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

Luzana Kamtangwala, Solomon Adeniyi Adekola, Jerome Edafe Asedegbega • Discover Geoscience (2025)

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...

DOAJ Open Access (DOAJ) DOI: 10.1007/s44288-025-00267-7

Anomalous effect in Schumann resonance phenomena observed in Japan, possibly associated with the Chi-chi earthquake in Taiwan

M. Hayakawa, K. Ohta, A. P. Nickolaenko, A. P. Nickolaenko et al. • Annales Geophysicae (2005)

The Schumann resonance phenomenon has been monitored at Nakatsugawa (near Nagoya) in Japan since the beginning of 1999, and due to the occurance of a severe earthquake (so-called Chi-chi earthquake) on 21 September 1999 in Taiwan we have...

DOAJ Open Access (DOAJ) DOI: 10.5194/angeo-23-1335-2005

Comparison of the GOSAT TANSO-FTS TIR CH volume mixing ratio vertical profiles with those measured by ACE-FTS, ESA MIPAS, IMK-IAA MIPAS, and 16 NDACC stations

K. S. Olsen, K. Strong, K. A. Walker, K. A. Walker et al. • Atmospheric Measurement Techniques (2017)

The primary instrument on the Greenhouse gases Observing SATellite (GOSAT) is the Thermal And Near infrared Sensor for carbon Observations (TANSO) Fourier transform spectrometer (FTS). TANSO-FTS uses three short-wave infrared (SWIR) band...

DOAJ Open Access (DOAJ) DOI: 10.5194/amt-10-3697-2017

Pb, Sr, and Nd isotopic characteristics of a variety of lithologies from the Guerrero composite terrane, west-central Mexico: constraints on their origin

Adriana Potra, Rosemary Hickey-Vargas, Andrew W. Macfarlane, Vincent J.M. Salters • Revista Mexicana de Ciencias Geológicas (2015)

Análisis isotópicos de Pb, Sr y Nd de rocas mesozoicas y cenozoicas de la parte sur del terreno Guerrero en México contribuyen una mejor comprensión de su origen. Rocas metamórficas colectadas al sur de Arteaga (terreno Zihuatanejo) tienen ...

DOAJ Open Access (DOAJ)

Multitask Learning Mechanism for Remote Sensing Image Motion Deblurring

Jie Fang, Xiaoqian Cao, Dianwei Wang, Shengjun Xu • IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing (2021)

As a fundamental preprocessing technique, remote sensing image motion deblurring is important for visual understanding tasks. Most conventional approaches formulate the image motion deblurring task as a kernel estimation. Because the kernel...

DOAJ Open Access (DOAJ) DOI: 10.1109/JSTARS.2020.3047636

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

Xuefeng Li, Zhigang Ma • Geomechanics and Geophysics for Geo-Energy and Geo-Resources (2024)

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...

DOAJ Open Access (DOAJ) DOI: 10.1007/s40948-024-00781-x

Turbulence properties and kinetic signatures of electrons in Kelvin-Helmholtz waves during a geomagnetic storm

Harsha Gurram, Harsha Gurram, Jason R. Shuster, Li-Jen Chen et al. • Frontiers in Astronomy and Space Sciences (2026)

The Kelvin–Helmholtz instability (KHI), in its nonlinear phase, plays a significant role in transporting solar-wind plasma into Earth’s magnetosphere. This study investigates the turbulence properties and reconnection signatures observed at...

DOAJ Open Access (DOAJ) DOI: 10.3389/fspas.2026.1788081

Terrestrial Remote Sensing of Snowmelt in a Diverse High-Arctic Tundra Environment Using Time-Lapse Imagery

Daniel Kępski, Bartłomiej Luks, Krzysztof Migała, Tomasz Wawrzyniak et al. • Remote Sensing (2017)

Snow cover is one of the crucial factors influencing the plant distribution in harsh Arctic regions. In tundra environments, wind redistribution of snow leads to a very heterogeneous spatial distribution which influences growth conditions f...

DOAJ Open Access (DOAJ) DOI: 10.3390/rs9070733

Assessment of climate change impact on wheat crop using MarkSim GCM in Varanasi, Uttar Pradesh

C. PATEL, A.K. NEMA, R.S. SINGH, M.K. YADAV et al. • Journal of Agrometeorology (2018)

GFLD-CM3 model was used to generate weather data under RCPs scenario i.e. RCP 2.6, 4.5, 6.0 and 8.5 for years 2010, 2035, 2065 and 2095 for Varanasi, Uttar Pradesh. The generated data were used to assess the impact of climate change on phen...

DOAJ Open Access (DOAJ) DOI: 10.54386/jam.v20i3.547

Settlement process of radioactive dust to the ground inferred from the atmospheric electric field measurement

M. Yamauchi, M. Takeda, M. Makino, T. Owada et al. • Annales Geophysicae (2012)

Radioactive materials from the accident at Fukushima Dai-ichi nuclear power plant (FNPP) in March 2011 spread over a large area, increasing the atmospheric electric conductivity by their ionizing effect, and reducing the vertical (downwa...

