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Sebaran Total Suspended Solid dan Klorofil–A Menggunakan Perbedaan Model Geospasial Di Perairan Depan Sungai Bedahan, Kabupaten Pekalongan Zalfa Apricia Durotunasha; Muhammad Zainuri; Lilik Maslukah; Rizqi Ayu Farihah
Indonesian Journal of Oceanography Vol 8, No 2 (2026): Indonesian Journal of Oceanography
Publisher : University of Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijoce.v8i2.31749

Abstract

Total Suspended Sediment (TSS) merupakan salah satu variabel penting yang menentukan kualitas air karena TSS mengontrol proses biologis di perairan pesisir. TSS ini terdiri dari komponen hidup dan tidak hidup, termasuk didalamnya adalah fitoplankton yang mengandung pigmen klorofil-a. Tujuan penelitian ini adalah memetakan TSS dan klorofil-a menggunakan tiga metode interpolasi dan menentukan model hubungan keduanya.   Sampel air diambil sebanyak 57 stasiun yang diambil di epan muara sungai Bedahan. Sebanyak 70% data in situ digunakan untuk inputan model dan 30% lainnya digunakan untuk validasi. Hasil analisis menunjukkan bahwa metode interpolasi Kriging memiliki akurasi lebih tinggi diikuti Spline dan Inverse Distance Weighted (IDW). Melalui hasil penelitian ini, kami juga mendapatkan model hubungan antara TSS terhadap klorofil-a dengan koefisien determinasi sebesar (R2=0,40). Model regresi ini memperlihatkan bahwa klorofil-a sebagai pigmen utama fitoplankton berkontribusi terhadap tingginya nilai TSS di perairan. Kontribusi ini memperlihatkan bahwa wilayah depan muara Sungai Bedahan masih menunjukkan ekosistem muara yang sehat, akibat keberadaan fitoplankton dan tidak terjadi dominasi dari material anorganik yang dapat mengurangi masuknya cahaya ke kolom perairan.
Evaluating The Accuracy of Gridded Climate Datasets for Precipitation, Surface Air Temperature, and Sea Surface Temperature in Central Java, Indonesia Harmoko, Iis Widya; Zainuri, Muhammad; Wirasatriya, Anindya; Supari, Supari
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 15, No 2 (2025): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v15i2.104276

Abstract

Studies of climate information that rely on accurate and reliable data are essential in hydrometeorological monitoring, early warning, and climate change impacts in areas with varied topography and limited observation data, such as Central Java, Indonesia. This study aims to assess the accuracy of gridded satellite and reanalysis on three main variables. Precipitation was analyzed utilizing CHIRPS, ERA5 Precipitation, and GSMaP products; surface air temperature (SAT) was assessed with ERA5-Land, FLDAS, and AIRS; and sea surface temperature (SST) was evaluated using OSTIA, RAMSSA, and GAMSSA. Observational data from six BMKG stations and iQuam functioned as the reference standard. The datasets were extracted using bilinear interpolation and evaluated using a bias, mean absolute error (MAE), mean absolute percentage error (MAPE), symmetric mean absolute percentage error (SMAPE) for precipitation, and root mean square error (RMSE). The evaluation showed that CHIRPS performed better estimation with the lowest RMSE and SMAPE (17.20 mm/day; 111.42 mm/month; 96.97% daily; 54.09% monthly) compared to ERA5-Precipitation and GSMaP. ERA5-Land in SAT showed better accuracy in MAE and MAPE of 1.2°C and <10% at most locations. For SST evaluation, OSTIA demonstrated the highest agreement with iQuam, showing RMSE of 0.246°C and MAPE of 0.552% in the Southern Sea, while GAMSSA recorded the highest errors across all zones. This study presents a variety of gridded dataset performances based on scale and time to illustrate the importance of validation against observational data. These results can guide researchers in processing the right dataset collection in climate applications in tropical ocean areas.
Struktur Bawah Permukaan Pantai Semarang berdasarkan Metode HVSR Nurwidyanto, Muhammad Irham; Zainuri, Muhammad; Wirasatrya, Anindya; Yuliyanto, Gatot
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 13, No 1 (2023): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v13i1.66864

