Radioactivity monitoring in the vicinity of Jawalamukhi thrust NW Himalaya,India for tectonic study

Natural Hazards - This work reports radon-thoron monitoring at two depths (60 and 90 cm) and at 82 sites around Jawalamukhi thrust of NW Himalaya, India using Solid State Nuclear Track...     

New estimates of potential impacts of sea level rise and coastal floods in Poland

Natural Hazards - Polish coastal zone is thought to be one of the most exposed to sea level rise in Europe. With mean sea levels expected to increase between 28 and 98 cm by the end of the...     

On Braking Mechanisms in Radio Pulsars

Astronomy Reports - The dependence dP/dt(P) is analyzed for three groups of pulsars with different period values: P > 2 s, 0.1 s < P < 2 s, and P...     

Reconnaissance report on geotechnical effects and structural damage caused by the 3 January 2017 Tripura earthquake,India

Natural Hazards - An earthquake of moment magnitude Mw 5.7 shook the northeastern region of India on 3 January 2017 at 14 h:39 min:0.5 s local time. The duration of the...     

Heat flow–heat production relationship not found: what drives heat flow variability of the Western Canadian foreland basin?

International Journal of Earth Sciences - Heat flow high −80 ± 10 mW/m2 in the northern western parts of the Western Canadian foreland basin is in large...     

Effect of dehydration on the electrical conductivity of phyllite at high temperatures and pressures

Mineralogy and Petrology - The electrical conductivity of phyllite (measured in situ at 0.5–2.5 GPa and 773–1173 K) increases with increasing temperature, satisfying...     

Impact of urbanization on hydrological processes under different precipitation scenarios

Natural Hazards - According to analysing the trends of land use changes in the upper reaches of Minjiang River in the past 30 years and precipitation in the last 50 years, nine...     

Zinc-rich and copper-bearing amphiboles from sulfide-free ore occurrences of the Pelagonian Massif,Republic of North Macedonia

Mineralogy and Petrology - This paper describes specific features of isomorphism of unusual amphiboles containing up to 23 wt% ZnO and up to 1.3 wt% CuO from sulfide-free...     

New insights into the delayed initiation of a debris flow in southwest China

Natural Hazards - On 6 July 2020, 3 h 40 min after rainfall stopped, a delayed debris-flow disaster occurred due to colluvium deposits in a hollow region (CDH) in the...     

Diurnal soil water dynamics in the shallow vadose zone (field site of China University of Geosciences,China)

Because of the relatively low soil moisture in arid or semi-arid regions, water vapour movement often predominates in the vadose zone and affects the partitioning of energy among various land surface fluxes. In an outdoor sand bunker experiment, the soil water content at 10 and 30 cm depth were measured at hourly intervals for 2.5 days during October 2004. It was found that the soil moisture reached the daily maximum value (5.9–6.1% at 10 cm and 11.9–13.1% at 30 cm) and minimum value (4.4–4.5% at 10 cm and 10.4–10.8% at 30 cm) at midday (0–1 p.m. for 10 cm and 2–3 p.m. for 30 cm) and before dawn (2–3 a.m. for 10 cm and 4–5 a.m. for 30 cm), respectively. The modified HYDRUS-1D code, which refers to the coupled water, water vapour and heat transport in soil, was used to simulate the moisture and water vapour flow in the soil. The numerical analyses provided insight into the diurnal movement of liquid water and water vapour driven by the gradients of pressure heads and temperatures in the subsurface zone. The simulated temperature and water content were in good agreement with the measured values. The spatial–temporal distribution of liquid water flux, water vapour flux and soil temperature showed a detailed diurnal pattern of soil water dynamics in relatively coarse sand. Electronic supplementary material  The online version of this article (doi:) contains supplementary material, which is available to authorized users.     

Geochemical Characteristics and Genesis Analysis of Deju Basalt in Midu County,Western Yunnan

Doklady Earth Sciences - Deju basalts is a characteristic volcanic association and was first founded in the 1 : 50 000 regional geological survey. There is no previous...     

On the Dynamics of Phase Transitions in Relativistic Scalar Field Theory

Astronomy Reports - We study the Kibble–Zurek scaling dynamics and universal second order phase transitions in a relativistic scalar field theory in 1 + 1 dimensions. Using...     

