Category Archives: Research and Teaching

PERANAN GEODESI SATELIT DALAM MEMAHAMI DINAMIKA BUMI DI WILAYAH INDONESIA

Pidato Ilmiah Prof. Hasanuddin Zainal Abidin – 9 Februari 2008

PERANAN GEODESI SATELIT DALAM MEMAHAMI DINAMIKA BUMI DI WILAYAH INDONESIA

 

Profesor Hasanuddin Z. Abidin

 

Sinopsis

          Menurut IAG (International Association of Geodesy) Geodesi adalah disiplin ilmu yang mempelajari tentang pengukuran dan perepresentasian dari Bumi dan benda-benda langit lainnya, termasuk medan gaya beratnya masing-masing, dalam ruang tiga dimensi yang berubah dengan waktu. Sedangkan Geodesi Satelit adalah sub-bidang ilmu Geodesi yang menggunakan bantuan satelit (alam ataupun buatan manusia) untuk menyelesaikan tugas dan permasalahan geodesi, yang secara mendasar terkait dengan penentuan posisi, penentuan medan gaya berat, serta penentuan variasi temporal dari posisi dan medan gaya berat.

          Pada saat ini aplikasi sistem-sistem Geodesi Satelit, seperti SLR (Satellite Laser Ranging), LLR (Lunar Laser Ranging), VLBI (Very Long Baseline Interferometry), Satelit Altimetri, Satelit Navigasi (e.g. GPS dan Glonass) sangat luas dan beragam, mulai dari bidang geodesi, survei dan pemetaan, navigasi, kelautan, kebumian maupun kedirgantaraan.

          Dalam orasi ini, penulis secara umum akan terlebih dahulu menjelaskan peranan yang dapat diberikan metode-metode geodesi satelit dalam memahami dinamika Bumi di wilayah Indonesia, yang secara geografis, geologis maupun geofisis mempunya dinamika yang relatif cukup tinggi. Selanjutnya pembahasan akan dikonsentrasikan pada pemanfaatan dari metode Satelit Navigasi, dalam hal ini GPS (Global Positioning System), yang telah dilakukan untuk lebih memahami dinamika Bumi di wilayah Indonesia.

          Hasil-hasil penelitian yang terkait dengan studi deformasi gunung api, penurunan tanah (land subsidence), pergerakan tanah (landslides), serta aktivitas tektonik pada beberapa lokasi di wilayah Indonesia akan diberikan dan dijelaskan.

          Orasi ini akan ditutp dengan beberapa saran dan rekomendasi untuk mengoptimalkan peranan geodesi satelit dalam proses pembangunan di Indonesia secara umum dan meningkatkan pemahaman dinamika Bumi wilayah Indonesia secara khusus.

 

Pasted from <http://www.mgb.itb.ac.id/index.php?option=com_content&task=view&id=40&Itemid=47>

 

Guest Lecture Prof. Katsuaki Koike

Lecture invitation from Dean of FTTM

 

Day/Date: Monday, 11 Februari 2008

Time       : 10.30 – 12.00

Place      : Seminar Room, 2nd fl, Mining Engineering Program, FTTM-ITB

Presenter: Prof. Katsuaki Koike from Kumamoto University

 

Title:

Spatio-Temporal Modeling of Water Quality, Level, and Flow: Geostatistical, Remote Sensing, and Geophysical Approaches to Water Environmental Problems

Seminar “A Measure of Data Concentration” (Prof.Maman A. Djauhari)

Quoted from  http://www.fitb.itb.ac.id/kk-geologi_terapan

Monday Feb 4th 2008 (09.00-11.00) at Study Hall of Matematics, a seminar on multivariate analysis has been help. The speaker was Prof. Maman A. Djauhari, one of well established ITB statiscian. He presented his paper, A Measure of Data Concentration, which had been published in The Journal of Applied Probability and Statistics Vol. 2 No. 2, 2007. Below is the abstract of the paper.

A Measure of Multivariate Data Concentration
Maman A. Djauhari
Journal of Applied Probability and Statistics Vo. 2, No. 2 pp 139-155.

Volume ellipsoid and covariance determinant have been successfully used as multivariate data concentration measures. However, their computations are quite cumbersome especially when the data sets are of high dimension. In this paper we present an analytical approach of vector variance as an alternative measure which can eliminate this obstacle and, in order to be able to use it in practical applications, we derive its asymptotic distributional properties. Its sensitivity to the change of covariance structure will be discussed.

I attended the seminar, as I have very much the same interest regarding multivariate analysis of hydrochemistry data on volcanic areas.

