scholarly journals Landslide Monitoring using Inclinometer with Micro Electromechanical System (MEMS)

2021 ◽  
Vol 873 (1) ◽  
pp. 012024
Author(s):  
Tedy Setiawan ◽  
Fatkhan ◽  
Ramadhani Yasyfi Cysela
Keyword(s):  
Low Cost ◽  
Volcanic Eruptions ◽  
Electromechanical System ◽  
Landslide Monitoring ◽  
Data Logger ◽  
Motion Data ◽  
The Pacific ◽  
Tectonically Active ◽  
Emergency Risk Management ◽  
Micro Electromechanical System

Abstract Being located on the Pacific Ring of Fire and a tectonically active country, Indonesia has to cope with the constant risk of volcanic eruptions, earthquakes, floods and landslides. Landslides and other mass movements are serious geo-environmental hazards in Indonesia. Following report from the Indonesia National Disaster Management Authority (BNPB), landslides are among high disaster death toll throughout the archipelago. It claimed 248 lives last year alone. The number of landslides in Indonesia increase steadily to 376 in 2014 from 291 in 2012. Hence, landslide monitoring system is required to determine style of landslide movement, for risk and even emergency risk management assessments and to assist with the design of mitigation works. A landslide instrumentation program including an inclinometer is designed for landslide monitoring. The inclinometer, or tilt sensor, is an instrument used for measuring slope, tilt, or inclination. In this paper we use Micro Electromechanical System (MEMS) as a sensor to measure changes in an angle. Then information is transferred to a central server soon after real-time accelerations are monitored. A data logger also used as a data recording. With low-cost MEMS accelerometers, the results show this instrument is able to provide reliable ground-motion data in network-scale deployments.

A fractal micro-electromechanical system and its pull-in stability

2021 ◽  
pp. 146134842098404
Author(s):  
Dan Tian ◽  
Chun-Hui He
Keyword(s):  
Fractal Model ◽  
Electromechanical System ◽  
Normal Operation ◽  
Fractal Derivative ◽  
Operation Period ◽  
Micro Electromechanical System

Pull-in instability occurs in a micro-electromechanical system, and it greatly hinders its normal operation. A fractal modification is suggested to make the system stable in all operation period. A fractal model is established using a fractal derivative, and the results show that by suitable fabrication of the micro-electromechanical system device, the pull-in instability can be converted into a novel state of pull-in stability.

scholarly journals Brief Communication: A low-cost Arduino<sup>®</sup>-based wire extensometer for earth flow monitoring

2017 ◽  
Vol 17 (6) ◽  
pp. 881-885 ◽  
Author(s):  
Luigi Guerriero ◽  
Giovanni Guerriero ◽  
Gerardo Grelle ◽  
Francesco M. Guadagno ◽  
Paola Revellino
Keyword(s):  
High Reliability ◽  
Low Cost ◽  
Mitigation Measures ◽  
Thermal Drift ◽  
Data Logger ◽  
Test Configuration ◽  
Flow Monitoring ◽  
Earth Flow ◽  
Flow Displacement ◽  
Additional Monitoring

Abstract. Continuous monitoring of earth flow displacement is essential for the understanding of the dynamic of the process, its ongoing evolution and designing mitigation measures. Despite its importance, it is not always applied due to its expense and the need for integration with additional sensors to monitor factors controlling movement. To overcome these problems, we developed and tested a low-cost Arduino-based wire-rail extensometer integrating a data logger, a power system and multiple digital and analog inputs. The system is equipped with a high-precision position transducer that in the test configuration offers a measuring range of 1023 mm and an associated accuracy of ±1 mm, and integrates an operating temperature sensor that should allow potential thermal drift that typically affects this kind of systems to be identified and corrected. A field test, conducted at the Pietrafitta earth flow where additional monitoring systems had been installed, indicates a high reliability of the measurement and a high monitoring stability without visible thermal drift.

High-resolution radiocarbon dating to reconstruct last century environmental changes in the pacific island of Espiritu Santo

2021 ◽  
Author(s):  
Giorgia Camperio ◽  
Caroline Welte ◽  
S. Nemiah Ladd ◽  
Matthew Prebble ◽  
Nathalie Dubois
Keyword(s):  
High Resolution ◽  
Radiocarbon Dating ◽  
Environmental Changes ◽  
Accumulation Rate ◽  
Sediment Cores ◽  
Volcanic Eruptions ◽  
High Accumulation ◽  
Sedimentary Records ◽  
The Pacific ◽  
Rapid Accumulation

&lt;p&gt;Espiritu Santo is one of the 82 islands of the archipelago of Vanuatu and is the largest, highest, and most biodiverse of the insular country. Climatic changes linked to El Ni&amp;#241;o and extreme events such as cyclones and volcanic eruptions are a daily challenge in this remote area. These events can be recorded in sedimentary archives. Here we present a multi-proxy investigation of sediment cores retrieved from two small lakes located on the West coast of Espiritu Santo. Although the records span the last millennium, high-resolution radiocarbon dating of macrofossils reveals a rapid accumulation of sediment in the past 100 years. The high accumulation rate coupled with the high-resolution dating of freshwater sediments allows us to compare the &lt;sup&gt;14&lt;/sup&gt;C bomb curve with the biogeochemical proxies of the sedimentary records. The results can then be validated against written and oral historical records linked with the societal perception of recent environmental changes in this vulnerable ecosystem.&lt;/p&gt;&lt;div&gt; &lt;div title=&quot;Translate selected text&quot;&gt;&lt;/div&gt; &lt;div title=&quot;Play&quot;&gt;&lt;/div&gt; &lt;div title=&quot;Copy text to Clipboard&quot;&gt;&lt;/div&gt; &lt;/div&gt;

scholarly journals Monitoring tidal hydrology in coastal wetlands with the Mini Buoy: applications for mangrove restoration