Abstract

The aim of this study was to obtain a profile for each depth of the subsurface structure of the Semarang coast based on microtremor data. The acquisition of 109 data points in this study was taken using a single-station microtremor tool in the coastal area of Semarang. This study uses the HVSR method to produce the HV curve, amplification factor (A0) and dominant frequency (f0) which can later be used to find the values of vp, vs and vp/vs at each depth. The results obtained in this study include A0 of 0.13 - 5.96, f0 of 0.13 - 7.47 Hz, vs of 154.42 - 1444.404 m/s, vp of 266.40 - 4758.37 m/s and vp/vs of 1,421 – 28,674. Based on the vs analysis, bedrock begins to appear at a depth of 100 m in the eastern and southern parts of West Semarang District and the southern part of North Semarang District. Classification of hard soil, very dense and soft rock from a depth of 100 m shows that it has covered most of the area of Semarang City. However, there are still several areas that still have a medium soil classification, namely most of the areas of Gayamsari District, Genuk District and Pedurungan District, as well as a small part of the area of North Semarang District, West Semarang District and Central Semarang District. Analysis of vp/vs at a depth of 150 m showed a vp/vs classification with a range of 1.4 - 2 in the study area. However, there are still several areas that still have vp/vs values with a value range of 3 – 3.2, namely in the northern part of West Semarang District, eastern Central Semarang District, eastern South Semarang District, northern East Semarang District, northern Gayamsari District, and the central part of Genuk District.
Pendampingan Investasi Saham Syariah pada ASN di Lingkungan Satkordikcam Jepara Arumsari, Nurul Rizka; Ermawati, Nanik; Zainuri, Muhammad
SEMAR (Jurnal Ilmu Pengetahuan, Teknologi, dan Seni bagi Masyarakat) Vol 11, No 1 (2022): Mei
Publisher : LPPM UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/semar.v11i1.52321

