1,721,220 research outputs found
VULCANOSTRATIGRAPHY AND PETROGENESIS OF SUNDORO VOLCANO AND ITS SURROUNDING, WONOSOBO REGENCY, TEMANGGUNG REGENCY, CENTRAL JAWA
No full textPrevious studies in Sundoro Volcano have examined geological settings and rock geochemistry, but, vulcanostratigraphy mapping which is accompanied with complete petrogenesis analyses was not completed by previous researchers. The aim of this study is to identify geological settings, magmatic series, and tectonic settings in Sundoro Volcano and its surroundings.
Remote sensing analysis was conducted to identifies geomorphological and tentative geological units, then, was proofed by field observations. The result of field observations, then, were presented on a detail geological map that was created by using the principal of vulcanostratigraphy.
Based on the observations, research area can be divided into eight geomorphological units, while the stratigraphy of the study area is divided into three Khuluk namely, Sundoro, Sumbing, and Dieng, which are consisted of 28 lithological units. In the study area, Khuluk Sundoro is composed by four Gumuk, namely Pagerluhur, Kembang, Kekep, and Watu. Pagerejo Sinistral strike slip was identified as secondary structure which was developed in study area. The results of field observation and petrographic analyses have shown that lithology of the study area is arranged by andesite, pyroxene andesite, pyroclastic breccia, tuff-breccia, tuff-lapili, and tuff. Combining petrographic analyses with the comparison of SiO2 content against major elements, and trace elements have indicated that magmatic processes in the study area are controlled by crystal fractionation, magma mixing, assimilation, adiabatic decompression, and convection. Based on phenocrysts abundance and geochemistry analyses were known that magmatic series in Sundoro Volcano is Kalk-Alkali, resulted from subducted plate margin then form volcanic features as Island-Arc.
Keywords: Sundoro Volcano, vulcanostratigraphy, petrogenesis, tectonic, island-arc
VULCANOSTRATIGRAPHY AND PETROGENESIS OF SUNDORO VOLCANO AND ITS SURROUNDING, WONOSOBO REGENCY, TEMANGGUNG REGENCY, CENTRAL JAWA
No full textPrevious studies in Sundoro Volcano have examined geological settings and rock geochemistry, but, vulcanostratigraphy mapping which is accompanied with complete petrogenesis analyses was not completed by previous researchers. The aim of this study is to identify geological settings, magmatic series, and tectonic settings in Sundoro Volcano and its surroundings.
Remote sensing analysis was conducted to identifies geomorphological and tentative geological units, then, was proofed by field observations. The result of field observations, then, were presented on a detail geological map that was created by using the principal of vulcanostratigraphy.
Based on the observations, research area can be divided into eight geomorphological units, while the stratigraphy of the study area is divided into three Khuluk namely, Sundoro, Sumbing, and Dieng, which are consisted of 28 lithological units. In the study area, Khuluk Sundoro is composed by four Gumuk, namely Pagerluhur, Kembang, Kekep, and Watu. Pagerejo Sinistral strike slip was identified as secondary structure which was developed in study area. The results of field observation and petrographic analyses have shown that lithology of the study area is arranged by andesite, pyroxene andesite, pyroclastic breccia, tuff-breccia, tuff-lapili, and tuff. Combining petrographic analyses with the comparison of SiO2 content against major elements, and trace elements have indicated that magmatic processes in the study area are controlled by crystal fractionation, magma mixing, assimilation, adiabatic decompression, and convection. Based on phenocrysts abundance and geochemistry analyses were known that magmatic series in Sundoro Volcano is Kalk-Alkali, resulted from subducted plate margin then form volcanic features as Island-Arc.
Keywords: Sundoro Volcano, vulcanostratigraphy, petrogenesis, tectonic, island-arc
VULCANOSTRATIGRAPHY AND PETROGENESIS OF SUNDORO VOLCANO AND ITS SURROUNDING, WONOSOBO REGENCY, TEMANGGUNG REGENCY, CENTRAL JAWA
No full textPrevious studies in Sundoro Volcano have examined geological settings and rock geochemistry, but, vulcanostratigraphy mapping which is accompanied with complete petrogenesis analyses was not completed by previous researchers. The aim of this study is to identify geological settings, magmatic series, and tectonic settings in Sundoro Volcano and its surroundings.
Remote sensing analysis was conducted to identifies geomorphological and tentative geological units, then, was proofed by field observations. The result of field observations, then, were presented on a detail geological map that was created by using the principal of vulcanostratigraphy.
