Results 11 to 20 of about 145,192 (165)

Assessment of drought conditions using HJ-1A/1B data: a case study of Potohar region, Pakistan

open access: yesGeomatics, Natural Hazards & Risk, 2018
Drought is a natural disaster which causes global damages and affects people. In this work, a comparative study of different drought indices such as Normalized Difference Vegetation Index (NDVI), Deviation NDVI (DevNDVI), Vegetation Condition Index (VCI)
Adnan Aziz   +8 more
doaj   +1 more source

A newly-developed system for countinuous measurements of atmospheric CO2 concentration at Syowa Station, Antarctica

open access: yesAntarctic Record, 1984
A new apparatus for in situ continuous measurements of atmospheric CO_2 concentration at Syowa Station, Antarctica was developed using a non-dispersive infrared CO_2 analyzer with a precision better than ±0.01ppm. Standard gases employed were CO_2 in air
Masayuki Tanaka   +5 more
doaj   +1 more source

Landuse and Community-Based Assessment of 2014 Flood Damages in Tehsil Phalia, Punjab

open access: yesInternational Journal of Economic and Environment Geology, 2020
In this study the response and feedback from the flood-hit community of Phalia (Mandi Bahauddin) obtained through local interviews and filling of questionnaires have been analyzed.
Sikandar Hussain, Anum Liaqut, Saima Siddiqui, Isma Younes, Muhammad Shafiq
doaj   +1 more source

Using Multi-Mission Satellite Elevation Data for Delineation of Gilgit Watershed in Pakistan in Geographical Information Technology Environment

open access: yesInternational Journal of Economic and Environment Geology, 2020
The hydro-climatological variations in Gilgit watershed of Upper Indus basin is less scientifically understood due to diverse geography, remoteness of the region and larger variations in climatic conditions. Extraction of catchments at multiple scales is
Muhammad Shafiq, Muhammad Irfan, Mehrab Khan
doaj   +1 more source

Arctic stratosphere changes in the 21st century in the Earth system model SOCOLv4

open access: yesFrontiers in Earth Science, 2023
Two ensemble simulations of a new Earth system model (ESM) SOCOLv4 (SOlar Climate Ozone Links, version 4) for the period from 2015 to 2099 under moderate (SSP2-4.5) and severe (SSP5-8.5) scenarios of greenhouse gas (GHG) emission growth were analyzed to ...
Pavel Vargin   +12 more
doaj   +1 more source

Segmentation of PMSE Data Using Random Forests

open access: yesRemote Sensing, 2022
EISCAT VHF radar data are used for observing, monitoring, and understanding Earth’s upper atmosphere. This paper presents an approach to segment Polar Mesospheric Summer Echoes (PMSE) from datasets obtained from EISCAT VHF radar data. The data consist of
Dorota Jozwicki   +3 more
doaj   +1 more source

Neotectonics of Zindapir Anticline and Sulaiman Fold and Thrust Belt: Inferences from SRTM DEM

open access: yesInternational Journal of Economic and Environment Geology, 2020
The current study deals with the significance of surface dynamics (SDs) and its relationship to tectonics and active erosion in Zindapir Anticline (ZPA) and neighboring Sulaiman Fold and Thrust Belt (SFTB) which is a direct result of ...
Jahanzeb Qureshi, Syed Amer Mahmood, Muhammad Khubaib Abuzar, Amer Masood, Muhammad Shafiq
doaj   +1 more source

Observations and model calculations of an additional layer in the topside ionosphere above Fortaleza, Brazil [PDF]

open access: yesAnnales Geophysicae, 1997
Calculations using the Sheffield University plasmasphere ionosphere model have shown that under certain conditions an additional layer can form in the low latitude topside ionosphere.
B. Jenkins   +5 more
doaj   +1 more source

Planning for Observations of the Plasma Waves by Sounding Rockets in Antarctica

open access: yesAntarctic Record, 1975
The plasma wave observations in the polar ionosphere consist of two categories; the first is for the emission due to the particle precipitation and the second is for the emissions that are thought to be generated in the magnetosphere as a result of the ...
Hiroshi OYA
doaj   +1 more source

Seasonal and spatial patterns of SST in the northern Arabian Sea during 2001–2012

open access: yesEgyptian Journal of Remote Sensing and Space Sciences, 2016
Ocean–atmosphere interactions have been increasingly acknowledged to play an important role in climate change. It is necessary to understand ocean behavior, including the sea surface temperature (SST) that is a basis for initiating atmospheric models and
Sher Muhammad   +3 more
doaj   +1 more source

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