Abstract

Nowadays, everyone's needs and wants are huge. Needs and wants become difficult to distinguish because of the changing times that are increasingly advanced. Lifestyle makes people have a lot of demands. To fulfill this, it is not enough to just rely on a monthly salary. Therefore, we must look for ways to be able to utilize the finances we have to meet our needs and desires. One way that can be taken is by investing.Along with the mandate of service, it is deemed necessary to convey knowledge transfer to organizations that play an important role in the community. Among them are the Department of Education, Youth and Sports, Jepara sub-district, Jepara district. It is considered important because there is still limited knowledge and stigma in the community about investing in sharia shares in the capital market. Sharia stock investment material in the capital market will be very helpful for people who will invest in sharia in the capital market and can become an investor.The result of service activities for ASN in the Jepara Satkordikcam environment is that ASN understands capital market theory, the basics of Islamic capital market, is able to practice open accounts through MNC Sekuritas, and is able to understand the management of family financial management
Co-Authors . Juliana A Arwiyah AB, Balik Jaya Abdul Ghofar Abdus Salam Junaedi Afifa, Fitria Hersiana Agnadiva, Alisha Khansa Agrandis, Nanda Agung Suprihadi Agung Suprihadi Agus Hartoko Agus Indarjo Agus Nur Fahmi Agus Sabdono Agus Subagio Ahmad Fadlan Ahnan, Maftuh Aini, Firly Nur Aisyaroh, Masrifatul Akhmad Farid Al-Mansury, Abdul Hamid Alfan Biroli, Alfan Alfi Satriadi Alfiatuzzahra, Diva Amalya, Afroh Ambariyanto , Ambariyanto Ambariyanto Ameylia Ayu Puspitasari Anastasia Rita Tisiana D. K. Anastasia Tisiana Dwi Kuswardani Andita Agung Andreas Nur Hidayat Andriansyah, Dhito Maulana Anggoro, Naufal Sebastian Anindya Wirasatriya Anisa Dewi Nugraheni Anistia Malinda Hidayat Anjani, Revi Putri Dwi Annisa Fadillah Annisa Nur Ayuningtyas Antik Erlina Anto Budiharjo Ardan, Kanaya Chandra Ajeng Sotya Ardiansyah Desmont Puryajati Argiandini, Devita Mega Arif Mustofa Aris Ismanto Arrayanul Jannah, Annisa Arumsari, Nurul Rizka Asih Rismiarti, Asih Asnawati Asnawati Asrudi, Lutfia Ardita Mayra Putri Awaludin, Aji Ayu Wijayanti, Diyah Ayu Zuanita Susanto, Chulud Azhary, Abrar Dalisfasha Azis Rifai Aziz Nur Bambang Azka, Raven Naufal Badzlin, Zahrah Syahmina Baskoro Rochaddi Baskoro Rochaddi Baso Mukramin Bayu A Pranoto Bayu Priyono Budi Raharjo Chandra, AB. Chandra, Adyos Bobby Chatarina Umbul Wahyuni Chrisna A Suryono Darminto . Dede Yusuf, Dede Deki Lukman Wicaksono Deki Lukman Wicaksono Denny Nugroho Sugianto Desriyanti Devi Yuni Sari Sihombing Dewi Masyitoh Syihab Dierrisska, Pudja Handjanny Nastitie Dimas Eko C Dinda Ayu Octaviana Dini Puspodewi Dionisia Dini Nugraheni Djuara P Lubis Doktorasaintifika, Heradita Kaniaazzahra Dwi Haryo Ismunarti Dwi Haryo Ismunarti Dwi Yuliasari Dwian Lumbangaol Edy Supriyo Efendy, Erika Noviyana Eka Riadi Elis Indrayanti Elke Gildantia Elsa Lusia Agus Endang Kusdiyantini Euniche R.P.F. Ramandey Fabian Panji Ayodya Fahmi, Muhammad Hanif Faiz Hamzah Adriono Faizin, Muhammad Sahrul Fajrin, Muhamad Nur Al Fauzy, Yuhansyah Nur Febi Ayu Pramithasari Febrianto, Sigit Fery , Lasiyano A Finna Widya Ariani Fiona Aqhila Dewi Firman Farid Muhsoni Fortunata Riana Francisco Ade Fristanto Fredyansyah, Maulana Alfi Frida Fanani Rohma Frijona Fabiola Lokollo Gabriella Inez Aramita Galih Tristianto Galuh Permatasari Ganis T.K, Ganis Gatot Yulianto Gentur Handoyo Gizka Anindya Putri Goff, Virginia Andrews- Graha, Dorin Satya Greenaty Hidayah Gymnastiar, Muhammad Hadi Endarwati Hadi Endrawati Hadi Endrawati Hadi Endrawati Hafiludin, H Hafiludin, Hafiludin Hamdhana, Raka Anugrah Hanjaya, Rayen Harfatia Chandra Puspita Sari Hariyadi . Haryo Triajie, Haryo Heksa Raihan Herida, Azalia Puspa Hermin P Kusumaningrum Hermin Pancasakti Kusumaningrum Hersugondo Hersugondo Herusugondo Herusugondo Heryoso Setiyono Hidayat, Ryan Akhmal Hidayati, Bintang Nurul Hilyati Fajrina Ibrahim, Rosita Ida Noventalia Iis Widya Harmoko, Iis Widya Ika Putri Hindaryani Imam Misbach Imam Mishbach Iman, Hudiya Izzatul Indah Puji Astuti Indah Wahyuni Abida Indra Budi Prasetyawan Indra Budi Prasetyawan Indras Marhaendrajaya Isnaeni, Aissya Safriliana Ita Riniatsih