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Journal : Physics Communication

ANALISIS KONDISI SUHU DAN SALINITAS PERAIRAN BARAT SUMATERA MENGGUNAKAN DATA ARGO FLOAT Juniarti, Lita; Jumarang, Muh. Ishak; Apriansyah, Apriansyah
Physics Communication Vol 1, No 1 (2017): February 2017
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (859.664 KB) | DOI: 10.15294/physcomm.v1i1.9005

Abstract

A study about temperature and salinity condition in western Sumatra Sea by using Argo Float data (92o BT s.d 101 oBT dan 2o LU s.d 2o LS) has been done. This study aims to analyze the conditions of temperature and salinity, and determine the relationship of temperature and salinity in the incidence of DM (Dipole Mode). The data used is the data of temperature and salinity in the year 2004 to up 2014 the data processing Argo Float using software Ocean Data View (ODV) data in the form of Conductivity Temperature Depth (CTD), resulting in the spatial distribution of temperature and salinity, the temporal distribution of temperature and salinity, profile temperature and salinity with depth, as well as the TS diagram is then performed using the correlation equation between temperature and salinity with DMI. The results of data analysis showed that the spatial distribution of the temperature of the surface layer that is 27.5 0C to 30 0C, while the salinity is 33.5 psu to 35 psu. Spatial temperature distribution in the inner layer is 2.5 0C to 12.5 C, while the salinity is 33.5 psu to 35 psu. The temperature profile of the depth is 2.5 0C to 31 C, while the salinity is 33.25 psu to 35.5 psu. The correlation between the temperatures and the DMI shows an inverse relationship which the correlation coefecient is -0.72.
RANCANG BANGUN ALAT GEOLISTRIK BERBASIS ARDUINO MEGA2560 Widodo, Widodo; Lapanporo, Boni Pahlanop; Jumarang, Muhammad Ishak
Physics Communication Vol 2, No 1 (2018): February 2018
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (603.72 KB) | DOI: 10.15294/physcomm.v2i1.12748

Abstract

Rancang bangun alat geolistrik berbasis Arduino Mega2560 telah selesai dilaksanakan. Alat yang dirancang dapat bekerja dengan baik. Penelitian ini berhasil membuat alat geolistrik dengan penguat tegangan s.d 350 Volt dan dilengkapi dengan fitur injeksi arus secara otomatis, sistem penyimpanan data hasil pengukuran, dan stacking chart database. Alat geolistrik yang dirancang memiliki 3 sistem utama, yaitu sistem penguat tegangan, sistem penyimpanan data dan sistem kontrol. sistem penguat tegangan yang dirancang menggunakan IC CD4047, sistem penyimpanan data menggunakan modul SD Card, dan sistem kontrol menggunakan Arduino Mega2560. Alat geolistrik yang dirancang diuji dan dikalibrasi menggunakan alat ukur standar yaitu ARES (Automatic Resistivity System). Hasil pengujian alat geolistrik yang dirancang memiliki nilai error sebesar 13,95% dibandingkan dengan alat ukur standar yaitu ARES.