AI SearchAnalysis of vertical total electron content (VTEC) from different IGS products and VTEC anomalies for the detection of earthquake precursor (Record no. 5229)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 04196nas a2200433 a 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260817162511.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 260115s20229999th u ms t 000 eng d |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b12470624 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Diss. no.RS-22-01 |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Prapas Thammaboribal |
| 245 10 - TITLE STATEMENT | |
| Title | Analysis of vertical total electron content (VTEC) from different IGS products and VTEC anomalies for the detection of earthquake precursor |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Pathum Thani, Thailand : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 2022 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 165 leaves : |
| Other physical details | ill. (some col.)+ |
| Accompanying material | 1 online resource |
| 490 1# - SERIES STATEMENT | |
| Series statement | Dissertation ; |
| Volume/sequential designation | no. RS-22-01 |
| 500 ## - GENERAL NOTE | |
| General note | A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Engineering in Remote Sensing and Geographic Information Systems |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (Ph.D.) - Asian Institute of Technology, 2022 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | The main objective of this study is the development of seismo-ionospheric anomaly detection technique by applying the average of diurnal vertical total electron content (AVTEC) as well as the standard deviation of diurnal vertical total electron content (SVTEC) instead of the conventional techniques as applying background window for detecting the VTEC anomaly. In this study, 38 earthquakes vary from light earthquakes (M4<M<M5) to great earthquakes (M>8) were selected as case studies. The epicenters of the earthquakes were located in low latitude and middle latitude regions.To investigate the influence of geography on the VTEC anomaly appearance, the earthquakes were also characterized into inland and submarine earthquakes. The results reveal that the ionospheric anomaly cannot be detected at all when the earthquake moment magnitude is lower than 5 (light earthquakes), but the moderate earthquakes and strong earthquakes, the anomalies were significantly detected in low latitude region. In case of a magnitude greater than 7, the anomalies were detected one up to six days prior to the earthquake occurrence. The anomalies detected from inland earthquake cases give the same characteristic of AVTEC and SVTEC distribution which the values of AVTEC and SVTEC decrease proportional to the distance rom the anomalous zone, the anomalous zone usually occurs within the earthquake preparation zone.The ionospheric anomalies of major and great earthquake cases also reveal that the anomaly can be detected both in low latitude and middle latitude but the appearance of the anomaly is more significant in the low latitude region because the ionosphere in the mid latitude in this study is influenced by the crest of onospheric variation n the eguatorial ionization anomaly (EIA). Finally, the anomalous days detected from AVTEC and SVTEC were consistent with previous studies, thus, this novel anomaly detection technique is a promising approach for the further work of the ionospheric disturbance prior 19 earthquake occurrence study. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Ionospheric electron density |
| General subdivision | Detection |
| -- | Technique |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Earthquake prediction |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Tripathi, Nitin Kumar, |
| Relator term | Chairperson |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Pal, Indrajit, |
| Relator term | Examination Committee |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Sarawut Ninssawat, |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Royal Thai Government, |
| Relator term | Scholarship Donor |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | AIT Fellowship, |
| Relator term | Scholarship Donor |
| 810 2# - SERIES ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Asian Institute of Technology. |
| Title of a work | Dissertation ; |
| Volume/sequential designation | no. RS-22-01 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B23584">http://203.159.5.9/ait-thesis/detail.php?q=B23584</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b12470624 |
| b | mnarc |
| c | a |
| 902 ## - LOCAL DATA ELEMENT B, LDB (RLIN) | |
| a | 260227 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 0 |
| Cataloger's initials, CIN (RLIN) | 260223 |
| First date, FD (RLIN) | m |
| -- | a |
| -- | a |
| -- | 0 |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 40-Archives |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 20-AIT Publication |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120422299 |
| CREATED | CREATED : 2026-01-15 |
| RECORD Id | RECORD # : i13566568 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
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| -- | IUSE3 : 0 |
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| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120421739 |
| CREATED | CREATED : 2026-01-26 |
| RECORD Id | RECORD # : i13568735 |
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| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120418073 |
| CREATED | CREATED : 2026-01-26 |
| RECORD Id | RECORD # : i13568747 |
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| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Total checkouts | Full call number | Barcode | Date last seen | Copy number | Price effective from | Koha item type | Cost, normal purchase price |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 17/08/2026 | AIT Diss. no.RS-22-01 | 30050120422299 | 17/08/2026 | 1 | 17/08/2026 | 40-Archives | |||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 17/08/2026 | AIT Diss. no.RS-22-01 | 30050120421739 | 17/08/2026 | 1 | 17/08/2026 | 20-AIT Publication | 50.00 | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 17/08/2026 | AIT Diss. no.RS-22-01 | 30050120418073 | 17/08/2026 | 2 | 17/08/2026 | 20-AIT Publication | 50.00 |