Article on cluster analysis

Hydrogeochemistry of Volcanic Hydrogeology based on Cluster Analysis of Mount Ciremai, West Java, IndonesiaD. Erwin Irawan1, Deny Juanda Puradimaja1, Sudarto Notosiswoyo2

1Research Group on Applied Geology, Faculty of Earth Sciences and Technology, Institut Teknologi Bandung, Jl. Ganesha No. 10, 40132 Bandung, Indonesia (e-mail: erwin@gc.itb.id)

2Research Group on Earth Resources Exploration, Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Jl. Ganesha No. 10, 40132 Bandung, Indonesia (e-mail: sudarto@mining.itb.ac.id)

Complete abstract on www.fitb.itb.ac.id/kk-geologi_terapan

Force Majeur Definitions

GLOSSARY OF INSURANCE TERMS (www.insure.com/glossary.cfm)

Force majeur shall be understood to mean, among other things: wars (inside or outside the Netherlands), mobilization, riots, floods, obstructions of transport, restriction, discontinuation or stagnation of supplies from public utility companies, lack of fuel, lack of raw materials, fire, break-down of machinery and other accidents, strikes or other unforeseen circumstances including those in the country supplying the raw materials or semi-manufactured products, with circumstances impede or delay seller’s normal operations or make it impossible to expedite the order in time.

WIKIPEDIA ONLINE ENCYCLOPEDIA (www.wikipedia.org)

Force majeure (French for “greater force”) is a common clause in contracts which essentially frees one or both parties from liability or obligation when an extraordinary event or circumstance beyond the control of the parties, such as war, strike, riot, crime, act of God (e.g., flooding, earthquake, volcano), prevents one or both parties from fulfilling their obligations under the contract. However, Force Majeure is not intended to excuse negligence or other malfeasance of a party, as where non-performance is caused by the usual and natural consequences of external forces (e.g., predicted rain stops an outdoor event), or where the intervening circumstances are specifically contemplated.

http://www.alway-associates.co.uk/legal-update/article.asp?id=48

Force Majeur is a French term which was introduced into English Case Law in Lebeaupin v Crispin as

“ All circumstances independent of the will of man AND which is not in his power to control”

Vis Majeur is more commonly known as An Act of God. Such a term is rarely seen in construction contracts but is noted here to identify that the phrase is narrower than Force Majeur because, arguably, some acts of God are with in the power of man to control.

 I ChemE form of Contract defines Force Majeur as

 “……. any circumstances beyond the reasonable control of a party which prevent or impede the due performance of a Contract including but not limited to war or hostilities; riot or civil commotion; epidemic; earthquake flood or other natural disaster;………

 Similarly MF/1 standard Form of Contract defines Force Majeur as war, hostilities…….ionising waves…..radio activity……..pressure waves…….revolution…….riot…….any other circumstances beyond the reasonable control of the contractor.

 Asuransi Bumida

 Yang dimaksud dengan pengertian kecelakaan adalah suatu peristiwa yang terjadi secara tiba-tiba, tidak terduga sebelumnya, datang dari luar diri si tertanggung, bersifat kekerasan, tidak dikehendaki dan tidak ada unsur kesengajaan dalam peristiwa tersebut.

 Princeton Dictionary

  • not expected or anticipated; “unexpected guests”; “unexpected news”
  • forced: made necessary by an unexpected situation or emergency; “a forced landing”
  • not planned; “an unexpected pregnancy”
  • happening or coming quickly and without warning; “a sudden unexpected development”

 

 

Meriam Webster Dictionary

unexpected

: not expected : UNFORESEEN

 http://www.thefreedictionary.com/unpredicted

 Adj.      1.         unpredicted – without warning or announcement; “they arrived unannounced”; “a totally unheralded telegram that his daughter…died last night”- M.A.D.Howe

 
unannounced, unheralded

unexpected – not expected or anticipated; “unexpected guests”; “unexpected news”

 

http://thesaurus.reference.com/browse/unanticipated

 Definition:  sudden Synonyms:  hasty, hurried, jerky, precipitate, precipitous, quick, rushing, sudden, surprising, unanticipated, unceremonious, unexpected, unforeseen Antonyms:  anticipated, deliberate, expected, gradual, leisurely

Earmarking concept

These are some definition of earmarking.

http://www.thefreedictionary.com/Earmarking

 ear·mark

n.

1. An identifying feature or characteristic: a novel with all the earmarks of success.

2. An identifying mark on the ear of a domestic animal.

tr.v. ear·marked, ear·mark·ing, ear·marks

1. To reserve or set aside for a particular purpose. See Synonyms at allocate.

2. To mark in an identifying or distinctive way.

3. To mark the ear of (a domestic animal) for identification.

 

En.wikipedia.org

Earmarks in public finance

In public finance, an earmark is a requirement that all or a portion of a certain source of revenue (such as a tax) must be devoted towards spending on a specific public expenditure. Earmarking bypasses the normal procedure where tax revenue is pooled in a general fund which is then distributed among separate spending programs.