Gravimetric and magnetic fabric study of the Sintra Igneous complex: laccolith-plug emplacement in the Western Iberian passive margin

International Journal of Earth Sciences - The geometry and emplacement of the ~ 96 km2, Late Cretaceous Sintra Igneous complex (SIC, ca. 80 Ma) into the West Iberian passive...     

Vertical distribution and source identification of polycyclic aromatic hydrocarbons in anoxic sediment cores of Chini Lake, Malaysia: Perylene as indicator of land plant-derived hydrocarbons

Four anoxic sediment cores were collected from Chini Lake, Malaysia in order to investigate the variability of polycyclic aromatic hydrocarbon (PAH) and perylene concentrations. The study also determined significant differences of perylene concentrations in different sediment layers. Total PAH concentrations ranged from 248 to 8098 ng g⁻¹ in the samples. Diagnostic PAH ratios such as methylphenanthrenes/phenanthrene (MP/P), phenanthrene/anthracene (P/A) and fluoranthene/(fluoranthene + pyrene) (Fl/(Fl + Py) revealed a dominance of pyrogenic influences and partial petrogenic inputs to the top sediment layers. Perylene concentrations were high in the top layers (<12 cm) and increased with increasing depth. There is a significant positive correlation (r = 0.705, p = 0.01) between perylene concentrations and TOC. Analysis of variance (ANOVA) and LSD revealed significant differences (p < 0.05) in TOC-normalized perylene concentrations between the upper (<12 cm) and bottom layers (>12 cm). The average perylene concentrations accounted for 26–50% (0–12 cm) and 50–77% (12–36 cm) of pentacyclic-aromatic hydrocarbon isomers (PAI) present whereas it made up 10–34% (0–12 cm) and 46–66% (12–36 cm) of the total PAH. The average pyrene concentrations decreased with increasing depth and accounted for 62% (0–3 cm), 20–23% (3–12 cm) and 3–1.4% (12–36 cm) of perylene present. The results of hierarchical cluster analysis based on these ratios suggested different input sources for the top and bottom layers. It is concluded that the activity of termites on woody plants produced perylene which is supplied to the lake by run-off from the heavy and frequent rains in this Asian tropical climate. In addition, there was also in situ formation of perylene in the bottom layers due to diagenetic processes.     

Ba- and Ti-rich oxymica from nephelinites in the Middle Atlas Volcanic Province,northern Morocco

Mineralogy and Petrology - A Ba- and Ti-rich mica (up to 14.0&nbsp;wt% BaO and 13.1&nbsp;wt% TiO2) occurs in nephelinites from the Middle Atlas Volcanic Province, Morocco. The rocks show a...     

A source and ground motion study of earthquakes in and near Delhi (the National Capital Region), India

Natural Hazards - We study source parameters of 10 local earthquakes (2.7 ≤&nbsp; $$M_{w}$$ ≤&nbsp;4.5) that have occurred in the National Capital Region (NCR) since 2001 and...     

Darwin’s deep well at Down House,England (UK)

Hydrogeology Journal - When Charles Darwin moved to Down House, England (UK), in 1842, he inherited a deep well, penetrating 325&nbsp;ft (~100&nbsp;m) into the Chalk. The groundwater from...     

Batisite,Na2BaTi2(Si4O12)O2, from Inagli massif,Aldan, Russia: crystal-structure refinement and high-temperature X-ray diffraction study

Mineralogy and Petrology - The crystal structure of batisite, Na2BaTi2 (Si4O12)O2, from the Inagli massif (Aldan, Yakutia, Russia) was refined to R 1&nbsp;=&nbsp;0.032 for 1449 unique...     

Genetic relationship between deformation and low-Ca content in olivine from magmatic systems: evidence from the Poyi ultramafic intrusion,NW China

Mineralogy and Petrology - The deformation features (e.g., undulose extinction and subgrain boundaries) and low Ca content (&lt;1000&nbsp;ppm) of high-Fo olivine have been widely used as...     

Assessment of co-seismic landslide hazard using the Newmark model and statistical analyses: a case study of the 2013 Lushan,China, Mw6.6 earthquake

Natural Hazards - The April 20, 2013 Mw6.6 earthquake of Lushan County, Sichuan Province, China, has triggered 4540 landslides (&gt;?1000&nbsp;m2). Exploring a more effective method...