Based on the observations, research area can be divided into eight geomorphological units, while the stratigraphy of the study area is divided into three Khuluk namely, Sundoro, Sumbing, and Dieng, which are consisted of 28 lithological units. In the study area, Khuluk Sundoro is composed by four Gumuk, namely Pagerluhur, Kembang, Kekep, and Watu. Pagerejo Sinistral strike slip was identified as secondary structure which was developed in study area. The results of field observation and petrographic analyses have shown that lithology of the study area is arranged by andesite, pyroxene andesite, pyroclastic breccia, tuff-breccia, tuff-lapili, and tuff. Combining petrographic analyses with the comparison of SiO2 content against major elements, and trace elements have indicated that magmatic processes in the study area are controlled by crystal fractionation, magma mixing, assimilation, adiabatic decompression, and convection. Based on phenocrysts abundance and geochemistry analyses were known that magmatic series in Sundoro Volcano is Kalk-Alkali, resulted from subducted plate margin then form volcanic features as Island-Arc.
Keywords: Sundoro Volcano, vulcanostratigraphy, petrogenesis, tectonic, island-arc
Lagu kebangsaan indonesia raya
Full text linkBuku yang disajikan ini dimaksudkan sebagai sumbangan dalam rangka pembinaan persatuan dan kesatuan bangsa dengan mendorong kesadaran bersejarah bangsa Indonesia sebagai suatu bangsa yang bukan menerima kemerdekaan secara cuma-cuma, namun liwat perjuangan berdarah agar dapat menikmati masyarakat adil dan makmur sesuai dengan Pancasila dan Undang-Undang Dasar 1945
ANALISIS RISIKO BENCANA ERUPSI GUNUNGAPI SUNDORO DI KECAMATAN NGADIREJO KABUPATEN TEMANGGUNG
No full textPenelitian ini bertujuan untuk mengetahui: (1) pengaruh faktor-faktor bahaya, kerentanan, dan kapasitas terhadap terjadinya bencana (2) tingkat dan sebaran risiko bencana erupsi Gunungapi Sundoro.
Penelitian ini merupakan penelitian survey deskriptif dengan pendekatan kuantitatif. Populasi dalam penelitian ini ialah seluruh wilayah Kecamatan Ngadirejo. Sampel diambil menggunakan metode purposive sampling berdasarkan pada Peta KRB Gunungapi Sundoro. Metode pengumpulan data yang digunakan ialah (1) wawancara dan (2) observasi untuk memperoleh data kapasitas bencana, (3) dokumentasi dan interpretasi untuk memperoleh data kerentanan bencana dan ancaman bahaya erupsi Gunungapi Sundoro. Analisis data yang digunakan ialah analisis overlay, scoring, dan deskriptif.
Berdasarkan hasil analisis data diperoleh kesimpulan: (1) Masing-masing faktor bahaya, kerentanan, dan kapasitas memiliki pengaruh yang bervariasi terhadap terjadinya bencana. Faktor bahaya dan kerentanan adalah faktor yang dapat meningkatkan tingkat risiko bencana, sedangkan faktor kapasitas adalah faktor yang dapat memperkecil tingkat risiko bencana (2) Tingkat dan sebaran risiko bencana erupsi dibagi menjadi tiga tingkatan yaitu tingkat risiko sedang, rendah, dan sangat rendah. Tingkat risiko sedang dengan luas 146,96 ha mendominasi sebagian wilayah Desa Katekan dan Giripurno. Tingkat risiko rendah dengan luas 1080,52 ha mendominasi sebagian besar wilayah Katekan, Tegalrejo dan Giripurno. Tingkat risiko sangat rendah dengan luas 870,50 ha mendominasi sebagian Desa Purbosari, Tegalrejo, dan Banjarsari. Tingkat risiko sangat rendah juga berada ada di wilayah Desa Medari, Campursari, Gondangwinangun, Karanggedong, Kataan, Ngadirejo, Gandu Wetan, Munggangsari, Gejagan, Medari, Pringapus, Mangunsari, dan Kelurahan Manggong.
