s...

Distribution and Abundance of Solar Wind‐Derived Water in Chang'E‐5 Core Samples and Its Implications

Abstract Knowledge regarding the abundance and distribution of solar wind (SW)‐sourced water (OH/H2O) on the Moon in the shallow subsurface remains limited. Here, we report the NanoSIMS measurements of H abundances and D/H ratios on soil gr...

The mechanism of excavation-induced rockbursts in ultra-thick soft-hard composite coal seams at shallow depths: an experimental study

Abstract Ultra-thick soft-hard (UTSH) composite coal seams, composed of alternating layers of soft and hard coal, frequently experience severe rockburst accidents during roadway excavation under shallow burial depths (...

Enlarging Rainfall Area of Tropical Cyclones by Atmospheric Aerosols

Abstract The size of a tropical cyclone (TC), measured by the area of either rainfall or wind, is an important indicator for the potential damage by TC. Modeling studies suggested that aerosols tend to enhance rainfall in the outer rainband...

Land and Atmosphere Precursors to Fuel Loading, Wildfire Ignition and Post‐Fire Recovery

Abstract Land surface‐atmosphere coupling and soil moisture memory are shown to combine into a distinct temporal pattern for wildfire incidents across the western United States. We investigate the dynamic interplay of observed soil moisture...

Sources of Inter‐Model Diversity in the Strength of the Relationship Between the Indian Summer Monsoon Rainfall and El Niño‐Southern Oscillation

Abstract Using 51 models of the AMIP and historical experiments of CMIP6, we investigate the inter‐model diversity of atmospheric and coupled models in the strength of the Indian Summer Monsoon Rainfall (ISMR)–El Niño‐Southern Oscillation (...

Validation of Sentinel-2 (MSI) and Sentinel-3 (OLCI) Water Quality Products in Turbid Estuaries Using Fixed Monitoring Stations

It is common in estuarine waters to place fixed monitoring stations, with the advantages of easy maintenance and continuous measurements. These two features make fixed monitoring stations indispensable for understanding the optical complexi...

Fractals and Chaos in Geology and Geophysics

The fundamental concepts of fractal geometry and chaotic dynamics, along with the related concepts of multifractals, self-similar time series, wavelets, and self-organised criticality, are introduced in this book, for a broad range of reade...

Weed Management by In Situ Cover Crops and Anaerobic Soil Disinfestation in Plasticulture

Weeds negatively affect organic vegetable crop growth and profitability. Weed management is the greatest challenge for vegetable organic growers since control options are limited for organic vegetable production. Anaerobic soil disinfestati...

The Composition and Phosphorus Cycling Potential of Bacterial Communities Associated With Hyphae of Penicillium in Soil Are Strongly Affected by Soil Origin

Intimate fungal-bacterial interactions are widespread in nature. However the main drivers for the selection of hyphae-associated bacterial communities and their functional traits in soil systems remain elusive. In the present study, baiting...

Metabolic Analysis of Carotenoids and Phenolic Compounds Found in Green and Purple Kenaf

The chemical composition of the different plant parts of green ( Hibiscus cannabinus L. cv. Jangdae) and purple ( H. cannabinus L. cv. Jeokbong) kenaf cultivars were investigated using high-performance liquid chromatography. Ten carotenoid ...

Morpho-molecular approach reveals three novel endophytic fungi in Polyschema (Pleosporales, Latoruaceae) associated with roots of baobab trees in Yunnan, China

Endophytic fungi associated with roots of the baobab tree (Adansonia digitata L.) remain poorly documented in terms of species diversity worldwide. During an ongoing fungal survey in the dry-hot valleys of Honghe (Yunnan Province, China), f...

Eleven years’ data of grassland management data in Germany

Dynamics of Agriculture Subject Guides Usage at KSU Libraries [Abstract only] 

Scanning library literature, we found that there were few studies on how online library subject guides were used. One reason may be because librarians have only recently begun to publish their subject guides online. With the start of the ne...

Phytochemical Composition and Antibacterial Activity of <i>Barleria albostellata</i> C.B. Clarke Leaf and Stem Extracts

Barleria albostellata (Acanthaceae) is a shrub located in South Africa and is relatively understudied. However, plants within this genus are well known for their medicinal and ethnopharmacological properties. This study aimed to characteris...