DOAJ Open Access (DOAJ) DOI: 10.5194/angeo-30-49-2012

The impact of earthquakes on the regime of ultra-low-frequency electromagnetic emissions

B. V. Dovbnya, A. S. Potapov, R. A. Rahmatulin • Геофизический журнал (2012)

Anomalous changes in the behavior of Pc 1 geomagnetic pulsations and oscillations with the spectrum resonance structure (SRS) occurred a few minutes before or after an earthquake have been found. In all cases the changes happened following ...

DOAJ Open Access (DOAJ) DOI: 10.24028/gzh.0203-3100.v34i5.2012.116667

The Integrity and Tightness of Underground Hydrogen Storage Systems: A Critical Review of Geological Barriers, Well Sealing, Leakage Risks and Future Perspectives

Hanae Talouizet, Latifa Ouadif, Safouane Kitri • Hydrogen (2026)

Underground storage of green hydrogen is a strategic enabler of large-scale renewable deployment, but its feasibility rests on a hard problem: keeping a small, highly mobile molecule confined underground for decades without safety or enviro...

DOAJ Open Access (DOAJ) DOI: 10.3390/hydrogen7030116

Surface and Subsurface Biogeochemical Impacts of the 2019 Northeast Pacific Marine Heatwave

C. Kohlman, S. Mogen, J. T. Cohen, J. Araujo et al. • Geophysical Research Letters (2025)

Abstract Following the highly impactful 2013–2016 Marine Heatwave (MHW), another MHW occurred in the Northeast Pacific during summer 2019. While the physical drivers of this event are well described, its biogeochemical impacts remain poorly...

DOAJ Open Access (DOAJ) DOI: 10.1029/2025GL115230

Water Tank Experiments on Stratified Flow over Double Mountain-Shaped Obstacles at High-Reynolds Number

Ivana Stiperski, Stefano Serafin, Alexandre Paci, Hálfdán Ágústsson et al. • Atmosphere (2017)

In this article, we present an overview of the HyIV-CNRS-SecORo (Hydralab IV-CNRS-Secondary Orography and Rotors Experiments) laboratory experiments carried out in the CNRM (Centre National de Recherches Météorologiques) large stratified wa...

DOAJ Open Access (DOAJ) DOI: 10.3390/atmos8010013

top-ii-vol: Massively Parallel Scalable Meshing for Seismic Risk Assessment of Nuclear Sites

Badri M.A., Bourcier C., Foerster E. • EPJ Web of Conferences (2024)

High performance computing is widely used for conducting high-resolution geophysics Finite Element Method (FEM) simulations. These simulations are crucial for risk assessment at nuclear sites and help gain deeper insights into underlying ph...

DOAJ Open Access (DOAJ) DOI: 10.1051/epjconf/202430205007

THE OVERVIEW OF THE PLANETARY ATMOSPHERIC SPECTRAL TELESCOPE (PAST) IN THE SCIENTIFIC EXPERIMENTAL SYSTEM IN NEAR-SPACE (SENSE)

Q. Meng, F. He, W. Zhao, K. Wang et al. • The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences (2019)

To investigate mass transport and energy dissipation in space environments for solar system planet, a balloon-borne planetary atmospheric spectral telescope (PAST) is designed with 0.8-m aperture in spectral range from 280 nm to 680&...

DOAJ Open Access (DOAJ) DOI: 10.5194/isprs-archives-XLII-2-W13-1419-2019

Crustal rheology controls on the Tibetan plateau formation during India-Asia convergence

Lin Chen, Fabio A. Capitanio, Lijun Liu, Taras V. Gerya • Nature Communications (2017)

Tibetan plateau deformation is variable, but what controls those variations is still poorly understood. Here, the authors use 3D numerical models to show that the variations observed in lithosphere deformation are controlled by heterogeneit...

DOAJ Open Access (DOAJ) DOI: 10.1038/ncomms15992

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

Heng‐Ci Tian, Jialong Hao, Yangting Lin, Yuchen Xu et al. • Geophysical Research Letters (2024)

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...

DOAJ Open Access (DOAJ) DOI: 10.1029/2023GL107005

Temporal and Spatial Analysis of Coastal Landscape Patterns Using the GEE Cloud Platform and Landsat Time Series

Chao Chen, Jintao Liang, Taohua Ren, Yi Wang et al. • IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing (2024)

Owing to the rapid urbanization combined with global climate change, dramatic land-use change in coastal watersheds is occurred, which, in turn, cause the evolution of landscape patterns and threaten the valuable but fragile ecosystem. The ...

DOAJ Open Access (DOAJ) DOI: 10.1109/JSTARS.2024.3473937