Kata kunci: Erupsi Gunungapi Sundoro, Risiko Bencana, Kecamatan Ngadirej
PENDUGAAN SUHU PENGENDAPAN ENDAPAN PIROKLASTIK GUNUNG SUNDORO PADA SITUS LIYANGAN MENGGUNAKAN ANALISIS ARANG
No full textSitus Liyangan merupakan situs arkeologi yang terletak di sebelah Timur Laut Gunung Sundoro. SItus
Liyangan merupakan pemukiman masyarakat Mataram Kuno pada abad 6 – 10. Konstruksi rumahrumah penduduk tersebut berupa kayu dan bambu. Kayu, bambu, dan fragmen tumbuhan yang ada
pada kala itu terpendam oleh endapan piroklastik hasil erupsi Gunung Sundoro. Di situs ini terdapat
singkapan endapan piroklastik setebal 6,5 m dengan panjang 250 m. Singkapan tersebut tersusun oleh
litik andesit, litik basalt, dan arang sebagai fragmen, serta material berukuran abu sebagai
matriksnya. Fragmen arang tersebut merupakan hasil pengarangan kayu dan bambu oleh endapan
piroklastik yang berasal dari Gunung Sundoro. Pendugaan suhu pengendapan endapan piroklastik
dapat dieproleh dengan menganalisis suhu pengarangan arang. Analisis yang digunakan adalah
analisis reflektansi arang dan analisis rasio unsur H/C. Suhu pengendapan endapan piroklastik
berdasarkan analisis reflektansi arang adalah 291° - 415°C, sedangkan berdasarkan hasil analisis
rasio H/C adalah 299° - 381°C
Source Determination of Debris Avalanche Deposit based on the Morphology and Distribution of Hummocky Hills on the Northeastern Flank of G. Sundoro and G. Sumbing, Central Java, Indonesia
Full text linkThe presence of hummocky hills as a typical product of debris avalanche deposits is prominently visible in the northeastern flank of G. Sundoro and G. Sumbing, Temanggung, Central Java. In an attempt to better understand the past behavior of both G. Sundoro and G. Sumbing, we identify the source of the debris avalanche deposit. Interpretation is performed on the basis of the assumption of two possible sector collapse sources, i.e., G. Sundoro and G. Sumbing. The Sumbing source scenario is assumed as freely spreading type considering 1) distribution of the hummocky hills are relatively on the northeastern flank of the volcano, and 2) the present crater structure on the summit of the volcano which is opening to the northeast. The Sundoro source scenario is assumed as valley-filling type considering the distribution of the hummocky hills are relatively on the eastern flank of Sundoro extended to the far distal area and bounded by older high topography of G. Sumbing and North Serayu Mountains. The source identification was done on the basis of field observation of the deposit lithological characteristics combined with image analysis, including hummocky hills morphometry, displacement angle, and spatial distribution. Image analysis identifies approximately 645 hummocky hills ranging from 1,851 mz to 623,828 mz and average of 23,482 m2. Petrographic analysis of 5 representative block lava samples shows variation of olivine basalt, pyroxene andesite, to hornblende andesite. The results show that big size hummocky hills dominate the western side, while small size on the east. Displacement angle varied following the valley orientation with typical downslope topography. These suggested that the hummocky hills were originated from G. Sundoro as a valley-filling debris avalanche deposit
PERANCANGAN SISTEM INFORMASI AKUNTANSI BERBASIS WEBSITE PADA PT LUHUR SUNDORO
Full text linkSistem Informasi Akuntansi berbasis Web PT Luhur Sundoro bertujuan untuk mengatasi
tantangan yang dihadapi perusahaan dalam pengelolaan pencatatan keuangan dan riwayat
transaksi yang saat ini masih dilakukan secara manual. Riset ini menyoroti pentingnya teknologi
dalam meningkatkan operasional bisnis, terutama dalam konteks revolusi industri 4.0, di mana
otomatisasi dan integrasi teknologi informasi sangatlah penting. Penelitian berfokus pada
pengembangan sistem informasi akuntansi (SIA) berbasis web yang menyederhanakan
pencatatan transaksi keuangan dan mengurangi kesalahan manusia. Website ini juga bertujuan
untuk memudahkan karyawan dalam mencatat laporan keuangan dan memberikan wawasan
berharga untuk pengambilan keputusan.
Metodologinya meliputi analisis kebutuhan perusahaan, perancangan sistem menggunakan Rapid
Application Development (RAD), dan implementasinya menggunakan framework PHP dan
Laravel. Hasil implementasi menunjukkan bahwa sistem berjalan dengan baik, stabil, dan sesuai
dengan kebutuhan perusahaan. Sistem mampu meningkatkan efisiensi, akurasi pencatatan, dan
penyajian laporan keuangan secara real-time. Evaluasi menunjukkan bahwa penggunaan sistem
ini secara signifikan membantu mengurangi kesalahan manusia, mempercepat proses
administrasi, serta mendukung pengambilan keputusan manajerial. Dengan demikian, sistem ini
berhasil memenuhi tujuan awal pengembangan dan memberikan dampak positif terhadap
efisiensi operasional PT Luhur Sundoro
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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