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Water on/in Mars and the Moon
Springer Science and Business Media LLC - Tập 33 - Trang 1-6 - 2022
The speculation of an ancient ocean, river and lake on Mars, the observation of geological features andthe findings of H2O on the Martian surface, and the detection of a “water lake” beneath 1.5 km in Mars are all consistent with the scenario of water envisaged earlier by Liu (Phys Earth Planet Inter 49: 142–167, 1987; Icarus 74: 98–107, 1988). Unless sealed in cavities, liquid water or naked ice ......
Seismogenic structure beneath the northern Longitudinal Valley revealed by the 2018–2021 Hualien earthquake sequences and 3-D velocity model
Springer Science and Business Media LLC - Tập 33 - Trang 1-17 - 2022
This study uses the 3D crustal velocity model and the relocated earthquake hypocenters, including the 2018–2021 earthquake sequences, to re-assess the seismogenic structures at the northern Longitudinal Valley. Earthquake focal mechanisms and relocated hypocenters from earthquake clusters suggest a gentle west-dipping fault existing under the Longitudinal Valley and the Coastal Range. Earthquake c......
COSMIC-2 soundings impacts on a RO-based NOAA microwave satellite data quality monitoring system
Springer Science and Business Media LLC - Tập 33 - Trang 1-25 - 2022
The Constellation Observing System for Meteorology, Ionosphere and Climate-2/Formosa Satellite Mission 7 (COSMIC-2) Global Navigation Satellite System (GNSS) Radio Occultation (RO) constellation is the follow-on to the highly successful COSMIC-1 program. The GNSS RO atmospheric soundings have historically been used to generate Community Radiative Transfer Model simulated background (B) microwave (......
Comparative analysis among Asia–Pacific geoid models stored at the ISG repository
Springer Science and Business Media LLC - Tập 33 - Trang 1-11 - 2022
Geoid models have important applications in geosciences as well as engineering, for example, for the conversion from ellipsoidal heights observed by GNSS techniques to orthometric heights. To meet the user’s demands, the International Service for the Geoid (ISG,
https://www.isgeoid.polimi.it/......
Developing innovative and cost-effective UAS-PPK module for generating high-accuracy digital surface modelAbstract Traditional indirect georeferencing requires time-consuming and labor-intensive field surveys to obtain ground control points (GCPs), making it challenging to apply in high-risk areas with limited accessibility. This study proposes a novel and low-cost system for direct georeferencing using unmanned aerial system post-processing kinematics (UAS-PPK), which ... ...
Springer Science and Business Media LLC - - 2023
Climatology of developing and nondeveloping disturbances for tropical cyclone genesis over the western North Pacific
Springer Science and Business Media LLC - Tập 33 - Trang 1-14 - 2022
Tropical disturbances play an important role in the formation of tropical cyclones (TCs), but their climate characteristics are still poorly understood. The present study investigated the characteristics of tropical disturbances over the western North Pacific (WNP) for the period 1965–2020 using the reanalysis datasets. An algorithm based on the threshold of synoptic-scale vorticity and convection......
Development and evaluations of the broadband ocean bottom seismometer (Yardbird-BB OBS) in Taiwan
Springer Science and Business Media LLC - Tập 35 - Trang 1-12 - 2024
This study focuses on developing and evaluating the broadband ocean bottom seismometer (Yardbird-BB OBS) in Taiwan. The Yardbird-BB OBS is a crucial instrument for recording seismic signals in deep-sea environments. Rigorous testing ensures optimal performance and data recording capabilities. Following assembly, the Yardbird-BB OBS undergoes a 3–6 month deployment test in the deep sea, capturing s......
The first 30 min hidden aftershocks of the 2022 September 17, ML 6.4, Guanshan, Taiwan earthquake and its seismological implications
Springer Science and Business Media LLC - Tập 35 - Trang 1-14 - 2024
The first 30 min of the aftershock sequence following the 2022 September 17, ML 6.4, Guanshan, Taiwan earthquake is investigated by the back-projection (BP) method. Based on the Automatic Gain Control (AGC) to process individual earthquake record and sort waveforms by epicentral distance, 80 events are identified near the Guanshan earthquake epicenter to verify its temporal variation. However, mos......
The VLF-induced ionospheric perturbations detected by DEMETER during solar minimum
Springer Science and Business Media LLC - Tập 34 - Trang 1-12 - 2023
The VLF-induced ionospheric heating events from the powerful transmitter NWC are collected at extremely low solar activity years of 2008–2009, and their spatial and temporal distribution features are investigated. The spatial distribution of heating signals exhibits clear north-direction inclination of 2–3°, and covering area within 300 km radius in longitude and latitude. Plasma parameters show t......
The impact of El Niño southern oscillation and Indian Ocean Dipole on the burned area in Indonesia
Springer Science and Business Media LLC - Tập 33 - Trang 1-17 - 2022
Land and forest fire have been identified as one of the main problems contributing to forest biodiversity and Global Warming and well known as the phenomenon affected by El Niño Southern Oscillation (ENSO) and Indian Ocean Dipole (IOD). The total burned area becomes higher when either El Niño or positive IOD occur. This research aims to analyze and quantify the direct correlation of the Niño 3.4 a......
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