2020 ◽  
Author(s):  
Thorsten Balke ◽  
Alejandra Vovides ◽  
Christian Schwarz ◽  
Gail L. Chmura ◽  
Cai Ladd ◽  
...  
Keyword(s):  
Salt Marshes ◽  
Low Cost ◽  
Concept Design ◽  
Data Logger ◽  
Mangrove Restoration ◽  
Restoration Planning ◽  
In Situ Data ◽  
Data Loggers ◽  
Intertidal Wetlands ◽  
Tidal Hydrology

Abstract. Acquiring in-situ data of tidal flooding is key for the successful restoration planning of intertidal wetlands such as salt marshes and mangroves. However, monitoring spatially explicit inundation time series and tidal currents can be costly and technically challenging. With the increasing availability of low-cost sensors and data loggers, customized solutions can now be designed to monitor intertidal hydrodynamics with direct applications for restoration and management. In this study, we present the design, calibration, and application of the Mini Buoy, a low-cost bottom-mounted float containing an acceleration data logger for monitoring tidal inundation characteristics and current velocities derived from single-axis equilibrium acceleration (i.e. logger tilt). The acceleration output of the Mini Buoys was calibrated against water-level and current velocity data in the hypertidal Bay of Fundy, Canada, and in a tidally reconnected former aquaculture pond complex in North Sumatra, Indonesia. Key parameters, such as submersion time and current velocities during submergence can be determined over several months using the Mini Buoy. An open-source application was developed to generate ecologically meaningful hydrological information from the Mini Buoy data for mangrove restoration planning. We present this specific SE Asian mangrove restoration application alongside a flexible concept design for the Mini Buoy to be customized for research and management of intertidal wetlands worldwide.

scholarly journals Monitoring tidal hydrology in coastal wetlands with the “Mini Buoy”: applications for mangrove restoration

2021 ◽  
Vol 25 (3) ◽  
pp. 1229-1244
Author(s):  
Thorsten Balke ◽  
Alejandra Vovides ◽  
Christian Schwarz ◽  
Gail L. Chmura ◽  
Cai Ladd ◽  
...  
Keyword(s):  
Salt Marshes ◽  
Low Cost ◽  
Concept Design ◽  
Data Logger ◽  
Mangrove Restoration ◽  
Restoration Planning ◽  
In Situ Data ◽  
Data Loggers ◽  
Intertidal Wetlands ◽  
Tidal Hydrology

Abstract. Acquiring in situ data of tidal flooding is key for the successful restoration planning of intertidal wetlands such as salt marshes and mangroves. However, monitoring spatially explicit inundation time series and tidal currents can be costly and technically challenging. With the increasing availability of low-cost sensors and data loggers, customized solutions can now be designed to monitor intertidal hydrodynamics with direct applications for restoration and management. In this study, we present the design, calibration, and application of the “Mini Buoy”, a low-cost underwater float containing an acceleration data logger for monitoring tidal inundation characteristics and current velocities derived from single-axis equilibrium acceleration (i.e. logger tilt). The acceleration output of the Mini Buoys was calibrated against water-level and current-velocity data in the hypertidal Bay of Fundy, Canada, and in a tidally reconnected former aquaculture pond complex in North Sumatra, Indonesia. Key parameters, such as submersion time and current velocities during submergence, can be determined over several months using the Mini Buoy. An open-source application was developed to generate ecologically meaningful hydrological information from the Mini Buoy data for mangrove restoration planning. We present this specific SE Asian mangrove restoration application alongside a flexible concept design for the Mini Buoy to be customized for research and management of intertidal wetlands worldwide.

scholarly journals Wireless Technology for Monitoring Site-specific Landslide in Vietnam

2018 ◽  
Vol 8 (6) ◽  
pp. 4448
Author(s):  
Gian Quoc-Anh ◽  
Nguyen Dinh-Chinh ◽  
Tran Duc-Nghia ◽  
Tran Duc-Tan ◽  
Kieu Nguyen Thi ◽  
...  
Keyword(s):  
Low Cost ◽  
Wireless Sensor ◽  
Landslide Monitoring ◽  
Technical Solution ◽  
Monitoring Site ◽  
Wireless Technology ◽  
Efficient System ◽  
Weather Events ◽  
Monitoring And Forecasting ◽  
Current Monitoring

<p>Climate change has caused an increasing number of landslides, especially in the mountainous provinces of Vietnam, resulting in the destruction of vital transport and other infrastructure. Current monitoring and forecasting systems of the meteorology department cannot deliver accurate and reliable forecasts for weather events and issue timely warnings. This paper describes the development of a simple, low cost, and efficient system for monitoring and warning landslide in real-time. The authors focus on the use of wireless and related technologies in the implementation of a technical solution and some of the problems of the wireless sensor network (WSN) related to power consumption. Promising compressed sensing (CS) based solution for landslide monitoring is discussed and evaluated in the paper.</p>

Low-cost Open-source 12-channel MPPT Data Logger for Solar Cell Research

2021 ◽  
Author(s):  
Michael D. Kelzenberg ◽  
Samuel P. Loke ◽  
Harry A. Atwater
Keyword(s):  
Solar Cell ◽  
Open Source ◽  
Low Cost ◽  
Data Logger
Sign in / Sign up

Export Citation Format

Share Document