Ita Widowati Iwan Yahya Izzudin, Maulana Zidan Jarot Marwoto Jihadi, Muhammad Shulhan Johanes Hutabarat Juliansyah, Aryo Junaedi, Abdus Salam Karima, Zalfa Kevifa Satria Widjaya Khoirun Nisa kholiq, Mad Kholizah, Nur Kresnasari, Dewi Kunarso Kunarso Kurniantoro, Vangga Deswanto Prasetyo Kusuma, Aurora Nur Kusumaningrum, Hermin La Tansa, Zaki Lachmuddin Sya’rani Laksani, Mertiara Ratih Terry Lilik Maslukah Lilis Sugiarti Lukman, Annisa Aulia Lusi Lastria M. Sholeh Madkholiq, Madkholiq Maharani, Galung Dhiva Maharani, Prabaswara Nasywa Maharani, Salsabila Dewi Mahardiani Putri Naulia Batubara Mahardiani Putri Naulia Batubara Mahendrajit Yudhantoko, Mahendrajit Mahfud Efendy Maisaroh, Dian Sari Manik, Tetti Novalina Marliantari, Sulistina Maro, Jahved Ferianto Mashuri Mashuri Masrifatul Aisyaroh Maulidya, Shaula Dzikra Max Rudolf Muskananfola Maya Angaraini Fajar Utami Meida Yustiana Merican, Marcelino Ricky Mertiara Ratih Terry Laksani Michael Abbey Mirza Nadia Misbach, Imam Mochamad Iqbal Herwata Putra, Mochamad Iqbal Mochammad Facta Moh Holli Mohammad Arsyad Mudawam, Mohammad Reza Muh Yusuf Muh Yusuf Muh Yusuf Muh. Yusuf Muhammad Helmi Muhammad Iskandar Zulkarnain Muhammad Iskandar Zulkarnain Muhammad Sababa Alhaq Muhammad Wahyu Firmansyah Muhammad Wahyu Romadhon Mumtaz, Fathiyah Muslim Muslim Mustagfirin Mustagfirin Mustagpirin Mustagpirin Mutmainah, Nur Fitri Nabilah Rizki Nadifah Safitri , Talitha Aulia Nanik Ermawati, Nanik Nawawi, M Anwar Nelly Florida Riama Nexvia, Cinta Marshanda Ningrum, Devita Ningrum, Riska Widyah Nisa', Khoirun Nisrina Nisrina Noor, Rifky Fadlian Novi Indriyawati Novianti, Teni Novita Ayu Ryandhini Nugroho Agus D Nurafni Tumanggor Nurhayati Nurhayati Nurhayati Nurhayati Nurindahsari Niken Larasati Nurul Latifah Nurwahid, Ahmad Nurwidyanto, Muhammad Irham Ohee, Henderite Loisa Okti Hajeng Kristiadi Pahlevi, Firdha Maudiyah Pahlevi, Firdha Maulidyah Pancasakti, Hermin Panji Ayodya Parichat Wetchayont Parry, Markus Julio Pasha, Muhammad Affan Person Pesona Renta Petrus Subardjo Poma, Yoniva Nandarista Pradipta, Zulfa Abkar Pradiva, Zahra Aninda Pratiwi, Putri Ajeng Primaswatantri Permata Pudja Handjanny Nastitie Dierrisska Puguh Sujarta Purwanto Purwanto Purwanto Purwanto Purwanto Purwanto Puspitasari, Radita Putri Puspitasari, Vita Ayu Putri Asrudi, Lutfia Ardita Mayra Putri Wahyuningtyas, Putri Rahmad Triadi Rahmadiana Andini Rahman Rahman Ramadhani, Mohammad Rifli Razana, Aqila Khaira Rejeki Siti Ferniah Reksajaya, Puspaningtyas Mutiaraputri Renni Yuniati Restu Nur Afi Ati Resy Sekar Sari Retno Hartati Rezfiko Agdialta Ria Azizah Rica Dewanty Ricky Daniel Aror Ridarto, Arij Kemala Yasmin Rifky Aryasatya Risian, Muhammad Haiqal Aulia Rizka Rahmana Putri Rizka, Rizka Yuliana Rizqi Ayu Farihah Robertus Triaji Mahendrajaya Rose Dewi Rose Dewi Rose Dewi Rosikhul Islah I Rosita, Rosita Ibrahim Rosmeiuli Panjaitan Rudhi Pribadi Rudhi Pribadi S R Wahyudi Safikri, Ilham Safitri, Talitha Aulia Nadifah Sakti Pancar Emak Santoso, Tanto Budi Sasmita, Salma Ayu Shaliha, Shaliha Shanas Septy Prayuda Sidhi Saputra Simatupang, Ariel Oscar Paskario Simon Sadok Siregar, Simon Sadok Siti Jubaedah Siti Nur Jannah Solly Aryza Sri Amini Sri Redjeki Sri Redjeki Sri Rejeki Sri Yulina Wulandari Subagiyo Subagiyo Subono, Maulana Sudjadi Sugeng Widada Sulaiman, Zainal Muttaqien Sulis Setyowati, Sulis Sulistyowati Sulistyowati Sulistyowati Sulistyowati Supari Supari, Supari Suradi Widjaya Saputra Suryani, Oda Gracia Ariela Suryanti - Suryono Suryono Suryono Suryono Sutrisno Anggoro Sutrisno Anggoro Syaifudin Syarani, Lachmudin Syarifah, Wasiqatus Syawallita, Ridha Olnis Teni Novianti Timur, Galang Sandi Titik Susilowati Tjahjo Winanto Tony Hadibarata, Tony Topo Yono Tri Widya Laksana Putra Ummu Salma Vaviansyah, In’am Wahyu Budi Setyawan Wahyu Dewi Utari Haryanti Wahyuni, Ananda Wahyuningsih, Candra Wardani, Adella Eka Warsito Atmodjo Wati, Tarisa Sholikha Wiarta, Rinto Widianingsih Widianingsih Widianingsih Widianingsih Widiaratih, Rikha Widodo S Pranowo Widodo Setiyo Pranowo Wijanarka Wijanarka Winona Abigail Wirasatrya, Anindya Witria Witria Yann Hardivillier Yopie Anggara Putra Yopie Anggara Putra, Yopie Anggara Yosafat Donni Haryanto Yoshua Mario Sumbodo Yulia Ulfah Yunan Sepda Kurnyanda Yuniar Andri Sulistiyanto Yusuf Jati Wijaya Yuvita Muliastuti Zalfa Apricia Durotunasha Zulfiandi Zulfiandi