For example, in the United Kingdom a tax on television licences is directly allocated to the British Broadcasting Corporation (BBC).

Governments are often fond of earmarking, while public finance experts often criticize earmarking since it provides an avenue for corruption including kickbacks and because it reduces the discretion and flexibility of the government, which may lead to a loss in economic efficiency.

“often reflecting procedures established over time that may differ from one appropriation bill to another. For some bills, an earmark may refer to funds set aside within an account for a specified program, project, activity, institution, or location. In others, the application may reflect a more narrow set of directives to fund individual projects, locations, or institutions.”

 “uses a different definition of earmarks, namely specified funds for projects, activities, or institutions not requested by the executive, or add-ons to requested funds which Congress directs for specific activities.”

 Not specifically authorized; Not competitively awarded; Not requested by the President; Greatly exceeds the President’s budget request or the previous year’s funding; Not the subject of congressional hearings; or Serves only a local or special interest.” [2]

During my off time. Karang Sambung (Kebumen) Field Camp 2007

Kuliah lapangan Karang Sambung diadakan sejak tanggal 26 Juni sampai 25 Juli 2007. Dosen anggota KK Geologi Terapan bertugas mengisi sesi geomorfologi. Dr. Budi Brahmantyo dan D. Erwin Irawan, MT ditugaskan untuk mengisi materi tersebut, yang terdiri dari:

1. Analisis dan interpretasi peta geomorfologi
2. Observasi bentuk-bentuk geomorfologi
3. Observasi tanah pelapukan
4. Observasi dan pembuatan penampang sungai

Berikut ini adalah beberapa foto-foto kegiatan tersebut.
Lintas sungai
Observasi geomorfologi
Observasi kelurusan sungai

[Volcanic hydrogeology] Spatial Analysis of Volcanic Hydrogeology at Mt. Ciremai, West Java, Indonesia

Regional Conference, Kota Kinabalu Malaysia

Abstract Submission Form

Corresponding Author: Dr. T.A. Bogaard

Address:

Department Physical Geography

Faculty of Geosciences

Utrecht University

P.O.Box 80115

3508TC Utrecht

The Netherlands

Email: t.bogaard@geo.uu.nl
Fax: +31-30 2531145

Title of paper:

Spatial Analysis of Volcanic Hydrogeology at Mt. Ciremai, West Java, Indonesia

Author(s) and Affiliations

Thom Bogaard

Department of Physical Geography,Faculty of Geosciences, Utrecht University, P.O. Box 80115, 3508 TC Utrecht, The Netherlands (e-mail: t.bogaard@geo.uu.nl)

D. Erwin Irawan

Research Group on Applied Geology, Faculty of Earth Sciences and Mineral Technology, Institut Teknologi Bandung,

Jl. Ganesha No. 10, 40132 Bandung, Indonesia (e-mail: erwin@gc.itb.id)

Deny Juanda Puradimaja

Research Group on Applied Geology, Faculty of Earth Sciences and Mineral Technology, Institut Teknologi Bandung,

Jl. Ganesha No. 10, 40132 Bandung, Indonesia (e-mail: erwin@gc.itb.ac.id)

Abstract (no more than 200 words)

Volcanic slopes are important sources of water. Due to altitude effects they receive significant amounts of precipitation whereas the lower regions often receive far less (<500 mm/year). In densely populated tropical regions, like Java, Indonesia, this water source is of increasing importance both for irrigation and domestic uses. The use of water from volcanic slopes is, however, not without risk as volcanoes are very important sources of toxic contaminants. The relatively small discharge volume and large spatial variability of the volcanic deposits make it difficult to assess the characteristics of the local groundwater systems and to calculate the water balance.

This paper describes a methodology to analyse both water quality and quantity using spring discharge information and relate it to volcanic geomorphology.

As case study, more then 100 springs are monitored and analysed on Mt. Ciremai, central Java, Indonesia. The results show radial flow patterns, a dependency on slope aspect and altitude and lithology. The aquifer system was found to be a combination of porous (several meters) and fractured rock that is built up of lava and volcanic breccias.

This paper will elaborate on the relationship between volcanic geomorphology and hydrology that was found and discuss how this information could be used for assessing the spatial patterns of local groundwater systems on volcanic slopes.

List up to 4 key words:

1 Water quality

2 volcanoes

3 Groundwater systems

4 spatial patterns

Session Preference:

Preference 1: Environmental Geomorphology

Preference 2: Rapid Changes and Human Respones