ゆっくりとした地震は,南カイの潜水地帯のダイップに沿ってリンクされています
Hitoshi Hirose1, Youichi Asano, Kazushige Obara
1National Research Institute for Earth Science and Disaster Prevention, 3-1 Tennodai, Tsukuba, Ibaraki 305-0006, Japan. hirose@bosai.go.jp
まとめ
日本のスロースリップイベント
科学分野:
- 地質物理学 地質物理学とは地質物理学です.
- 地震学 地震学とは
- テクトニクス (地質学) とは
背景:
- 遅い地震は,非常に低周波の地震や非火山の振動を含む,サブデュークションゾーンに沿って発生します.
- 日本南西部のナンカイメガストラスト破裂地帯は,地震活動で知られている地域です.
研究 の 目的:
- ゆっくりとした地震の異なるタイプの間の時間的な相関を調査する.
- メガスラストゾーンにおけるスロースリップイベントの空間的な範囲と影響を理解するために.
主な方法:
- 地震データを分析して,さまざまな種類のゆっくりとした地震を特定し,関連付けます.
- 緩やかな地震の分布をマッピングする. 潜水板の沈下に沿って.
主要な成果:
- 浅瀬の非常に低周波の地震とより深い非火山の震動の間に強い時間的相関が発見されました.
- これらのイベントは,長期にわたるスロースリップイベントの加速によって引き起こされました.
- 緩やかな滑りイベントは,潜水板の沈下に沿って100キロメートル以上に及ぶ.
結論:
- ゆっくりと滑る現象は,浅い地震と深いゆっくりとした地震の源地間の範囲に広がる可能性があります.
- スロースリップイベントは,隣接するナンカイメガスラストのストレス蓄積を調節することができます.
- この相互作用は,サブデュークションゾーンにおける地震破裂プロセスを理解するための意味を持つ.
関連する概念動画
Atomic Nuclei: Types of Nuclear Relaxation
Nuclear relaxation restores the equilibrium population imbalance and can occur via spin–lattice or spin–spin mechanisms, which are first-order exponential decay processes.
In spin–lattice or longitudinal relaxation, the excited spins exchange energy with the surrounding lattice as they return to the lower energy level. Among several mechanisms that contribute to spin–lattice relaxation, magnetic dipolar interactions are significant. Here, the excited nucleus transfers energy to a nearby...
In spin–lattice or longitudinal relaxation, the excited spins exchange energy with the surrounding lattice as they return to the lower energy level. Among several mechanisms that contribute to spin–lattice relaxation, magnetic dipolar interactions are significant. Here, the excited nucleus transfers energy to a nearby...
Nuclear Localization Signals and Import
Proteins targeted to the nucleus carry short stretches of amino acid sequences called the nuclear localization signal or NLS. Classical nuclear localization signals are of two types: monopartite and bipartite NLS. Monopartite classical NLS (cNLS) consists of a single cluster of 4-8 amino acids. Bipartite cNLS consists of two clusters of 2-3 amino acids and a 9-12 residue long proline-rich linker bridging the two clusters. Signal clusters are rich in positively charged amino acids such as...
Atomic Nuclei: Nuclear Relaxation Processes
In the absence of an external magnetic field, nuclear spin states are degenerate and randomly oriented. When a magnetic field is applied, the spins begin to precess and orient themselves along (lower energy) or against (higher energy) the direction of the field. At equilibrium, a slight excess population of spins exists in the lower energy state. Because the direction of the magnetic field is fixed as the z-axis, the precessing magnetic moments are randomly oriented around the z-axis. This...
Fault Types
When analyzing a single line-to-ground fault from phase A to ground at a three-phase bus, it is important to consider the fault impedance. This impedance is zero for a bolted fault, equal to the arc impedance for an arcing fault, and represents the total fault impedance for a transmission-line insulator flashover. To derive sequence and phase currents, fault conditions are translated from the phase domain to the sequence domain.
For line-to-line faults occurring between phases B and C, the...
For line-to-line faults occurring between phases B and C, the...
Destabilization of Microtubules
The destabilization of microtubules can occur during different stages of the microtubule lifecycle, such as nucleation or elongation. It can take place at either end of the microtubule or in the microtubule lattices as a whole. The lifespan of individual microtubules within a cell varies according to the cell type and stage of the cell cycle. During interphase, the lifespan of the microtubule is about 30 minutes, while during cell division, it is about 15 minutes. In axonal microtubules of...
Modes of Standing Waves - I
A close look at earthquakes provides evidence for the conditions appropriate for resonance, standing waves, and constructive and destructive interference. A building may vibrate for several seconds with a driving frequency matching the building's natural frequency of vibration; this produces a resonance that results in one building collapsing while the neighboring buildings do not. Often, buildings of a certain height are devastated, while other taller buildings remain intact. This phenomenon...

